IPCS INCHEM Home
ETHANETHIOLICSC: 0470
October 2004
CAS #: 75-08-1Ethyl mercaptan
Thioethyl alcohol
UN #: 2363
EINECS #: 200-837-3

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Extremely flammable. Gives off irritating or toxic fumes (or gases) in a fire.  Vapour/air mixtures are explosive.  NO open flames, NO sparks and NO smoking.  Closed system, ventilation, explosion-proof electrical equipment and lighting.  Use powder, foam, carbon dioxide.  In case of fire: keep drums, etc., cool by spraying with water. 

 STRICT HYGIENE!  
  SYMPTOMS ACUTE HAZARDS FIRST AID
Inhalation Dizziness. Headache. Nausea. Vomiting. Tremor. Weakness. Unconsciousness.  Use ventilation, local exhaust or breathing protection.  Fresh air, rest. Artificial respiration may be needed. Refer for medical attention. 
Skin Redness.  Protective gloves.  Rinse skin with plenty of water or shower. Rinse skin with plenty of water or shower. 
Eyes Redness. Pain.  Wear safety goggles or eye protection in combination with breathing protection.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion See Inhalation.  Do not eat, drink, or smoke during work.  Rinse mouth. Rinse mouth. Give one or two glasses of water to drink. Do NOT induce vomiting. Refer for medical attention . 

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Evacuate danger area! Personal protection: self-contained breathing apparatus. Do NOT wash away into sewer. Collect leaking and spilled liquid in sealable containers as far as possible. 

According to UN GHS Criteria

 

Transportation
UN Classification
UN Hazard Class: 3; UN Pack Group: I 

STORAGE
Fireproof. Separated from strong oxidants and strong acids. Cool. 
PACKAGING
 
ETHANETHIOL ICSC: 0470
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS LIQUID WITH PUNGENT ODOUR. 

Physical dangers
The vapour is heavier than air and may travel along the ground; distant ignition possible. 

Chemical dangers
Decomposes on heating. This produces toxic fumes including hydrogen sulfide (see ICSC 0165) and sulfur oxides. The substance is a weak acid. Reacts with oxidants. This generates fire and explosion hazard. Reacts with strong acids. This produces toxic gases of hydrogen sulfide and sulfur oxides. 

Formula: C2H5SH
Molecular mass: 62.1
Boiling point: 35°C
Melting point: -144.4°C
Relative density (water = 1): 0.839
Solubility in water, g/100ml at 20°C: 0.68
Vapour pressure, kPa at 20°C: 58.9
Relative vapour density (air = 1): 2.14
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.5
Flash point: -48.3°C
Auto-ignition temperature: 299°C
Explosive limits, vol% in air: 2.8-18.2
Octanol/water partition coefficient as log Pow: 1.5  


EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation and by ingestion. 

Effects of short-term exposure
The substance is irritating to the eyes, skin and respiratory tract. The substance may cause effects on the central nervous system. This may result in lowering of consciousness and respiratory depression. 

Inhalation risk
A harmful contamination of the air can be reached very quickly on evaporation of this substance at 20°C. 

Effects of long-term or repeated exposure
 


Occupational exposure limits
TLV: 0.5 ppm as TWA.
MAK: 1.3 mg/m3, 0.5 ppm; peak limitation category: II(2); pregnancy risk group: D 

ENVIRONMENT
 

NOTES
 

ADDITIONAL INFORMATION
  EC Classification
Symbol: F, Xn, N; R: 11-20-50/53; S: (2)-16-25-60-61 

All rights reserved. The published material is being distributed without warranty of any kind, either expressed or implied. Neither ILO nor WHO nor the European Commission shall be responsible for the interpretation and use of the information contained in this material.
    See Also:
       Toxicological Abbreviations