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140-93-2

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140-93-2 Usage

Chemical Properties

Light-yellow crystals. Soluble in water. Deliquescent, decomposes 150C.

Uses

Different sources of media describe the Uses of 140-93-2 differently. You can refer to the following data:
1. Proxan Sodium is used in preparation method of Silica with low heavy metal content and high adsorbability, and its application as carrier of liquid animal nutrition agent of feed additive. used as an herbicide, fortifying agent for certain oils, and flotation reagent for base and precious metal ores; Used as a rubber curing agent and antioxidant, pesticide and fungicide, and high-pressure lubricant additive; Also used for analytical procedures, for froth flotation in soils contaminated with mercury, and in the past as an intermediate for saccharin.
2. Control of annual weeds in bean and pea fields.

Application

Sodium isopropyl xanthate is used as a collector for sulphide minerals in alkaline flotation circuits. Use in acid circuits will lead to the decomposition of the product. It is widely used for copper, it is effective in native metal flotation, and is widely used in precious metal flotation and the selective flotation of polymetallic base metals. Sodium isopropyl xanthate can be used as a collector for oxide minerals of base metals which have previously been treated by sulphidisation. Sodium isopropyl xanthate can be used in either rougher or scavenger flotation.

Hazard

Moderate fire risk. Irritant to skin and mucous membranes.

Flammability and Explosibility

Flammable

Purification Methods

It crystallises from ligroin/ethanol.

Dosage

Dosage rates of sodium isopropyl xanthate vary from 15 to 150g/t of ore. Sodium isopropyl xanthate is normally added to the pulp before flotation as an aqueous solution of between 3 and 10% by weight. It is recommended that solutions be stored for no longer than 3 days due to the formation of carbon disulphide.

Check Digit Verification of cas no

The CAS Registry Mumber 140-93-2 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 1,4 and 0 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 140-93:
(5*1)+(4*4)+(3*0)+(2*9)+(1*3)=42
42 % 10 = 2
So 140-93-2 is a valid CAS Registry Number.
InChI:InChI=1/C4H8OS2.Na/c1-3(2)5-4(6)7;/h3H,1-2H3,(H,6,7);/q;+1

140-93-2SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 13, 2017

Revision Date: Aug 13, 2017

1.Identification

1.1 GHS Product identifier

Product name proxan-sodium

1.2 Other means of identification

Product number -
Other names Sodium Isoproylxanthate

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:140-93-2 SDS

140-93-2Synthetic route

carbon disulfide
75-15-0

carbon disulfide

isopropyl alcohol
67-63-0

isopropyl alcohol

sodium isopropylxanthate
140-93-2

sodium isopropylxanthate

Conditions
ConditionsYield
With sodium hydroxide In Petroleum ether
With sodium hydroxide In toluene at 25 - 30℃; for 2h;
Stage #1: isopropyl alcohol With sodium at 65℃; for 3h; Inert atmosphere;
Stage #2: carbon disulfide for 1h;
136.67 g
Stage #1: isopropyl alcohol With sodium at 65℃; for 6h; Inert atmosphere;
Stage #2: carbon disulfide at 35℃; for 1h;
136.67 g
isopropyl alcohol
67-63-0

isopropyl alcohol

CS2

CS2

sodium isopropylxanthate
140-93-2

sodium isopropylxanthate

Conditions
ConditionsYield
With sodium hydroxide
carbon disulfide
75-15-0

carbon disulfide

sodium isopropylate
683-60-3

sodium isopropylate

sodium isopropylxanthate
140-93-2

sodium isopropylxanthate

Conditions
ConditionsYield
at 0 - 20℃;
cis-dichlorodioxobis(triphenylphosphine oxide)molybdenum(VI)

cis-dichlorodioxobis(triphenylphosphine oxide)molybdenum(VI)

sodium isopropylxanthate
140-93-2

sodium isopropylxanthate

(dioxomolybdenum)Cl(isopropyl xanthate)(triphenylphosphine oxide)

