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Cas Database

558-30-5

558-30-5

Identification

  • Product Name:Oxirane, 2,2-dimethyl-

  • CAS Number: 558-30-5

  • EINECS:209-193-8

  • Molecular Weight:72.1069

  • Molecular Formula: C4H8O

  • HS Code:29109000

  • Mol File:558-30-5.mol

Synonyms:Ethyleneoxide, a,a-dimethyl- (3CI);Propane, 1,2-epoxy-2-methyl-(6CI,8CI);1,1-Dimethylethylene oxide;1,2-Epoxy-2-methylpropane;1,2-Epoxyisobutane;1,2-Isobutylene oxide;2,2-Dimethyloxirane;2-Methyl-1,2-epoxypropane;2-Methyl-1-propene oxide;2-Methyl-1-propenoxide;2-Methylpropylene oxide;Isobutene oxide;Isobutylene epoxide;Isobutylene oxide;NSC 24249;

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Safety information and MSDS view more

  • Pictogram(s):FlammableF,IrritantXi,HarmfulXn

  • Hazard Codes:F,Xi,Xn,C

  • Signal Word:Danger

  • Hazard Statement:H225 Highly flammable liquid and vapourH314 Causes severe skin burns and eye damage H341 Suspected of causing genetic defects H351 Suspected of causing cancer

  • First-aid measures: General adviceConsult a physician. Show this safety data sheet to the doctor in attendance.If inhaled If breathed in, move person into fresh air. If not breathing, give artificial respiration. Consult a physician. In case of skin contact Wash off with soap and plenty of water. Consult a physician. In case of eye contact Rinse thoroughly with plenty of water for at least 15 minutes and consult a physician. If swallowed Never give anything by mouth to an unconscious person. Rinse mouth with water. Consult a physician.

  • Fire-fighting measures: Suitable extinguishing media Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide. Wear self-contained breathing apparatus for firefighting if necessary.

  • Accidental release measures: Use personal protective equipment. Avoid dust formation. Avoid breathing vapours, mist or gas. Ensure adequate ventilation. Evacuate personnel to safe areas. Avoid breathing dust. For personal protection see section 8. Prevent further leakage or spillage if safe to do so. Do not let product enter drains. Discharge into the environment must be avoided. Pick up and arrange disposal. Sweep up and shovel. Keep in suitable, closed containers for disposal.

  • Handling and storage: Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Avoid exposure - obtain special instructions before use.Provide appropriate exhaust ventilation at places where dust is formed. For precautions see section 2.2. Store in cool place. Keep container tightly closed in a dry and well-ventilated place.

  • Exposure controls/personal protection:Occupational Exposure limit valuesBiological limit values Handle in accordance with good industrial hygiene and safety practice. Wash hands before breaks and at the end of workday. Eye/face protection Safety glasses with side-shields conforming to EN166. Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU). Skin protection Wear impervious clothing. The type of protective equipment must be selected according to the concentration and amount of the dangerous substance at the specific workplace. Handle with gloves. Gloves must be inspected prior to use. Use proper glove removal technique(without touching glove's outer surface) to avoid skin contact with this product. Dispose of contaminated gloves after use in accordance with applicable laws and good laboratory practices. Wash and dry hands. The selected protective gloves have to satisfy the specifications of EU Directive 89/686/EEC and the standard EN 374 derived from it. Respiratory protection Wear dust mask when handling large quantities. Thermal hazards

Supplier and reference price

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  • Manufacture/Brand:TRC
  • Product Description:1,1-Dimethyloxirane
  • Packaging:100g
  • Price:$ 225
  • Delivery:In stock
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  • Manufacture/Brand:TCI Chemical
  • Product Description:Isobutylene Oxide >98.0%(GC)
  • Packaging:500mL
  • Price:$ 415
  • Delivery:In stock
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  • Manufacture/Brand:TCI Chemical
  • Product Description:Isobutylene Oxide >98.0%(GC)
  • Packaging:25mL
  • Price:$ 42
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  • Manufacture/Brand:SynQuest Laboratories
  • Product Description:1,2-Epoxy-2-methylpropane 96%
  • Packaging:100 g
  • Price:$ 55
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  • Manufacture/Brand:SynQuest Laboratories
  • Product Description:1,2-Epoxy-2-methylpropane 96%
  • Packaging:25 g
  • Price:$ 30
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  • Manufacture/Brand:SynQuest Laboratories
  • Product Description:1,2-Epoxy-2-methylpropane 96%
  • Packaging:5 g
  • Price:$ 20
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  • Manufacture/Brand:Sigma-Aldrich
  • Product Description:1,2-Epoxy-2-methylpropane 97%
  • Packaging:50g
  • Price:$ 336
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  • Manufacture/Brand:Sigma-Aldrich
  • Product Description:1,2-Epoxy-2-methylpropane 97%
  • Packaging:10g
  • Price:$ 96.8
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  • Manufacture/Brand:Oakwood
  • Product Description:Isobutylene Oxide
  • Packaging:500ml
  • Price:$ 210
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  • Manufacture/Brand:Oakwood
  • Product Description:Isobutylene Oxide 97%
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Relevant articles and documentsAll total 41 Articles be found

