Product Name

  • Name

    2-Propanethiol

  • EINECS 200-861-4
  • CAS No. 75-33-2
  • Article Data43
  • CAS DataBase
  • Density 0.82 g/cm3
  • Solubility slightly soluble in water
  • Melting Point -131 °C(lit.)
  • Formula C3H8S
  • Boiling Point 55.8 °C at 760 mmHg
  • Molecular Weight 76.1625
  • Flash Point -34 °C
  • Transport Information UN 2402 3/PG 2
  • Appearance Colorless liquid
  • Safety 16-26-9-37/39-33
  • Risk Codes 11-36/37/38-36/38
  • Molecular Structure Molecular Structure of 75-33-2 (2-Propanethiol)
  • Hazard Symbols FlammableF,IrritantXi
  • Synonyms 1-Methylethanethiol;2-Mercaptopropane;2-Propylmercaptan;Isopropanethiol;Isopropyl mercaptan;Isopropylthiol;NSC 87537;i-Propylthiol;propane-2-thiol;
  • PSA 38.80000
  • LogP 1.32460

Synthetic route

diisopropyl sulfide
4253-89-8

diisopropyl sulfide

propionaldehyde
123-38-6

propionaldehyde

A

S-isopropyl thiol-propionate
2432-47-5

S-isopropyl thiol-propionate

B

2-propanethiol
75-33-2

2-propanethiol

Conditions
ConditionsYield
at 5℃; for 4h; Irradiation;A 40%
B 40%
Zn(2+)*2SC3H7(1-) = Zn(SC3H7)2

Zn(2+)*2SC3H7(1-) = Zn(SC3H7)2

A

propene
187737-37-7

propene

B

diisopropyl sulfide
4253-89-8

diisopropyl sulfide

C

zinc sulfide

zinc sulfide

D

2-propanethiol
75-33-2

2-propanethiol

Conditions
ConditionsYield
In neat (no solvent) under vac.,heated at 260 °C, 8 h,; GC;A 8%
B 22%
C n/a
D 17%
hexamethyl-[1,3,5]trithiane
828-26-2

hexamethyl-[1,3,5]trithiane

2-propanethiol
75-33-2

2-propanethiol

Conditions
ConditionsYield
at 215℃;
2-iodo-propane
75-30-9

2-iodo-propane

2-propanethiol
75-33-2

2-propanethiol

Conditions
ConditionsYield
With ethanol; water; potassium hydrosulfide
2-iodo-propane
75-30-9

2-iodo-propane

A

diisopropylsulfide
625-80-9

diisopropylsulfide

B

2-propanethiol
75-33-2

2-propanethiol

Conditions
ConditionsYield
With ethanol; potassium hydrosulfide
propene
187737-37-7

propene

diethyltetrasulfane
13730-34-2

diethyltetrasulfane

A

diisopropylsulfide
625-80-9

diisopropylsulfide

B

Prop-1-en-1-thiol
925-89-3

Prop-1-en-1-thiol

C

2-propanethiol
75-33-2

2-propanethiol

Conditions
ConditionsYield
at 180℃;
propene
187737-37-7

propene

A

1,2-dithiole-3-thione
534-25-8

1,2-dithiole-3-thione

B

2-propanethiol
75-33-2

2-propanethiol

Conditions
ConditionsYield
With sulfur at 240℃;
propene
187737-37-7

propene

2-propanethiol
75-33-2

2-propanethiol

Conditions
ConditionsYield
With sulfur
With hydrogen sulfide
With hydrogen sulfide; sulfur
With hydrogen sulfide at 200℃; under 1875.19 Torr; Temperature; Pressure;
propene
187737-37-7

propene

A

1-thiopropane
107-03-9

1-thiopropane

B

2-propanethiol
75-33-2

2-propanethiol

Conditions
ConditionsYield
With kieselguhr; nickel(II) sulfide; hydrogen sulfide at 250 - 300℃;
With kieselguhr; nickel(II) sulfide; hydrogen sulfide at 250 - 300℃;
diisopropyl sulfide
4253-89-8

diisopropyl sulfide

2-propanethiol
75-33-2

2-propanethiol

Conditions
ConditionsYield
With acetic acid; zinc
With diethyl ether; sodium
With phosphite radicals In water Rate constant; Mechanism; Irradiation;
propylene sulphide
1072-43-1

propylene sulphide

2-propanethiol
75-33-2

2-propanethiol

Conditions
ConditionsYield
With lithium aluminium tetrahydride; diethyl ether
thiourea
17356-08-0

thiourea

isopropyl bromide
75-26-3

isopropyl bromide

2-propanethiol
75-33-2

2-propanethiol

Conditions
ConditionsYield
With water anschliessende Verseifung mit KOH;
isopropyl alcohol
67-63-0

isopropyl alcohol

2-propanethiol
75-33-2

2-propanethiol

Conditions
ConditionsYield
With phosphorous (V) sulfide Erhitzen des erhaltenen Dithiophosphorsaeure-O,O'-diisopropylesters auf 160grad;
With hydrogen sulfide; thorium dioxide at 300 - 360℃;
acetone
67-64-1

acetone

2-propanethiol
75-33-2

2-propanethiol

Conditions
ConditionsYield
With cobalt polysulfide; sulfur; acetic acid at 150 - 200℃; under 77228.3 - 102971 Torr; Hydrogenation;
isopropyl bromide
75-26-3

isopropyl bromide

2-propanethiol
75-33-2

2-propanethiol

Conditions
ConditionsYield
With ethanol; potassium hydrosulfide
With sodium hydrogensulfide; ethanol
propene
187737-37-7

propene

A

1-thiopropane
107-03-9

1-thiopropane

B

propyl sulfide
111-47-7

propyl sulfide

C

n-propyl isopropyl sulfide
5008-73-1

n-propyl isopropyl sulfide

D

2-propanethiol
75-33-2

2-propanethiol

Conditions
ConditionsYield
With benzophenone; hydrogen sulfide; phosphorous acid trimethyl ester In diethylene glycol dimethyl ether at 10℃; for 4h; Product distribution; Irradiation; variation of reagents and solvents (t. butanol, benzene);
3,3,4,4-tetramethyl-1,2-oxathietane
102505-81-7