(dioxomolybdenum)Cl(isopropyl xanthate)(triphenylphosphine oxide)

Conditions
ConditionsYield
In dichloromethane byproducts: OP(C6H5)3, NaCl; soln. of MoO2Cl2(OP(C6H5)3)2 in CH2Cl2 added with stirring at room temp.to susp. of Na(C3H7OCS2)2 in CH2Cl2, mixt. stirring 3 h; NaCl fitered off, washed with CH2Cl2, filtrate concd., solid dried in vacuo and repeated washing with dried benzene; elem. anal.;98%
sodium isopropylxanthate
140-93-2

sodium isopropylxanthate

benzyl chloride
100-44-7

benzyl chloride

2-propylcarbonothioylthiomethylbenzene
51698-64-7

2-propylcarbonothioylthiomethylbenzene

Conditions
ConditionsYield
In water at 75℃; for 4h;97.1%
at 75℃; for 3h;
at 75℃; for 3h;
sodium isopropylxanthate
140-93-2

sodium isopropylxanthate

chloroformic acid ethyl ester
541-41-3

chloroformic acid ethyl ester

S-ethoxycarbonyl O-2-propyl dithiocarbonate
67969-80-6

S-ethoxycarbonyl O-2-propyl dithiocarbonate

Conditions
ConditionsYield
With cetyltrimethylammonim bromide In N,N-dimethyl-aniline at 10 - 25℃; for 6.5h;97.1%
sodium isopropylxanthate
140-93-2

sodium isopropylxanthate

4-anisidinium hydrogen sulfate

4-anisidinium hydrogen sulfate

C11H15NO2S

C11H15NO2S

Conditions
ConditionsYield
Stage #1: sodium isopropylxanthate; 4-anisidinium hydrogen sulfate With dihydrogen peroxide In water at 40℃; for 1.1h; Green chemistry;
Stage #2: With sulfuric acid In water at 80℃; for 2.2h; pH=7; Green chemistry;
97%
diisopropylammonium hydrogen sulphate
65087-26-5

diisopropylammonium hydrogen sulphate

sodium isopropylxanthate
140-93-2

sodium isopropylxanthate

C10H21NOS

C10H21NOS

Conditions
ConditionsYield
Stage #1: diisopropylammonium hydrogen sulphate; sodium isopropylxanthate With dihydrogen peroxide In water at 45℃; for 1.4h; Green chemistry;
Stage #2: With sulfuric acid In water at 80℃; for 2.3h; pH=7; Green chemistry;
96%
sodium isopropylxanthate
140-93-2

sodium isopropylxanthate

aniline sulfate
2424-53-5

aniline sulfate

phenyl-thiocarbamic acid S-iso-propyl ester
10129-28-9

phenyl-thiocarbamic acid S-iso-propyl ester

Conditions
ConditionsYield
Stage #1: sodium isopropylxanthate; aniline sulfate With dihydrogen peroxide In water at 40℃; for 1h; Green chemistry;
Stage #2: With sulfuric acid In water at 100℃; for 2h; pH=7; Green chemistry;
96%
di-n-propylammonium hydrogen sulphate
908126-51-2

di-n-propylammonium hydrogen sulphate

sodium isopropylxanthate
140-93-2

sodium isopropylxanthate

C10H21NOS

C10H21NOS

Conditions
ConditionsYield
Stage #1: di-n-propylammonium hydrogen sulphate; sodium isopropylxanthate With dihydrogen peroxide In water at 40℃; for 1h; Green chemistry;
Stage #2: With sulfuric acid In water at 70℃; for 2h; pH=7; Green chemistry;
95%
isopropylamine sulfate
859043-64-4

