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115-11-7

Basic Information
CAS No.: 115-11-7
Name: 1-Propene, 2-methyl-
Molecular Structure:
Molecular Structure of 115-11-7 (1-Propene, 2-methyl-)
Formula: C4H8
Molecular Weight: 56.12
Synonyms: Propene,2-methyl- (8CI);1,1-Dimethylethene;1,1-Dimethylethylene;2-Methyl-1-propene;2-Methyl-2-propene;2-Methylpropene;2-Methylpropylene;Isobutene;Isopropylidenemethylene;i-Butene;iso-Butene;2-Methyl-1-propen;Isobutylene;
EINECS: 204-066-3
Density: 0.627 g/cm3
Melting Point: - 140 °C
Boiling Point: - 6.9 °C(lit.)
Flash Point: - 80 °C
Solubility: insoluble in water
Appearance: colorless flammable gas
Hazard Symbols: HighlyF+
Risk Codes: 12
Safety: 9-16-33
Transport Information: UN 1055 2.1
PSA: 0.00000
LogP: 1.58240
Synthetic route
75-65-0

tert-butyl alcohol

115-11-7

isobutene

Conditions
ConditionsYield
With air oxidized carbon nanotubes at 120℃; Kinetics; Reagent/catalyst; Temperature; Flow reactor; Inert atmosphere; chemoselective reaction;100%
With aminosulfonic acid In acetic anhydride at 80℃; for 0.5h; Dehydration;98%
niobium silicate at 250℃;98.9%
110-82-7

cyclohexane

80037-90-7

1,1,3,3-tetramethyl-2,3-dihydro-1H-isoindol-2-yloxoyl radical

37421-16-2

2-(t-butylazo)prop-2-yl hydroperoxide

A

89482-40-6

2-cyclohexyloxy-1,1,3,3-tetramethyl-2,3-dihydro-1H-isoindole

B

93524-81-3

2-tert-butoxy-1,1,3,3-tetramethylisoindoline

C

67-64-1

acetone

D

115-11-7

isobutene

Conditions
ConditionsYield
at 70℃; for 17h; Mechanism; Rate constant; Thermodynamic data; var. of nitroxide, solvent, temp., EA, ΔH(excit.), ΔS(excit.);A 96%
B 82%
C 100%
D 15%
71988-81-3

4-(bromomethylene)-2-(tert-butylthio)-1,3-dithiolylium bromide

A

71988-82-4

4-(bromomethylene)-1,3-dithiolane-2-thione

B

115-11-7

isobutene

Conditions
ConditionsYield
for 12h; Ambient temperature;A 100%
B n/a

2-(Di-tert-butylamino)-1,3-di-tert-butyl-2,4,4-dimethyl-1,3,2,4-diazaphosphasiletidinium-iodid

A

2-(tert-Butylamino)-1,3-di-tert-butyl-2,4,4-trimethyl-1,3,2,4-diazaphosphasiletidinium-iodid

B

115-11-7

isobutene

Conditions
ConditionsYield
In acetonitrile for 0.0833333h; Heating;A 100%
B n/a

2--1,3-di-tert-butyl-2,4,4-dimethyl-1,3,2,4-diazaphosphasiletidinium-iodid

A

2-(Trimethylsilylamino)-1,3-di-tert-butyl-2,4,4-trimethyl-1,3,2,4-diazaphosphasiletidinium-iodid

B

115-11-7

isobutene

Conditions
ConditionsYield
In acetonitrile for 0.0833333h; Heating;A 100%
B n/a

A

B

Conditions
ConditionsYield
With diisobutylaluminium hydride In pentane at 25℃; for 0.5h;A n/a
B 100%

Conditions
ConditionsYield
With 15-crown-5; cesium fluoride In 1,2-dimethoxyethane at -18 - 20℃; for 1h;100%

A

1-Methyl-2-cyclopenten-1-ol

1-Methyl-2-cyclopenten-1-ol

B

115-11-7

isobutene

Conditions
ConditionsYield
With Hoveyda-Grubbs catalyst second generation at 20℃; for 0.75h; Neat (no solvent); Inert atmosphere;A 100%
B n/a
With C35H46Cl2N2ORu In benzene-d6 at 60℃; Catalytic behavior; Reagent/catalyst; Sealed tube;
507-19-7

t-butyl bromide

13716-12-6

tri-tert-butyl phosphine

4,8,12-trioxatriangulenium tetrakis[3,5-bis(trifluoromethyl)phenyl]-borate

A

C19H9BrO3

B

115-11-7

isobutene

C

C32H12BF24(1-)*C12H27P*H(1+)

Conditions
ConditionsYield
In acetonitrile at 20℃;A 100%
B n/a
C 100%
1634-04-4

tert-butyl methyl ether

115-11-7

isobutene

Conditions
ConditionsYield
at 220℃; under 1200.12 Torr;99.95%
98.4%
shaped catalyst (68percent SiO2, 21percent Al2O3, 11percent MgO, 0.11percent Na2O) at 164 - 250℃; under 5250.53 Torr; for 4000h; Conversion of starting material;
128-38-1

4,4'-dihydroxy-3,3',5,5'-tetra-tert-butylbiphenyl

A

92-88-6

4,4'-Dihydroxybiphenyl

B

115-11-7

isobutene

Conditions
ConditionsYield
With methanesulfonic acid In isopar-G (hydrocarbons C10-C11); toluene at 150℃; for 2h;A 99%
B n/a

tris(1-pyrrolidinyl)(tert-butyl)phosphazide

A

tris(1-pyrrolidinyl)(amino)phosphonium tetrafluoroborate

B

115-11-7

isobutene

Conditions
ConditionsYield
With tetrafluoroboric acid In methanol; water at -78 - 20℃; for 2h;A 99%
B n/a
72030-06-9