-

Sato,Cvetanovic

, p. 970,1668 (1958)

-

-

Richardson,Hodge

, p. 3996,4003 (1971)

-

Dioxirane epoxidations of 1,1-disubstituted ethylenes. Probing for radical pathways by computations and experiments

Liu,Houk,Dinoi,Fusco,Curci

, p. 8565 - 8569 (1998)

-

Comparison of isoelectronic 8-HO-G and 8-NH2-G derivatives in redox processes

Kaloudis, Panagiotis,D'Angelantonio, Mila,Guerra, Maurizio,Spadafora, Marie,Cismas, Crina,Gimisis, Thanasis,Mulazzani, Quinto G.,Chatgilialoglu, Chryssostomos

, p. 15895 - 15902 (2009)

8-Oxo-7,8-dihydroguanine (8-oxo-G) is the major lesion of oxidatively generated DNA damage. Despite two decades of intense study, several fundamental properties remain to be defined. Its isoelectronic 8-aminoguanine (8-NH 2-G) has also received considerable attention from a biological point of view, although its chemistry involving redox processes remains to be discovered. We investigated the one-electron oxidation and one-electron reduction reactions of 8-oxo-G and 8-NH2-G derivatives. The reactions of hydrated electrons (eaq-) and azide radicals (N 3?) with both derivatives were studied by pulse radiolysis techniques, and the transient absorption spectra were assigned to specific tautomers computationally by means of time-dependent DFT (TD-B3LYP/6-311G**//B1B95/6-31+G**) calculations. The protonated electron adducts of 8-NH2-G and 8-oxo-G showed a substantial difference in their absorption spectra, the unpaired electron being mainly delocalized in the imidazolyl ring and in the six-membered ring, respectively. On the other hand, the deprotonated forms of one-electron oxidation of 8-NH2-G and 8-oxo-G showed quite similar spectral characteristics. In a parallel study, the one-electron reduction of 8-azidoguanine (8-N3-G) afforded the same transient of one-electron oxidation of 8-NH2-G, which represents another example of generation of one-electron oxidized guanine derivatives under reducing conditions. Moreover, the fate of transient species was investigated by radiolytic methods coupled with product studies and allowed self- and cross-termination rate constants associated with these reactions to be estimated.

Method for epoxidizing small-molecular olefin

-

Paragraph 0180-0181; 0214-0215, (2021/06/06)

The invention relates to a micromolecular olefin epoxidation method, which is characterized by comprising the following steps: contacting micromolecular olefin, an organic peroxide and a titanium-silicon composite oxide under epoxidation reaction conditions of at least two reaction temperatures of A and B to obtain an alkylene oxide-containing product, wherein the A is 80-95 DEG C, the B is 100-120 DEG C, the titanium-silicon composite oxide is of an amorphous structure, is formed by aggregation of nano-particles and has mesopores in the range of 16-50 nm, the ratio of the volume of the mesopores to the total pore volume is larger than or equal to 80%, and the volume of the mesopores is larger than or equal to 0.5 cm/g. According to the method, the amorphous titanium-silicon-titanium-silicon composite oxide is taken as the catalyst, and at least two sections of conditions with different reaction temperatures are combined, so that compared with the prior art, the catalyst is stable in structure, low in cost, high in olefin epoxidation reaction activity and good in product selectivity.

PROCESS AND SYSTEM TO MAKE SUBSTITUTED LACTONES

-

Paragraph 0052; 0055, (2021/02/05)

A process for oxidizing iso-butane with oxygen to produce t-butyl hydroperoxide and t-butyl alcohol; dehydrating at least a portion of the t-butyl alcohol to produce di-tert-butyl ether and isobutylene; epoxidizing at least a portion of the isobutylene with the t-butyl hydroperoxide to produce isobutylene oxide and t-butyl alcohol; and carbonylating at least a portion of the isobutylene oxide with carbon monoxide to produce pivalolactone.