isopropylamine sulfate

sodium isopropylxanthate
140-93-2

sodium isopropylxanthate

Isopropyl-thiocarbamic acid S-isopropyl ester

Isopropyl-thiocarbamic acid S-isopropyl ester

Conditions
ConditionsYield
Stage #1: isopropylamine sulfate; sodium isopropylxanthate With dihydrogen peroxide In water at 45℃; for 1.3h; Green chemistry;
Stage #2: With sulfuric acid In water at 80℃; for 2.2h; pH=7; Green chemistry;
94%
sodium isopropylxanthate
140-93-2

sodium isopropylxanthate

4-chloroanilinium hydrogen sulfate

4-chloroanilinium hydrogen sulfate

N-(4-chlorophenyl)-S-(isopropyl)thiocarbamate
10129-38-1

N-(4-chlorophenyl)-S-(isopropyl)thiocarbamate

Conditions
ConditionsYield
Stage #1: sodium isopropylxanthate; 4-chloroanilinium hydrogen sulfate With dihydrogen peroxide In water at 40℃; for 1.1h; Green chemistry;
Stage #2: With sulfuric acid In water at 90℃; for 2.2h; pH=7; Green chemistry;
94%
sodium isopropylxanthate
140-93-2

sodium isopropylxanthate

ethylamine
75-04-7

ethylamine

O-isopropyl-N-ethylthionocarbamate
141-98-0

O-isopropyl-N-ethylthionocarbamate

Conditions
ConditionsYield
Stage #1: sodium isopropylxanthate With sodium carbonate; chloroacetic acid In water at 60℃; for 2h; pH=Ca. 8;
Stage #2: ethylamine In water at 20 - 70℃; for 1h;
94%
With palladium supported titanium-hexagonal mesoporous silica-10 In water at 75℃; for 10h; Reagent/catalyst; Solvent;93%
sodium isopropylxanthate
140-93-2

sodium isopropylxanthate

bis(dichlorostibino)methane
32278-97-0

bis(dichlorostibino)methane

{Sb(S2COC3H7)2}2CH2

{Sb(S2COC3H7)2}2CH2

Conditions
ConditionsYield
In methanol byproducts: NaCl; addition of a solution of 6.00 mmol of NaS2COiPr in 20 ml CH3OH drop by drop to a solution of 1.50 mmol of (Cl2Sb)2CH2 (1 hour) and stirring at 25°C, 3 - 5 hours;; filtration, washing with CH3OH and drying; elem. anal.;;92%
sodium isopropylxanthate
140-93-2

sodium isopropylxanthate

methylamine
74-89-5

methylamine

O-isopropyl methylcarbamothioate
20753-31-5

O-isopropyl methylcarbamothioate

Conditions
ConditionsYield
With palladium supported titanium-hexagonal mesoporous silica-10 In water at 75℃; for 10h;90%
bis(benzoylacetonato-O,O)dichlorotin(IV)

bis(benzoylacetonato-O,O)dichlorotin(IV)

sodium isopropylxanthate
140-93-2

sodium isopropylxanthate

isopropylxanthato(chloro)bis(benzoylacetonato)tin(IV)

isopropylxanthato(chloro)bis(benzoylacetonato)tin(IV)

Conditions
ConditionsYield
In acetone byproducts: NaCl; to a suspension of Cl2Sn(CH3COCHCOC6H5)2 in acetone a soln. of equimolar amount of sodium isopropyl xanthate was added, mixture was refluxed for 6 h, formed NaCl was filtered off, removal of the solvent under reduced pressure;; formed solid was recrystd. from a mixture of acetone and petroleum ether; elem. anal.;;89%
In acetone byproducts: NaCl; refluxed (6 h), exclusion of moisture; evapn. (low pressure); recrystn. (acetone/petroleum ether); elem. anal.;89%
sodium isopropylxanthate
140-93-2

sodium isopropylxanthate

2-chloro-ethanol
107-07-3

2-chloro-ethanol

O-isopropyl-S-hydroxyethylxanthate

O-isopropyl-S-hydroxyethylxanthate

Conditions
ConditionsYield
In water at 60℃; for 5h;88.3%
sodium isopropylxanthate
140-93-2