3-acetoxyacetonyl tert-butyl trithiocarbonate

A

71988-79-9

4-(acetoxymethyl)-1,3-dithiole-2-thione

B

115-11-7

isobutene

Conditions
ConditionsYield
With toluene-4-sulfonic acid In acetic acid; trifluoroacetic acid 1. warming, 30 min; 2. heating, 30 min;A 98%
B n/a
80372-21-0

2-Amino-4-benzylamino-4,6,6-trimethyl-cyclohex-2-ene-1,1,3-tricarbonitrile

A

80372-33-4

3-Amino-4-[1-benzylamino-eth-(Z)-ylidene]-2-cyano-pent-2-enedinitrile

B

115-11-7

isobutene

Conditions
ConditionsYield
In xylene for 1h; Heating;A 98%
B n/a
17877-23-5

triisopropylsilanol

321887-70-1

(2-methylallyl )triisopropylsilane

A

hexaisopropyldisiloxane

B

115-11-7

isobutene

Conditions
ConditionsYield
With scandium tris(trifluoromethanesulfonate) In acetonitrile at 20℃; for 1h;A 98%
B n/a

C11H24O2

A

115-11-7

isobutene

B

504-63-2

trimethyleneglycol

Conditions
ConditionsYield
With A35 resin acid at 100℃; for 2h; Temperature; Reagent/catalyst;A n/a
B 98%
879-97-0

2,6-dimethyl-4-tert-butylphenol

A

576-26-1

2.6-dimethylphenol

B

115-11-7

isobutene

Conditions
ConditionsYield
aluminum oxide; nickel(II) sulphate In various solvent(s) at 305℃; Product distribution; fixed, quartz powder bed tubular reactor; gaseous phase in N2 flow; varied: temperature 280 to 330 deg C; N2 flow; quartz powder/catalyst ratio; residence time; substrates other alkylated phenols too;A 97.5%
B n/a
107-01-7

butene-2

115-11-7

isobutene

Conditions
ConditionsYield
at 450℃; under 1125.11 Torr; Reagent/catalyst; Pressure; Temperature; Inert atmosphere;97.4%
at 200 - 380℃; Umlagerung in Gegenwart verschiedener Katalysatoren;
61777-16-0

2-methylallyllithium

A

53721-69-0

1,3-dilithio-2-methylenepropane

B

115-11-7

isobutene

Conditions
ConditionsYield
at 135℃; for 24h; Yield given;A n/a
B 97%
17877-23-5

triisopropylsilanol

1351415-92-3

(2-methylallyl)-dimethylvinylsilane

A

1351415-84-3

1,1-dimethyl-3,3,3-triisopropyl-1-vinyldisiloxane

B

115-11-7

isobutene

Conditions
ConditionsYield
With scandium tris(trifluoromethanesulfonate) In acetonitrile at 20℃; for 1h;A 97%
B n/a
87513-88-0

dibutylbis(2-methylallyl)germane

C32H74O13Si8

A

di(n-butyl)germasilsesquioxane

B

115-11-7

isobutene

Conditions
ConditionsYield
With scandium tris(trifluoromethanesulfonate) In toluene at 20℃; for 2h;A 97%
B n/a
75-65-0

tert-butyl alcohol

A

78-83-1

2-methyl-propan-1-ol

B

7732-18-5

water

C

115-11-7

isobutene

Conditions
ConditionsYield
aluminum oxide at 315.546℃; under 11103.3 Torr;A 1.4%
B 1.1%
C 96.4%
78-83-1

2-methyl-propan-1-ol

115-11-7

isobutene

Conditions
ConditionsYield
BASF AL3996 at 300℃; under 760.051 Torr; Product distribution / selectivity;96%
With BASF A13996R at 325℃; Flow reactor;95%
at 340℃; under 780.078 Torr; Catalytic behavior; Temperature; Pressure; Reagent/catalyst; Inert atmosphere;94.35%
6731-23-3

triisobutylindium

A

7440-74-6

indium

B

115-11-7

isobutene

Conditions
ConditionsYield
In decalin byproducts: isobutane; pyrolysis in decalin under dry and deoxygenated N2 (140°C, 24 h); GLC anal. of org. products;A >99
B 96%

di(2-methylallyl)diethylgermane

C28H64O13Si8

A

C60H136GeO26Si16

B

115-11-7

isobutene

Conditions
ConditionsYield
With scandium tris(trifluoromethanesulfonate) In toluene at 20℃; for 2h;A 96%
B n/a
80372-13-0

1,3-Diamino-2,6,6-tricyan-3,5,5-trimethyl-cyclohex-1-en

A

80372-25-4

2,4-Diamino-1,1,3-tricyan-penta-1,3-dien

B

115-11-7

isobutene

Conditions
ConditionsYield
In decalin for 1h; Heating;A 95%
B n/a
80372-17-4

2-Amino-4,6,6-trimethyl-4-methylamino-cyclohex-2-ene-1,1,3-tricarbonitrile

A

80372-29-8

3-Amino-2-cyano-4-[1-methylamino-eth-(Z)-ylidene]-pent-2-enedinitrile

B

115-11-7

isobutene

Conditions
ConditionsYield
In xylene for 1h; Heating;A 95%
B n/a
15205-62-6

tri(tert-butyl)phosphite

79-10-7

acrylic acid

A

13086-84-5

di-tert-butyl phosphite

B

3-(di-tert-butoxyphosphoryl)propionic acid

C

115-11-7

isobutene

Conditions
ConditionsYield
In dichloromethane for 2h; Heating;A 95%
B n/a
C n/a
17477-97-3

1,1,1,5,5,5-hexamethyl-3-trimethylsiloxy-3-hydroxytrisiloxane

1351415-92-3

(2-methylallyl)-dimethylvinylsilane

A

1351415-83-2

1,1,1,5,5-pentamethyl-5-vinyl-3,3-bis(trimethylsiloxy)-trisiloxane

B

115-11-7

isobutene

Conditions
ConditionsYield
With scandium tris(trifluoromethanesulfonate) In acetonitrile at 20℃; for 1h;A 95%
B n/a
17877-23-5

triisopropylsilanol

37611-52-2

2-methyl a l l y l t r i s-(trimethylsiloxy)silane

A

1351415-86-5

1,1,1-trimethyl-5,5,5-triisopropyl-3,3-bis(trimethyl-siloxy)trisiloxane

B

115-11-7

isobutene

Conditions
ConditionsYield
With scandium tris(trifluoromethanesulfonate) In acetonitrile at 20℃; for 1h;A 95%
B n/a
95-65-8