Method for synthesizing isovaleraldehyde

-

Paragraph 0033; 0035; 0038; 0040; 0043; 0045, (2020/12/05)

The invention provides a synthetic method of 3-methylcrotonaldehyde. The method comprises the following steps that epoxy isobutane is subjected to a hydroformylation reaction, hydroxy isovaleraldehydeis obtained, hydroxy isovaleraldehyde is subjected to an intramolecular dehydration reaction, and 3-methylcrotonaldehyde is obtained. The synthetic method of 3-methylcrotonaldehyde does not need harsh reaction conditions.

Rare earth metal compound, preparation method, composition, and method for catalyzing epoxidation of olefin

-

Paragraph 0078-0079, (2020/07/24)

The invention relates to a rare earth metal compound and application thereof in catalyzing epoxidation of olefin. The rare earth metal compound disclosed by the invention has a structure as shown in aformula E. The invention also relates to a preparation method of the rare earth metal compound and a composition containing the rare earth metal compound. The method is characterized in that a rare earth metal compound is added into the reaction, so that the dosage of a molybdenum catalyst can be reduced. Olefin and organic peroxide react under the action of a catalyst to generate epoxide, the organic peroxide is converted into corresponding alcohol, and the conversion rate of the organic peroxide is larger than 99%. After the reaction is finished, the rare earth metal compound can be separated and recycled. The method has the advantages of simple process, high catalytic system activity, effective reduction of the use amount of the catalyst while guaranteeing the catalytic efficiency, andcost saving.

PROCESS FOR PREPARING 3-HYDROXY-3-METHYLBUTYRATE (HMB) AND SALTS THEREOF

-

Page/Page column 8, (2020/10/31)

The present invention pertains to a process for preparing 3-hydroxy-3-methylbutyrate (HMB) or a salt thereof, the method comprising (a) reacting isobutylene oxide with cyanide in order to obtain 3- hydroxy-3-methylbutyronitrile, and (b) hydrolyzing the 3-hydroxy-3-methylbutyronitrile obtained in step (a) in order to obtain HMB, wherein hydrolysis step (b) is performed using either at least one nitrilase enzyme or, alternatively, using a combination of enzymes, said combination comprising at least one nitrile hydratase and at least one amidase.

Process route upstream and downstream products

Process route

2-methyl-1,2-epoxypropane
558-30-5

2-methyl-1,2-epoxypropane

1,2,4-trioxolane
289-14-5

1,2,4-trioxolane

3,3-dimethyl-1,2,4-trioxolane
22409-33-2

3,3-dimethyl-1,2,4-trioxolane

dimethylketene
598-26-5

dimethylketene

2-Methyl-1,2-propanediol
558-43-0

2-Methyl-1,2-propanediol

2-hydroxy-2-methylpropanal
20818-81-9

2-hydroxy-2-methylpropanal

Conditions
Conditions Yield
With ozone; for 0.00388889h; under 4.1 Torr; Product distribution; Mechanism; reaction in gas phase; mass spectrum of ozone and title compound;
azo-t-butane
15464-01-4

azo-t-butane

2-methyl-1,2-epoxypropane
558-30-5

2-methyl-1,2-epoxypropane

acetone
67-64-1

acetone

<i>tert</i>-butyl alcohol
75-65-0

tert-butyl alcohol

Conditions
Conditions Yield
With oxygen; In gas; at 119.9 ℃; for 0.5h; under 200 Torr; Product distribution; Irradiation; different time;
2,2-dimethyl-1,3-propanediol dinitrate
26482-65-5

2,2-dimethyl-1,3-propanediol dinitrate

2-methyl-1,2-epoxypropane
558-30-5

2-methyl-1,2-epoxypropane

Conditions
Conditions Yield
In tetralin; at 140 ℃; Mechanism; Kinetics; Ea, log A, other temperatures;
bis(triphenylphosphine)-t-butoxy(methyl)nickel
106828-39-1

bis(triphenylphosphine)-t-butoxy(methyl)nickel

2-methyl-1,2-epoxypropane
558-30-5

2-methyl-1,2-epoxypropane

2-methyl-but-2-ene
513-35-9

2-methyl-but-2-ene

Conditions
Conditions Yield
In toluene; at 50 ℃; for 12h; Further byproducts given;
81%
45%
21%
16%
In toluene; at 50 ℃; for 12h; Further byproducts given;
81 % Chromat.
16 % Chromat.
21 % Chromat.
45 % Chromat.
bis(triphenylphosphine)-t-butoxy(methyl)palladium
106828-10-8

bis(triphenylphosphine)-t-butoxy(methyl)palladium

2-methyl-1,2-epoxypropane
558-30-5

2-methyl-1,2-epoxypropane

2-methyl-but-2-ene
513-35-9

2-methyl-but-2-ene

Conditions
Conditions Yield
In toluene; 1.) -30 deg C, 2.) raising the temperature to 50 deg C;
94 % Chromat.
7 % Chromat.
4 % Chromat.
68 % Chromat.
C<sub>41</sub>H<sub>27</sub><sup>(2)</sup>H<sub>15</sub>NiOP<sub>2</sub>
106870-87-5