sodium isopropylxanthate

para-methylbenzylamine
104-84-7

para-methylbenzylamine

O-isopropyl 4-methylbenzylcarbamothioate

O-isopropyl 4-methylbenzylcarbamothioate

Conditions
ConditionsYield
With palladium supported titanium-hexagonal mesoporous silica-10 In water at 75℃; for 12h;88%
dichloro-bis(pentane-2,4-dionato)tin(IV)

dichloro-bis(pentane-2,4-dionato)tin(IV)

sodium isopropylxanthate
140-93-2

sodium isopropylxanthate

isopropylxanthato(chloro)bis(acetylacetonato)tin(IV)

isopropylxanthato(chloro)bis(acetylacetonato)tin(IV)

Conditions
ConditionsYield
In acetone byproducts: NaCl; to a suspension of Cl2Sn(CH3COCHCOCH3)2 in acetone a soln. of equimolar amount of sodium isopropyl xanthate was added, mixture was refluxed for 6 h, formed NaCl was filtered off, removal of the solvent under reduced pressure;; formed solid was recrystd. from a mixture of acetone and petroleum ether; elem. anal.;;87%
In acetone byproducts: NaCl; refluxed (6 h), exclusion of moisture; evapn. (low pressure); recrystn. (acetone/petroleum ether); elem. anal.;87%
chlorotriphenylgermane
1626-24-0

chlorotriphenylgermane

sodium isopropylxanthate
140-93-2

sodium isopropylxanthate

(O-isopropyl dithiocarbonato)triphenylgermane
133401-59-9

(O-isopropyl dithiocarbonato)triphenylgermane

Conditions
ConditionsYield
In carbon disulfide byproducts: NaCl; under vac.; CS2 was distilled to dithiocarbonate and halophenylgermane at -196°C; warmed up slowly toward ambient temp. with stirring; reaction started below 0°C; cooled; ice bath after 15 min; stirred for 3-4 h; filtration; solvent was pumped off; redissolved (CS2); evapn. at 4°C; crystn.; elem. anal.;86%
{C5H5Ni(P(C4H9-n)3)2}Cl

{C5H5Ni(P(C4H9-n)3)2}Cl

sodium isopropylxanthate
140-93-2

sodium isopropylxanthate

C5H5Ni(P(C4H9-n)3)SC(S)OCH(CH3)2
52247-34-4

C5H5Ni(P(C4H9-n)3)SC(S)OCH(CH3)2

Conditions
ConditionsYield
In water room temp.; with excess of NaSC(S)OCH(CH3)2; extn. of the brown ppt. with ether or benzene; drying, evapn. in vac.; recrystn. from benzene or benzene/hexane;85%
In water
bis(dibenzoylmethanato-O,O)dichlorotin(IV)

bis(dibenzoylmethanato-O,O)dichlorotin(IV)

sodium isopropylxanthate
140-93-2

sodium isopropylxanthate

isopropylxanthato(chloro)bis(dibenzoylmethanato)tin(IV)

isopropylxanthato(chloro)bis(dibenzoylmethanato)tin(IV)

Conditions
ConditionsYield
In acetone byproducts: NaCl; to a suspension of Cl2Sn(C6H5COCHCOC6H5)2 in acetone a soln. of equimolar amount of sodium isopropyl xanthate was added, mixture was refluxed for 6 h, formed NaCl was filtered off, removal of the solvent under reduced pressure;; formed solid was recrystd. from a mixture of acetone and petroleum ether; elem. anal.;;85%
bis(dibenzoylmethanato-O,O)dichlorotin(IV)

bis(dibenzoylmethanato-O,O)dichlorotin(IV)

sodium isopropylxanthate
140-93-2

sodium isopropylxanthate

isopropyl xanthato(chloro)bis(dibenzoylmethanato)tin(IV)

isopropyl xanthato(chloro)bis(dibenzoylmethanato)tin(IV)