3,4-Dimethylphenol

115-11-7

isobutene

1445-23-4

2-(1,1-dimethylethyl)-4,5-dimethylphenol

Conditions
ConditionsYield
With sulfuric acid at 65℃; under 1034.3 Torr; for 3h;100%
With sulfuric acid at 70℃;
sulfuric acid at 65℃; under 1520.1 Torr;
With sulfuric acid at 65 - 70℃; for 2h;114.1 g
57224-63-2

methyl (2S,3R)-2-(benzyloxycarbonylamino)-3-hydroxybutyrate

115-11-7

isobutene

52785-41-8

N-benzyloxycarbonyl-O-tert-butylthreonine methyl ester

Conditions
ConditionsYield
With sulfuric acid In dichloromethane at 0℃; for 48h;100%
With sulfuric acid In dichloromethane for 72h; Ambient temperature;75%
With sulfuric acid In dichloromethane
107-19-7

propargyl alcohol

115-11-7

isobutene

118616-26-5

1-Bromo-2-methyl-2-(2-propyn-1-yloxy)propane

Conditions
ConditionsYield
With N-Bromosuccinimide at 0℃; for 1h;100%
With N-Bromosuccinimide In dichloromethane 1.) -20 deg C, 2 h, 2.) r.t., 15 h;80%
67-56-1

methanol

91491-61-1

pyridine-2-selenenyl bromide

115-11-7

isobutene

96818-34-7

2-(2-Methoxy-2-methyl-propylselanyl)-pyridine

Conditions
ConditionsYield
at 25℃; for 2h;100%
29617-66-1

(S)-2-chloropropanoic acid

115-11-7

isobutene

101617-24-7

(S)-tert-butyl 2-chloropropanoate

Conditions
ConditionsYield
With hydrogen cation100%
With hydrogen cation93%
With sulfuric acid In dichloromethane at 20℃; for 48h;73%
10080-68-9

(E)-ethyl 4-hydroxybut-2-enoate

115-11-7

isobutene

124155-67-5

ethyl 4-tert-butoxycrotonate

Conditions
ConditionsYield
With sulfuric acid In dichloromethane for 36h; Ambient temperature;100%
51591-38-9

O,O′-diacetyl L-tartaric acid

115-11-7

isobutene

117384-47-1

O,O′-diacetyl di-tert-butyl L-tartrate

Conditions
ConditionsYield
With sulfuric acid In dichloromethane at -15 - 20℃; for 72h;100%
934-53-2

cumenyl chloride

115-11-7

isobutene

84803-23-6

(3-chloro-1,1,3-trimethylbutyl)benzene

Conditions
ConditionsYield
With 2,6-di-tert-butyl-pyridine; boron trichloride In various solvent(s) at -80℃; for 0.666667h;100%
zinc chloride diethyl ether In dichloromethane at -78℃; for 4h;71%
90830-69-6

(2R,3S)-2-Methoxymethoxy-3-((3S,8S,9S,10R,13S,14S,17R)-3-methoxymethoxy-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl)-butyraldehyde

115-11-7

isobutene

131434-15-6

(4R,5R,6S)-5-Methoxymethoxy-6-((3S,8S,9S,10R,13S,14S,17R)-3-methoxymethoxy-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl)-2-methyl-hept-1-en-4-ol

Conditions
ConditionsYield
With tin(IV) chloride In dichloromethane at -78℃; for 5h;100%
106544-20-1

2-oxo-3-(ethoxycarbonyl)-3,4-dihydro-β-carboline

115-11-7

isobutene

99708-07-3

2,2-dimethyl-5-(ethoxycarbonyl)-4,5,6,11b-tetrahydroisoxazolidino<2,3-a>-β-carboline

Conditions
ConditionsYield
In toluene at 120℃; under 750.06 - 6750.5 Torr; for 4h;100%
80399-40-2

(E)-4-Methyl-6-trimethylsilanyl-hex-4-enal

115-11-7

isobutene

80399-43-5

geranyltrimethylsilane

Conditions
ConditionsYield
With Wittig100%
58717-02-5

3-cyclohexyl-D-alanine

115-11-7

isobutene

193286-94-1

(R)-2-Amino-3-cyclohexyl-propionic acid tert-butyl ester

Conditions
ConditionsYield
With sulfuric acid In 1,4-dioxane100%
115-11-7

isobutene

polyisobutylene, Mn 5200, cationic polymerization

polyisobutylene, Mn 5200, cationic polymerization

Conditions
ConditionsYield
With Acetyl bromide; MeCOBr*2AlBr3 In dichloromethane at -78℃; for 0.333333h; Polymerization;100%
115-11-7

isobutene

polyisobutylene, Mn 41900, cationic polymerization

polyisobutylene, Mn 41900, cationic polymerization

Conditions
ConditionsYield
With aluminum tri-bromide; 2,4,6-Me3C6H2COBr*2AlBr3; Mesitoyl bromide In hexane at -78℃; for 0.333333h; Polymerization;100%
115-11-7

isobutene

polyisobutylene, Mn 132000, cationic polymerization

polyisobutylene, Mn 132000, cationic polymerization

Conditions
ConditionsYield
With Acetyl bromide; MeCOBr*2AlBr3; 2,3-dibromo-5,6-dicyano-1,4-benzoquinone In hexane at -78℃; for 0.333333h; Polymerization;100%
115-11-7

isobutene

64187-47-9

1-benzyloxycarbonyl-4-keto-L-proline

147489-27-8

(2S)-4-oxo-1-phenylmethoxycarbonylpyrrolidine-2-carboxylic acid tert-butyl ester

Conditions
ConditionsYield
With sulfuric acid In dichloromethane for 12h; Cooling with ice;100%
With sulfuric acid In dichloromethane at 20℃; for 16h;80%
With sulfuric acid In dichloromethane at 20℃; for 16h;80%
115-11-7

isobutene

polyisobutylene; monomer: isobutylene

polyisobutylene; monomer: isobutylene

Conditions
ConditionsYield
With tetrachloromethane; triisobutylaluminum; titanium tetrachloride In toluene at 30℃; Polymerization;100%
5876-92-6