C41H27(2)H15NiOP2

2-methyl-1,2-epoxypropane
558-30-5

2-methyl-1,2-epoxypropane

methane-d3
676-80-2

methane-d3

methane
558-20-3

methane

Conditions
Conditions Yield
In (2)H8-toluene; at 50 ℃; Further byproducts given;
93 % Chromat.
7 % Chromat.
2-methyl-1,2-epoxypropane
558-30-5

2-methyl-1,2-epoxypropane

Conditions
Conditions Yield
With methyltrifluoromethyldioxirane; In various solvent(s); for 0.0333333h; other reagent: dimethyldioxirane;
99%
With tert.-butylhydroperoxide; molybdenum(V) chloride; In 1,2-dimethoxyethane; at 120 ℃; for 4h; under 3750.38 Torr; Reagent/catalyst; Temperature; Solvent; Pressure; Inert atmosphere;
90%
With DL-dithiothreitol; 1-phenylethyl hydroperoxide; C18H29Cl3NS3Y; molybdenum stearate; In ethylbenzene; at 150 ℃; for 3.5h; under 37503.8 Torr; Inert atmosphere;
89.6%
With 3-chloro-benzenecarboperoxoic acid; In 1,4-dioxane; at -10 ℃; for 2h;
49%
molybdenum; In toluene; for 1h; Yield given;
With peracetic acid; IP versus log k (rel); var. electrophiles;
With tert-butylperoxyl radical; In gas; at 119.9 ℃; Rate constant; Mechanism;
With nitrate radical; at 24.9 ℃; under 2.3 Torr; Rate constant;
With N-Bromosuccinimide; sulfuric acid; In water;
With 3,3-dimethyldioxirane; In acetone; at 0 ℃; Mechanism; Rate constant; Kinetics; energy data: ΔE(excit.), other substrate: α-methylstyrene, other reagent: methyl(trifluoromethyl)dioxirane, air presence or absence, other solvent: 1,1,1-trifluoropropanone, other temperature;
With 3-chloro-benzenecarboperoxoic acid;
With 3,3-dimethyldioxirane; In acetone; at -100 ℃;
With ozone; at 350 ℃; under 190.013 Torr;
With 3-chloro-benzenecarboperoxoic acid; In dichloromethane; at 0 - 20 ℃;
With 3-chloro-benzenecarboperoxoic acid; In dichloromethane; at 0 - 20 ℃; Inert atmosphere;
With dihydrogen peroxide; In methanol; water; at 40 ℃; for 2.5h; under 1500.15 Torr; Autoclave; Inert atmosphere;
With tert.-butylhydroperoxide; at 80 - 110 ℃; for 1.5h; under 3750.38 Torr;
3-chloro-2-methylpropan-2-ol
558-42-9

3-chloro-2-methylpropan-2-ol

2-methyl-1,2-epoxypropane
558-30-5

2-methyl-1,2-epoxypropane

Conditions
Conditions Yield
With potassium hydroxide; at -15 ℃; for 5h; under 500 Torr;
92%
With potassium hydroxide;
With sodium hydroxide; water;
With water; lead(II) oxide;
With silver(l) oxide;
With ammonium iron(III) sulfate; mercury(II) thiocyanate; In ethanol; at 30 ℃; pH=7.5; Kinetics; Enzymatic reaction;
butyraldehyde
123-72-8

butyraldehyde

isobutyraldehyde
78-84-2

isobutyraldehyde

2-methyl-1,2-epoxypropane
558-30-5

2-methyl-1,2-epoxypropane

Conditions
Conditions Yield
bis(acetylacetonato)cobalt(II); In chlorobenzene;
tert.-butylhydroperoxide
75-91-2

tert.-butylhydroperoxide

2-methyl-1,2-epoxypropane
558-30-5

2-methyl-1,2-epoxypropane

<i>tert</i>-butyl alcohol
75-65-0

tert-butyl alcohol

Conditions
Conditions Yield
at 30 - 200 ℃; under 772.577 - 77572.8 Torr;

Global suppliers and manufacturers

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  • Hangzhou Dingyan Chem Co., Ltd
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  • Amadis Chemical Co., Ltd.
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  • Shanghai Upbio Tech Co.,Ltd
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  • Chemwill Asia Co., Ltd.
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  • Afine Chemicals Limited
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