Conditions
ConditionsYield
In acetone byproducts: NaCl; refluxed (6 h), exclusion of moisture; evapn. (low pressure); recrystn. (acetone/petroleum ether); elem. anal.;85%
dioxomolybdenum(VI) dibromide bis(dimethylsulfoxide)

dioxomolybdenum(VI) dibromide bis(dimethylsulfoxide)

sodium isopropylxanthate
140-93-2

sodium isopropylxanthate

MoO2Br(O-Pr(i) dithiocarbonate)(dimethylsulfoxide)

MoO2Br(O-Pr(i) dithiocarbonate)(dimethylsulfoxide)

Conditions
ConditionsYield
In dichloromethane byproducts: NaBr, Me2SO; suspn. of Na-compound in CH2Cl2 added to soln. of Mo-compound in CH2Cl2 in 1:1 molar ratio with constant stirring; stirred for 3 h; filtered; washed with CH2Cl2; excess solvent removed; dried in vacuo; washed repeatedly with dried benzene; elem. anal.;85%
(2-methylallyl)palladium-chloride dimer

(2-methylallyl)palladium-chloride dimer

sodium isopropylxanthate
140-93-2

sodium isopropylxanthate

[(η3-CH2C(CH3)CH2)Pd(S2CO(i-Pr))]

[(η3-CH2C(CH3)CH2)Pd(S2CO(i-Pr))]

Conditions
ConditionsYield
In acetonitrile under dry Ar using Schlenk techniques; to soln. of Pd complex in MeCN added soln. of anhyd. xanthate ligand in MeCN (molar ratio 1:2); mixt. stirred at room temp. for 0.5 h; filtered through small Celite pad; volatiles removed (vac); residue recrystd. (CH2Cl2-hexane); elem. anal.;85%
sodium isopropylxanthate
140-93-2

sodium isopropylxanthate

propylamine; sulfate (1:1)
908126-52-3

propylamine; sulfate (1:1)

Propyl-thiocarbamic acid S-isopropyl ester

Propyl-thiocarbamic acid S-isopropyl ester

Conditions
ConditionsYield
Stage #1: sodium isopropylxanthate; propylamine; sulfate (1:1) With dihydrogen peroxide In water at 40℃; for 1.2h; Green chemistry;
Stage #2: With sulfuric acid In water at 80℃; for 2.3h; pH=7; Green chemistry;
85%
sodium isopropylxanthate
140-93-2

sodium isopropylxanthate

benzylamine
100-46-9

benzylamine

O-isopropyl benzylcarbamothioate
188257-29-6

O-isopropyl benzylcarbamothioate

Conditions
ConditionsYield
With palladium supported titanium-hexagonal mesoporous silica-10 In water at 75℃; for 12h;85%
sodium isopropylxanthate
140-93-2

sodium isopropylxanthate

Trimethylenediamine
109-76-2

Trimethylenediamine

O,O-diisopropyl propane-1,3-diyldicarbamothioate

O,O-diisopropyl propane-1,3-diyldicarbamothioate

Conditions
ConditionsYield
With palladium supported titanium-hexagonal mesoporous silica-10 In water at 75℃; for 12h;85%
sodium isopropylxanthate
140-93-2

sodium isopropylxanthate

1,4-diaminobutane
110-60-1

1,4-diaminobutane

O,O-diisopropyl butane-1,4-diyldicarbamothioate

O,O-diisopropyl butane-1,4-diyldicarbamothioate

Conditions
ConditionsYield
With palladium supported titanium-hexagonal mesoporous silica-10 In water at 75℃; for 13h;85%
dichloro bis(acetonitrile) palladium(II)
21264-30-2, 90243-59-7, 14592-56-4

dichloro bis(acetonitrile) palladium(II)

sodium isopropylxanthate
140-93-2

sodium isopropylxanthate

Pd(S2COCH(CH3)2)2
40103-62-6

Pd(S2COCH(CH3)2)2

Conditions
ConditionsYield
In acetonitrile under dry Ar using Schlenk techniques; to soln. of Pd complex in MeCN added soln. of anhyd. xanthate ligand in MeCN (molar ratio 1:2); mixt. stirred at room temp. for 0.5 h; filtered through small Celite pad; volatiles removed (vac); residue recrystd. (CH2Cl2-hexane); elem. anal.;84%
1,1,2,3,4,5-hexahydro-1,1-diiodotellurophene
62292-22-2