2-hydroxyphenyl benzoate

115-11-7

isobutene

136864-81-8

2-tert-butoxyphenyl benzoate

Conditions
ConditionsYield
With trifluorormethanesulfonic acid In dichloromethane at -50 - -45℃; for 2.5h;100%
With trifluorormethanesulfonic acid70%
122213-92-7

7,7-diphenyl-6-heptenoic acid

115-11-7

isobutene

1038793-13-3

tert-butyl 7,7-diphenylhept-6-enoate

Conditions
ConditionsYield
With sulfuric acid In dichloromethane at 20℃;100%
115-11-7

isobutene

polyisobutylene, Mw 285000, Mw/Mn 2.4; monomer(s): isobutylene

polyisobutylene, Mw 285000, Mw/Mn 2.4; monomer(s): isobutylene

Conditions
ConditionsYield
With 1,2-C6F4(B(C(C6F5)2)2 In hexane at -78℃; for 1h;100%
115-11-7

isobutene

polyisobutylene, Mw 195000, Mw/Mn 3.2; monomer(s): isobutylene

polyisobutylene, Mw 195000, Mw/Mn 3.2; monomer(s): isobutylene

Conditions
ConditionsYield
With 1,2-C6F4(B(C(C6F5)2)2 In hexane at -78℃; for 1h;100%
115-11-7

isobutene

polyisobutylene, Mw 132000, Mw/Mn 5.7; monomer(s): isobutylene

polyisobutylene, Mw 132000, Mw/Mn 5.7; monomer(s): isobutylene

Conditions
ConditionsYield
With 1,2-C6F4(B(C(C6F5)2)2 In hexane at -78℃; for 1h;100%
115-11-7

isobutene

polyisobutylene, Mw 140000, Mw/Mn 3.8; monomer(s): isobutylene

polyisobutylene, Mw 140000, Mw/Mn 3.8; monomer(s): isobutylene

Conditions
ConditionsYield
With 1,2-C6F4(B(C(C6F5)2)2 In hexane at -78℃; for 1h;100%
115-11-7

isobutene

polyisobutylene, Mw 257000, Mw/Mn 2.0; monomer(s): isobutylene

polyisobutylene, Mw 257000, Mw/Mn 2.0; monomer(s): isobutylene

Conditions
ConditionsYield
With 1,2-C6F4(B(C(C6F5)2)2 In hexane at -78℃; for 1h;100%
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    Isobutylene

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    Isobutylene

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0/

    Chemwill Asia co.,Ltd is one of the leading manufacturer in CHINA.Our main production base is located in Xuzhou industry park. We produce a wide range of organics including Active pharmaceutical ingredients(APIs), Veterinary, Indole derivatives, Aro

    Our main production base is located in Xuzhou industry park. We produce a wide range of organics including Fine chemicals, Active pharmaceutical ingredients(APIs), Veterinary, In

  •  Chemwill Asia Co., Ltd.

     China (Mainland)  |  Contact Details

    Business Type:Manufacturers

    Tel:021-51086038

    Address:High-Tech Industrial park,Chemical Economical Development Zone,Xuzhou, Jiangsu-Province, P.R.China

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  • Isobutylene

  • Casno:

    115-11-7

    Isobutylene

    Min.Order: 1 Kilogram

    FOB Price:  USD $ 0.0-0.0/Kilogram

    Our company was built in 2009 with an ISO certificate.In the past 5 years, we have grown up as a famous fine chemicals supplier in China and we had established stable business relationships with Samsung,LG,Merck,Thermo Fisher Scientific and so on.O

    Our company engages in Electronic chemicals such as OLED,Photoresist chemical,Electrolyte additive and Intermediate Pharmaceutical production; development of noble metal catalysts,

  •  Henan Tianfu Chemical Co., Ltd.

     China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:86-371-55170693/55170694

    Address:Zhengzhou International Trade New Territory,Jinshui District,Zhengzhou ,China

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  • 99% Purity.CAS115-11-7

  • Casno:

    115-11-7

    99% Purity.CAS115-11-7

    Min.Order: 1 Kilogram

    FOB Price:  USD $ 651.0-869.0/Kilogram

    Our company has been in existence for 10 years since its establishment. We have our own unique team. The company integrates independent research and development, production and sales. We have established famous brands at home and abroad. At present

    Baoji Guokang Healthchem co.,ltd located in Baoji High-tech Zone,is epitomizing international,cooperative and honest.We are a young company full of action and energy,and our profes

  •  Baoji Guokang Healthchem co.,ltd

     China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:86-917-3909592

    Address:China

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  • hot sale Isobutylene CAS No:115-11-7 99.9% purity

  • Casno:

    115-11-7

    hot sale Isobutylene CAS No:115-11-7 99.9% purity

    Min.Order: 10 Gram

    FOB Price:  USD $ 0.0-0.0/Gram

    1.high quality: quality is life. quality is the most important element for all goods. we have a lab doing research in wuhan china. hplc and nmr is available if needed. 2.reasonable price: we provide high quality products with competi

    WUHAN WONDA PHARMACEUTICAL AND CHEMICAL LIMITED is specializing in custom synthesis, manufacture and import & export of nootropics, herbal extract, OLED etc. Wuhan Wonda Pharm & Ch

  •  Wuhan Wonda Pharm Limited

    China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:027-84306245

    Address:Wuhan Private Science and Technology Park , Wuhan, China

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  • Isobutylene CAS NO.115-11-7

  • Casno:

    115-11-7

    Isobutylene CAS NO.115-11-7

    Min.Order: 10 Gram

    FOB Price:  USD $ 0.0-0.0/Gram

    Our Advantage: 1. Quality & Price We offer high quality and reasonably priced products to our customers 2. Payment Methord T/T, L/C, Paypal, MoneyGram, Westerm Union, other 3. Service: Best service and after-sales service

    We, Jilin Tely Imp & Exp Co., Ltd. mainly supply and export products including: pharmaceutical raw materials,Chemical reagents, Food additives, pharmaceutical and pesticide interme

  •  Jilin Tely Imp.& Exp.Co., Ltd.

