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Key Documents

Safety Information

8.07532

Sigma-Aldrich

2-Propanethiol

for synthesis

Synonym(s):

2-Propanethiol, Isopropyl mercaptan

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About This Item

Linear Formula:
(CH3)2CHSH
CAS Number:
75-33-2
Molecular Weight:
76.16
MDL number:
MFCD00004863
UNSPSC Code:
12352105
EC Index Number:
200-861-4
NACRES:
NA.22
form:
liquid
Assay:
≥98.0% (GC)

vapor pressure

331 hPa ( 25 °C)

Quality Level

200

Assay

≥98.0% (GC)

form

liquid

potency

>2000 mg/kg LD50, oral (Rat)

kinematic viscosity

0.468 cSt(20 °C)

bp

52.6 °C/1013 hPa

mp

-130.5 °C

transition temp

flash point -31 °C

density

0.813 g/cm3 at 20 °C

storage temp.

2-30°C

SMILES string

SC(C)C

InChI

1S/C3H8S/c1-3(2)4/h3-4H,1-2H3

InChI key

KJRCEJOSASVSRA-UHFFFAOYSA-N

General description

2-Propanethiol, also known as isopropyl mercaptan, is an organosulfur compound. The presence of the thiol group imparts significant nucleophilicity to the molecule, enabling it to participate in a variety of chemical reactions, including nucleophilic substitution. It serves as a precursor for synthesis of sulfur-containing compounds including thiol derivatives, thioethers, and disulfides. Additionally, it functions as a chain transfer agent in radical polymerization in the synthesis of polymers.

Analysis Note

Assay (GC, area%): ≥ 98.0 % (a/a)
Density (d 20 °C/ 4 °C): 0.813 - 0.815
Identity (IR): passes test

Signal Word

Danger

Hazard Statements

H225 - H317 - H410

Hazard Classifications

Aquatic Acute 1 - Aquatic Chronic 1 - Flam. Liq. 2 - Skin Sens. 1

Storage Class Code

3 - Flammable liquids

WGK

WGK 3

Flash Point(F)

-23.8 °F - closed cup

Flash Point(C)

-31 °C - closed cup

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

FSL

Flammable liquids
Type 1 petroleums
Hazardous rank II
Water insoluble liquid

ISHL Indicated Name

Substances Subject to be Indicated Names

ISHL Notified Names

Substances Subject to be Notified Names

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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