1,1,2,3,4,5-hexahydro-1,1-diiodotellurophene

sodium isopropylxanthate
140-93-2

sodium isopropylxanthate

Telluracyclopentan-1,1-bis(isopropylxanthogenat)

Telluracyclopentan-1,1-bis(isopropylxanthogenat)

Conditions
ConditionsYield
In chloroform; isopropyl alcohol for 1h; Ambient temperature;83%
2-chloro-1,2-bis(4-nitrophenyl)ethanone
57507-83-2

2-chloro-1,2-bis(4-nitrophenyl)ethanone

sodium isopropylxanthate
140-93-2

sodium isopropylxanthate

C18H16N2O6S2
1246173-44-3

C18H16N2O6S2

Conditions
ConditionsYield
In acetone83%
sodium isopropylxanthate
140-93-2

sodium isopropylxanthate

diethyl ammonium hydrogen sulfate
26292-53-5, 72962-45-9, 72962-47-1

diethyl ammonium hydrogen sulfate

C8H17NOS

C8H17NOS

Conditions
ConditionsYield
Stage #1: sodium isopropylxanthate; diethylammonium hydrogen sulphate With dihydrogen peroxide In water at 45℃; for 1.2h; Green chemistry;
Stage #2: With sulfuric acid In water at 80℃; for 2.2h; pH=7; Green chemistry;
83%

140-93-2Relevant articles and documents

Photocatalytic C-O Bond Cleavage of Alcohols Using Xanthate Salts

Maruo, Yuri,Matsugasako, Tatsuki,Nanjo, Takeshi,Takemoto, Yoshiji

supporting information, (2022/01/15)

The homolytic cleavage of C-O bonds to afford alkyl radicals is an attractive yet challenging transformation in organic synthesis. Herein we describe a photocatalyzed deoxygenative C-C coupling reaction of xanthate salts, which can be easily prepared from the corresponding alcohols. The key to the success of this strategy is the low oxidation potential of the xanthate salt and the use of an appropriate phosphine to accelerate the desulfurative release of carbonyl sulfide.

POLYMERIC MATERIALS FORMED USING INITIATORS WITH A KETONE GROUP AND TWO THIOCARBONYLTHIO-CONTAINING GROUPS

-

Page/Page column 49, (2019/09/12)

Controlled radical initiators, reaction mixtures containing the controlled radical initiators and various ethylenically unsaturated monomers, polymeric materials formed from the reaction mixtures, crosslinkable compositions containing the polymeric materials, crosslinked compositions formed from the crosslinkable compositions, and various articles are provided. The controlled radical initiators are bis-dithiocarbamate or bis-dithiocarbonate compounds having a carbonyl group between the two dithiocarbamate or dithiocarbonate groups.

Mixed ligand zinc(II) and cadmium(II) complexes with alkyl xanthates and 2,2′-bipyridyl

Hussain Reddy,Sambasiva Reddy

, p. 1118 - 1120 (2007/10/03)

Mixed ligand complexes of zinc(II) and cadmium(II) with alkyl xanthates as primary ligands and 2,2′-bipyridyl (bpy) as secondary ligand have been synthesized and characterized by elemental analysis, infrared and 1H NMR spectral data. Infrared spectra reveal that xanthates act as uni- and bidentate ligands in zinc and cadmium complexes respectively. Tetrahedral geometry is assigned for zinc(II) complexes while an octahedral structure for cadmium(II) complexes.

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