     China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:86-431-81915458

    Address:Room 302, 47 Changping Street, Chaoyang District, Changchun, Jilin Province,China

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  • High quality 1-Propene, 2-methyl- Cas115-11-7 with favorable price and good service

  • Casno:

    115-11-7

    High quality 1-Propene, 2-methyl- Cas115-11-7 with favorable price and good service

    Min.Order: 1 Kilogram

    FOB Price:  USD $ 100.0-150.0/Kilogram

    Our company: Wuhan Monad Medicine Tech Co.,LTD is a research and development, production, sales in one high-tech company, own about 100 kinds of products, can provide about more than 30000 kinds of products.

    Wuhan Monad Medicine Tech Co.,LTD is a research and development, production, sales in one high-tech company, own about 100 kinds of products, can provide about more than 30000 kind

  •  Wuhan Monad Medicine Tech Co.,LTD

     China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:+8613397160123

    Address:13th Floor, Tower B, Century Plaza, Zhongnan Road, Wuchang District, Wuhan, China.

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  • Isobutene CAS NO.115-11-7 \

  • Casno:

    115-11-7

    Isobutene CAS NO.115-11-7 \

    Min.Order: 1 Metric Ton

    FOB Price:  USD $ 1.0-7.0/Metric Ton

    our company hebei chemin biological technology co.,ltd is a professional chemical raw materials manufacturer and exporter for many years in chemical market. there are more than 200 excellent staffs and four factories working for us . company adva

    CUSTOMIZED LAB Chemtn Biological Technology Limited is one of the leading RC chemicals producer in china,we have advanced equipment and high technology,

  •  Chemtn Biological Technology Limited

    China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:+8615630194059

    Address:LB BLDG,Qiaoxi district,Shijiazhuang,china

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  • Isobutene

  • Casno:

    115-11-7

    Isobutene

    Min.Order: 1 Kilogram

    FOB Price:  USD $ 1550.0-1600.0/Kilogram

    1.Coreychem focus on high complex new type intermediates and fine chemical custom synthesis,scale-up production and rare chemicals trade.Product category including Intermediates&API,Catalyst and Electronic Chemicals.Covering 811 square meters R

    Henan CoreyChem Co., Ltd, based on the original Zhengzhou Cote Chemical Research Institute, be brave in absorbing highly educated talents & overseas returnees; actively responded t

  •  Career Henan Chemical Co

     China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:+86-371-86658258

    Address:Building 3 of Innovation Park, East District of the National University Science Park

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  • 1-Propene, 2-methyl-

  • Casno:

    115-11-7

    1-Propene, 2-methyl-

    Min.Order: 0 Metric Ton

    FOB Price:  USD $ 0.0-0.0/Metric Ton

    Hello, dear friend! I'm Hansen and Allen from China. Welcome to my lookchem mall! The following is a brief introduction of our company's products and services. If you are interested in our products, please contact us by email in t

    Shandong Hanjiang Chemical Co., Ltd. is located in Qilu Petrochemical Industrial Park, Zibo City, Shandong Province, involving pesticide, medicine, chemical industry, coating, dy

  •  Shandong Hanjiang Chemical Co., Ltd.

     China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:18369939125

    Address:95A, Xingyuan East Road, Zhangdian District

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  • Isobutylene

  • Casno:

    115-11-7

    Isobutylene

    Min.Order: 1 Kilogram

    FOB Price:  USD $ 100.0-100.0/Kilogram

    HangYu Chemical is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality pharmaceuticals, intermediates, special chemicals and OLED intermediates and other fine chemicals. HangYu Chemical consis

    Zibo HangYu Chemical is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality pharmaceuticals, intermediates, special chemicals

  •  Zibo Hangyu Import&Export Co., Ltd

    China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:86-15988566987

    Address:Room1701, Tianxing Building,Licheng district, jinan, Shandong, China

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  • High Quality ISOBUTYLENE

  • Casno:

    115-11-7

    High Quality ISOBUTYLENE

    Min.Order: 1 Gram

    FOB Price:  USD $ 1.0-1.0/Gram

    Qingdao Sigma Chemical Ltd is is a global chemical industry manufacturers and suppliers of pharmaceuticals and intermediates, peptide,Nootropis etc API, food and feed additives, herbal extracts, agrochemicals and fine chemicals etc. Our Labo

    SHANDONG SIGMACHEMICAL is mainly engaged in R&D, manufacturing and marketing pharmaceuticals, chemical intermediates, Biochemicals, Veterinary medicines and Nutrition products. Wit

  •  Qingdao Sigma Chemical Co., Ltd.