3,3,4,4-tetramethyl-1,2-oxathietane

A

2,3-dimethyl-2-mercapto-3-butanol
52267-30-8

2,3-dimethyl-2-mercapto-3-butanol

B

2-propanethiol
75-33-2

2-propanethiol

C

isopropyl alcohol
67-63-0

isopropyl alcohol

Conditions
ConditionsYield
With lithium aluminium tetrahydride In diethyl ether for 1h; Heating;A 8 % Chromat.
B 24 % Chromat.
C 68 % Chromat.
S-nitroso-2-propanethiol
69165-81-7

S-nitroso-2-propanethiol

A

2-propanethiol
75-33-2

2-propanethiol

B

2-hydroxyethanethiol
60-24-2

2-hydroxyethanethiol

Conditions
ConditionsYield
With sodium hydroxide In 1,4-dioxane at 25℃; Rate constant; pH 7.4;
diisopropylsulfide
625-80-9

diisopropylsulfide

2-propanethiol
75-33-2

2-propanethiol

Conditions
ConditionsYield
With hydrogen In acetone at -78℃; under 4 Torr; Mechanism; other alkyl sulfides and alkyl substituted-benzyl sulfides, competition with n-propyl sulfide, reaction rate relative to n-propyl sulfide, microwave generation of H from H2;
tetramethyl-[1,3]dithietane
31443-08-0

tetramethyl-[1,3]dithietane

sodium amalgam

sodium amalgam

2-propanethiol
75-33-2

2-propanethiol

acetic acid
64-19-7

acetic acid

acetone
67-64-1

acetone

sulfur

sulfur

hydrogen

hydrogen

cobalt sulfide-catalyst

cobalt sulfide-catalyst

2-propanethiol
75-33-2

2-propanethiol

Conditions
ConditionsYield
at 150 - 200℃; under 77228.3 - 102971 Torr;
acetic acid
64-19-7

acetic acid

acetone
67-64-1

acetone

sulfur

sulfur

hydrogen

hydrogen

nickel sulfide-catalyst

nickel sulfide-catalyst

2-propanethiol
75-33-2

2-propanethiol

Conditions
ConditionsYield
at 150 - 200℃; under 77228.3 - 102971 Torr;

2-Propanethiol Consensus Reports

Reported in EPA TSCA Inventory.

2-Propanethiol Standards and Recommendations

DOT Classification:  3; Label: Flammable Liquid, Poison (UN 1228); DOT Class: 6.1; Label: Poison, Flammable Liquid (UN 3071)

2-Propanethiol Specification

The IUPAC name of Isopropanethiol is propane-2-thiol. With the CAS registry number 75-33-2, it is also named as 1-Methylethanethiol. The product categorie is thiol flavor. It is colorless liquid with a strong skunk-like odor and is miscible with ethanol and ether, soluble in acetone, slightly soluble in water. It may liberate hydrogen sulfide when mixed with an acid. When heated to decomposition it emits highly toxic fumes of SOx. Additionally, Isopropanethiol is used as a solvent and organic synthesis intermediate. Besides, it must be sealed in the container and stored in a cool, dry place.

The other characteristics of this product can be summarized as: (1)ACD/LogP: 1.60; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 1.6; (4)ACD/LogD (pH 7.4): 1.6; (5)ACD/BCF (pH 5.5): 9.6; (6)ACD/BCF (pH 7.4): 9.6; (7)ACD/KOC (pH 5.5): 175.74; (8)ACD/KOC (pH 7.4): 175.65; (9)#H bond acceptors: 0; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 1; (12)Index of Refraction: 1.428; (13)Molar Refractivity: 23.8 cm3; (14)Molar Volume: 92.4 cm3; (15)Polarizability: 9.43×10-24 cm3; (16)Surface Tension: 22.2 dyne/cm; (17)Enthalpy of Vaporization: 27.91 kJ/mol; (18)Vapour Pressure: 246 mmHg at 25°C; (19)Exact Mass: 76.034671; (20)MonoIsotopic Mass: 76.034671; (21)Topological Polar Surface Area: 1; (22)Heavy Atom Count: 4; (23)Complexity: 10.8.

Uses of Isopropanethiol: It reacts with 3-chloro-propene to get 3-isopropylsulfanyl-propene. This reaction needs reagent sodium hydroxide and solvent methanol  at temperature of 0 °C. The reaction time is 1 hours. The yield is 90%.

When you are using this chemical, please be cautious about it as the following:
It is highly flammable, so people should keep it away from sources of ignition. And it is irritating to eyes, respiratory system and skin. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. If you want to contact this product, you must wear suitable gloves and eye/face protection. 

People can use the following data to convert to the molecule structure. 
1. SMILES:SC(C)C
2. InChI:InChI=1/C3H8S/c1-3(2)4/h3-4H,1-2H3 
3. InChIKey:KJRCEJOSASVSRA-UHFFFAOYAY

The following are the toxicity data which has been tested.

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LC50 inhalation 130gm/m3/1H (130000mg/m3) BEHAVIORAL: REGIDITY

BEHAVIORAL: MUSCLE CONTRACTION OR SPASTICITY)

SKIN AND APPENDAGES (SKIN): HAIR: OTHER
National Technical Information Service. Vol. OTS0571940,

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