Ethanethiol

Product Name: Ethanethiol

Synonyms: ethylmercaptide;Ethylmerkaptan;ethylmerkaptan(czech);ethylsulfhydrate;ethylthioalcohol;Etilmercaptano;LPG ethyl mercaptan 1010;lpgethylmercaptan1010

CAS: 75-08-1

MF: C2H6S

MW: 62.13

EINECS: 200-837-3

Product Categories: Building Blocks;Chemical Synthesis;Organic Building Blocks;Sulfur Compounds;Thiols/Mercaptans;API Intermediate;-;Pharmaceutical Intermediates;Alphabetical Listings;E-F;Flavors and Fragrances

Mol File: 75-08-1.mol

Ethanethiol Structure

Ethanethiol Chemical Properties

Melting point -148 °C

Boiling point 35 °C(lit.)

density 0.839 g/mL at 25 °C(lit.)

vapor density 2.1 (vs air)

vapor pressure 8.51 psi ( 20 °C)

refractive index n20/D 1.4306(lit.)

FEMA 4258 | ETHANETHIOL

Fp 1 °F

storage temp. 2-8°C

solubility 6.8g/l

pka 10.6(at 25℃)

form Liquid

color Colorless

Odor Ethanethiol has a strongly disagreeable odor that humans can detect in minute concentrations. The threshold for human detection is as low as one part in 2.8 billion parts of air. Its odor resembles that of leeks, onions or cooked cabbage, but is quite distinct. Ethanethiol is intentionally added to butane and propane (see: LPG) to impart an easily noticed smell to these normally odorless fuels that pose the threat of fire, explosion, and asphyxiation.

Odor Strong chunk; offensive garlic.

Odor Threshold 0.0000087ppm

explosive limit 2.8-18%(V)

Water Solubility Soluble in alcohol, ether, waterMiscible with alcohol, petroleum naphtha, acetone, dilute alkali and ether. Slightly miscible with water.

Merck 14,3726

JECFA Number 1659

BRN 773638

Henry's Law Constant 3.57(x 10-3 atm?m3/mol) at 25 °C (Przyjazny et al., 1983)

Exposure limits TLV-TWA 0.5 ppm (～1.3 mg/m3 ) (ACGIH and MSHA); ceiling 10 ppm (OSHA); IDLH 2500 ppm (NIOSH).

Stability: Stable. Extremely flammable - note low flash point. Incompatible with oxidizing agents, strong acids. May form explosive mixtures with air.

CAS DataBase Reference 75-08-1(CAS DataBase Reference)

NIST Chemistry Reference Ethanethiol(75-08-1)

EPA Substance Registry System Ethyl mercaptan (75-08-1)

Safety Information

Hazard Codes F,Xn,N,F+

Risk Statements 11-20-50/53-51/53-12-20/22

Safety Statements 16-25-60-61

RIDADR UN 2363 3/PG 1

WGK Germany 3

RTECS KI9625000

F 13

Autoignition Temperature 570 °F

TSCA Yes

HS Code 2930 90 98

HazardClass 3

PackingGroup I

Hazardous Substances Data 75-08-1(Hazardous Substances Data)

Toxicity LD50 orally in Rabbit: 682 mg/kg