     China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:0532-80916960

    Address:shandong qingdao

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  • ISOBUTYLENE

  • Casno:

    115-11-7

    ISOBUTYLENE

    Min.Order: 1 Kilogram

    FOB Price:  USD $ 0.0-0.0/Kilogram

    Superior quality Appearance:colourless gas Storage:Stored in cool, dry and ventilation place; Away from fire and heat Package:1kg/bag, 1kg/drum or 25kg/drum or as per your request. Application:used in the production of isooctane, a high octane avia

    Hangzhou Yunuo Chemical Co., Ltd. is located in Hangzhou City, China We are specialized in fine chemicals and basic chemical auxiliary materials, Organic compounds, rubber

  •  HANGZHOU YUNUO CHEMICAL CO.,LTD

    China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:0571-83715115

    Address:hangzhou

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  • IsobutyleneCAS NO.: 115-11-7

  • Casno:

    115-11-7

    IsobutyleneCAS NO.: 115-11-7

    Min.Order: 1 Gram

    FOB Price:  USD $ 2.0-2.0/Gram

    We are leading fine chemicals supplier in China with ISO certificate, Our main business covers the fields below: 1.Noble Metal Catalysts (Pt.Pd...) 2.Organic Phosphine Ligands (Tert-butyl-phosphine.Cyclohexyl-phosphine...) 3.OLED

    The company is Located in Zhengzhou High-tech Development Zone with import and export license, We passed ISO 9001:2008 as well, Henan Wentao has developed more than 1000 compounds,

  •  Henan Wentao Chemical Product Co., Ltd.

     China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:+86-370-2722992

    Address:32 Room, 5th Floor, Building 11, No. 6 Yinxing Road, High-tech Industrial Development Zone, Zhengzhou City, Henan Province

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  • Factory Supply 2-methylpropene

  • Casno:

    115-11-7

    Factory Supply 2-methylpropene

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0/

    Ality Holding Group Limited, established in 2007, is a comprehensive Chemical Supply Group with Patent Technology as its core. Ality Group operates branches in Hong Kong, Singapore and mainland China, including production bases in Shandong, Zhejiang

    Ality Group, established in 2007, is a comprehensive Chemical Supply Group with Patent Technology as its core. Ality Group operates branches in Hong Kong, Singapore and mainland Ch

  •  Ality Chemical Corporation

     China (Mainland)  |  Contact Details

    Business Type:Other

    Tel:0513-87616220

    Address:Fine chemical industry park, Nantong,Jiangsu

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  • ISOBUTYLENE

  • Casno:

    115-11-7

    ISOBUTYLENE

    Min.Order: 1 Kilogram

    FOB Price:  USD $ 0.0-0.0/Kilogram

    1, High quality with competitive price: 2, Fast and safe delivery 3.Excellent pre-sales and after-sales service 4. Well-trained and professional technologist and sales with rich experience in the field Appearance:see detailed specifications Sto

    Hangzhou Clap Technology Co., Ltd is a leading manufacturer and supplier of API, Pharma intermediates, organic and inorganic compounds, rare earth, pesticide, raw drugs, fine chemi

  •  HANGZHOU CLAP TECHNOLOGY CO,.LTD

     China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:86-571-56972507

    Address:Room 4198,Floor 4,No.4,ShanXian Road XiaCheng District,HangZhou city,ZheJiang province,China

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  • 1-Propene, 2-methyl-

  • Casno:

    115-11-7

    1-Propene, 2-methyl-

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0/

    Appearance:95%+ Package:R&D,Pilot run Transportation:per client require Port:Express ,Air, Sea

    Hunan chemfish Pharmaceutical co.,Ltd.located in Lugu High-tech industral park ,Hunan province . with its own R&D center and more than 10000㎡manufacture plant . Chemfish owns

  •  Hunan chemfish Pharmaceutical co.,Ltd

     China (Mainland)  |  Contact Details

    Business Type:Manufacturers

    Tel:0731-85567275

    Address:No.10048, xiangjiang centry bulding ,kaifu district ,changsha city ,Hunan

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  • ISOBUTYLENE

  • Casno:

    115-11-7

    ISOBUTYLENE

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0/

    U-CHEMO is a high-tech enterprise taking pharmaceutical intermediates and fine chemicals as main products. We pay high attention on product quality and apply quality management in the whole manufacturing process from research to production. In additi

    Our company specializes in chemical products, including pharmaceutical intermediates, active pharmaceutical ingredients etc. High quality! High pur

  •  U-Chemo Holding Co.,Limited

    China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:+86-21-61558312

    Address:Dong Fang Road,

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  • Isobutene

  • Casno:

    115-11-7

    Isobutene

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0/

    high purity lowest priceAppearance:solid or liquid Storage:in sealed air resistant place Package:drum and bag Application:for pharma use Transportation:by sea or air Port:Beijing or Guangzhou

    Kono Chem Co.,Ltd is a leading producer of standardized herbal extracts, natural active ingredients and APIs for pharmaceutical, health food and cosmetic industries. Annually, mo

  •  Kono Chem Co.,Ltd

     China (Mainland)  |  Contact Details

    Business Type:Other

    Tel:86-29-86107037-8015

    Address:No.11 Daqing Road,Lianhu District,Xi’an 710082,China

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  • 2-Methylpropene

  • Casno:

    115-11-7

    2-Methylpropene

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0/

    high purity,in stock Package:25kg/drum,or as per customers'demand Application:API,Pharmaceutical intermediates Transportation:air,sea,courier

    GIHI CHEMICALS CO.,LIMITED, its former company is a small manufacturer who is specialized in the production of ester products which are used in the daily chemicals ,cosmetic produc

  •  GIHI CHEMICALS CO.,LIMITED

     China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:571-86217390

    Address:Huacai International Building,Sandun,Westlake District,Hangzhou 310030,Zhejiang,China

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  • Isobutylene

  • Casno:

    115-11-7

    Isobutylene

    Min.Order: 100 Gram

    FOB Price:  USD $ 0.0-0.0/Gram

    Jinhua huayi chemical co., ltd. is dedicated to the development, production and marketing of chemicals. On the basis of equality and mutual benefit, and under the principle of customer first, credit first, quality first, we are ready to join hands

    Jinhua huayi chemical co., ltd. has own manufacturers which focus on production of organic specialty products,Pharmaceuticals and its intermediates,fine chemcals of high purity.The

  •  JINHUA HUAYI CHEMICAL CO., LTD.

