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
China