     China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:86-579-82660891

    Address:47-204 No.288, Shida St., Wuchem Dist., Jinhua,Zhejiang, 321004 China

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  • 1-Propene, 2-methyl-

  • Casno:

    115-11-7

    1-Propene, 2-methyl-

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0/

    R & D enterprises have their own stock in stock Package:1kg Application:pharmaceutical intermediates

    Hangzhou Dingyan Chem Co., LTD. is located in the beautiful tourist city of hangzhou, is a comprehensive chemical enterprice which doing import and export business by its own comp

  •  Hangzhou Dingyan Chem Co., Ltd

     China (Mainland)  |  Contact Details

    Business Type:Manufacturers

    Tel:86-571-86465881,86-571-87157530,86-571-88025800

    Address:RM.1118,NO.1 Building, Baiyun Tower,Jianggan Area, Hangzhou city, China,310004

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  • Isobutene

  • Casno:

    115-11-7

    Isobutene

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0/

    Our clients, like BASF,CHEMO,Brenntag,ASR,Evonik,Merck and etc.Appearance:COA Storage:in stock Application:MSDS/TDS

    Xiamen Aeco Chemical Industrial Co., Ltd(same as Aecochem Corp.) An ISO 9001:2015 Certified Company Your Partner in China, a Professional chemical raw material supplier, our

  •  Aecochem Corp.

     China (Mainland)  |  Contact Details

    Business Type:Manufacturers

    Tel:+86-592 599 8717

    Address:No 611 Sishui Road,Huli

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  • ISOBUTYLENE

  • Casno:

    115-11-7

    ISOBUTYLENE

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0/

    high quality Storage:Sealed, dry, microtherm , avoid light and smell. Package:According to the demand of customer Application:Organic synthesis Transportation:by air or by sea

    Located in Zhengdong New District,?Zhengzhou of Henan province, Henan Allgreen Chemical Co.,Ltd is a comprehensive high-tech modern enterprises integrating professional R&D, pro

  •  Henan Allgreen Chemical Co.,Ltd

     China (Mainland)  |  Contact Details

    Business Type:Manufacturers

    Tel:+86-0371-87507775

    Address:No 260 Dongming Road,Jinshui District

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  • Isobutylene

  • Casno:

    115-11-7

    Isobutylene

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0/

    ≥99%, stockAppearance:colourless gas Application:OLED Transportation:by air, by sea

    We are specialized in manufacturing Organic Optoelectronic Chemicals, especially for OLED (Organic Light Emitting Diode) and OPC (Organic Photo Conductor) materials, Pharmaceutical

  •  Springchem New Material Technology Co.,Limited

    China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:86-21-51752791, 51752788

    Address:Suite A101, No. 751, Yichang Road, Shanghai China. (200060)

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  • Isobutene

  • Casno:

    115-11-7

    Isobutene

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0/

    Known for its best quality and competitve price, this chemicals we offered is widely appreciated by our customers. Our advantages:1, High quality with competitive price:1) Standard:BP/USP/EP/Enterprise standard2) All Purity≥99%3) We are manufacturer

    Shaanxi Mingqi Chemical Co., Ltd is committed to the development of import and export trade in the production, operation and plant extracts of pharmaceutical raw materials and inte

  •  Shaanxi Mingqi Chemical Co., Ltd

     China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:18092428356

    Address:Weiyang District

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  • factory supply CAS  115-11-7 with competitive price

  • Casno:

    115-11-7

    factory supply CAS 115-11-7 with competitive price

    Min.Order: 1 Kilogram

    FOB Price:  USD $ 112.0-112.0/Kilogram

    Product Description Description & Specification Category Pharmaceutical Raw Materials, Fine Chemicals, Bulk drug Standard Medical standard

    Zhuo Zhou Wen Xi Import and Export Co., Ltd. is a company mainly engaged in the export of pharmaceutical raw materials. Its parent company is (Wen Xi Pharma), including three subs

  •  Zhuozhou Wenxi import and Export Co., Ltd

     China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:+86-13111626072

    Address:Room 1710, Baoxin International Phase I, 19 Guanyun East Road, Zhuozhou, Hebei

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  • Isobutene

  • Casno:

    115-11-7

    Isobutene

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0/

    Shanghai, Run-Biotech Co., Ltd is a leading domestic pharmaceutical, biopharmaceutical, and health care products R & D outsourcing services company. As an innovation-driven and customer-focused company, Run Biotech provides a broad and integrated por

    Dine products include organic reagents, inorganic reagents and biochemical reagents, including pharmaceutical intermediates, bulk drugs, catalysts, high purity solvents, specialty

  •  Shanghai Run-Biotech Co., Ltd.

     China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:+86-21-57171705 / 57171706

    Address:No.787, Kangqiao Road, Pudong New District, Shanghai, China

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  • 1-Propene, 2-methyl-

  • Casno:

    115-11-7

    1-Propene, 2-methyl-

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0/

    Ansciep Chemical is a professional enterprise manufacturing and distributing fine chemicals and speciality chemicals. We have been dedicated to heterocycle compounds and phenyl rings for tens of years. This is our mature product for export. Our quali

    Antimex Chemical Limied, was founded in 2001, we are specializing in manufacturing & researching of Active pharmaceutical Ingredients,Veterinary pharm APIs,cosmetic ingredients,and

  •  Antimex Chemical Limied

    China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:0086-21-50563169

    Address:Room1027,No.Jinyu Road,Pudong

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  • Isobutene

  • Casno:

    115-11-7

    Isobutene

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0/

    IsobuteneAppearance:solid or liquid Storage:in sealed air resistant place Package:drum and bag Application:for pharma use Transportation:by sea or air

    Our company( GZ HONCH CHEMICAL TECHNOLOGY CO.,LTD) was founded in March 27, 2007,The former name of GZ HONCH CHEMICAL TECHNOLOGY CO.,LTD are GZ yuebao tang chemical co.,ltd an

  •  GZ HONCH CHEMICAL TECHNOLOGY CO.,LTD

     China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:86-020-15322315498

    Address:NO.53,YONGTAI ROAD BAIYU District Guangzhou

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  • TIANFUCHEM--High purity 115-11-7 ISOBUTYLENE

  • Casno:

    115-11-7

    TIANFUCHEM--High purity 115-11-7 ISOBUTYLENE

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0/

    TIANFUCHEM--High purity 115-11-7 ISOBUTYLENE Application:TIANFUCHEM--High purity 115-11-7 ISOBUTYLENE

    Hubei Xinrunde Chemical Co., Ltd. dedicated to the development, production and marketing of chemicals which is specialized in Organic compounds; Active Pharmaceutical Ingredient(s)

  •  Hubei XinRunde Chemical Co., Ltd

     China (Mainland)  |  Contact Details

    Business Type:Other

    Tel:+8615102730682

    Address:No.43, Xinandu Industrial Park, East and West Lake District, Wuhan, Hubei, China

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  • Isobutene

  • Casno:

    115-11-7

    Isobutene

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0/

    Amoychem is committed to providing the top-quality chemical products and services Internationally. We offer our customers with friendly, professional service and reliable, high performance products that have been manufactured according to the accredi

    Amoychem integrates the sourcing ,marketing and support of the entire range of top-quality chemical products. We provide our customers with professional service and high performan

  •  AmoyChem Co.,Ltd

     China (Mainland)  |  Contact Details

    Business Type:Other

    Tel:+86 592 605 1114

    Address:Factory 2/F, NO. 206 Weili Road

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  • 1-Propene, 2-methyl-

  • Casno:

    115-11-7

    1-Propene, 2-methyl-

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0/

    Comply with CP,JP,EP,US GradeAppearance:White Solid Storage:Stored under room temperature in cool and dry place Package:In 25KG paper or plastic drums Application:Used as pharmaceutical Intermeidate Transportation:Shipped as non- dangerous chemicals

    Who we are ? Located in Zhengzhou City, China , Henan Daken Chemical Co.,Ltd was Established in June ,1983.We have a 35 years history for fine chemical synthesis .Daken has young

  •  Henan DaKen Chemical CO.,LTD.

     China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:+86-371-55541817

    Address:No.56 Hongzhuan Road,Jinshui,Zhengzhou,450000,China

       Inquiry Now

  • 1-Propene, 2-methyl-

  • Casno:

    115-11-7

    1-Propene, 2-methyl-

    Min.Order: 0

    FOB Price:  USD $ 0.0-0.0/

    low price and good quality Application:It is an important raw material and intermediate used in Organic Synthesis, Pharmaceuticals, Agrochemicals and D

    Shanghai Yanchu Chemicals is dedicated to providing fine chemicals, building blocks and electronic chemcials with strictly quality contol . We have well equipped labs to provid

  •  Shanghai Yanchu chemicals Co., Ltd

    China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:0086 18601657701

    Address:Room 1292, Building NO. 2, Lane 65, Huandong 1st Rd, Fengjing Town, Jinshan Distriction, shanghai

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DOT Classification:  2.1; Label: Flammable Gas

Specification

The Isobutene, with the CAS registry number 115-11-7 and EINECS registry number 204-066-3, has the systematic name and IUPAC name of 2-methylprop-1-ene. It is a kind of colorless gas at standard temperature and pressure, and belongs to the following product categories: Gas Cylinders; Hydrocarbons (Low Boiling point); Synthetic Organic Chemistry. And the molecular formula of this chemical is C4H8.You should be cautious while dealing with Isobutylene. It is a kind of extremely flammable chemicalirritates eyes, respiratory system and skin. Therefore, you had better take the following instructions: Keep container in a well-ventilated place; Keep away from sources of ignition - No smoking; Take precautionary measures against static discharges.
 
The physical properties of Isobutene are as followings:
(1)ACD/LogP: 2.25; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 2.246; (4)ACD/LogD (pH 7.4): 2.246; (5)ACD/BCF (pH 5.5): 29.979; (6)ACD/BCF (pH 7.4): 29.979; (7)ACD/KOC (pH 5.5): 396.941; (8)ACD/KOC (pH 7.4): 396.941; (9)#H bond acceptors: 0; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 0; (12)Polar Surface Area: 0 Å2; (13)Index of Refraction: 1.368; (14)Molar Refractivity: 20.148 cm3; (15)Molar Volume: 89.457 cm3; (16)Polarizability: 7.987×10-24cm3; (17)Surface Tension: 15.147 dyne/cm; (18)Density: 0.627 g/cm3; (19)Enthalpy of Vaporization: 23.496 kJ/mol; (20)Boiling Point: °C at 760 mmHg; (21)Vapour Pressure: 2143.214 mmHg at 25°C.

Preparation of Isobutene:
 It can be isolated from refinery streams by reaction with sulfuric acid. But in industial, it is commonly produced by catalytic dehydrogenation of isobutane.

Uses of Isobutene:
It is usually used as an intermediate in the production of a variety of products, such as gasoline oxygenates methyl tert-butyl ether (MTBE) and ethyl tert-butyl ether (ETBE), fuel additive isooctane, methacrolein, butyl rubber, and antioxidants butylated hydroxytoluene (BHT) and butylated hydroxyanisole (BHA). 
 
You can still convert the following datas into molecular structure:
(1)SMILES: CC(=C)C
(2)InChI: InChI=1/C4H8/c1-4(2)3/h1H2,2-3H3
(3)InChIKey: VQTUBCCKSQIDNK-UHFFFAOYAW

The toxicity data of Isobutylene is as follows:

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LC50 inhalation 415gm/m3/2H (415000mg/m3)   Farmakologiya i Toksikologiya Vol. 30, Pg. 102, 1967.
rat LC50 inhalation 620gm/m3/4H (620000mg/m3)   Farmakologiya i Toksikologiya Vol. 30, Pg. 102, 1967.