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BENZENETHIOLICSC: 0463
November 1998
CAS #: 108-98-5Thiophenol
Mercaptobenzene
Phenyl mercaptan
UN #: 2337
EINECS #: 203-635-3

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Flammable. Gives off irritating or toxic fumes (or gases) in a fire.    NO open flames, NO sparks and NO smoking.    Use powder, AFFF, foam, carbon dioxide.  In case of fire: keep drums, etc., cool by spraying with water. 

 PREVENT GENERATION OF MISTS!  
  SYMPTOMS ACUTE HAZARDS FIRST AID
Inhalation Cough. Headache. Nausea. Sore throat.  Use ventilation, local exhaust or breathing protection.  Fresh air, rest. Refer for medical attention. 
Skin MAY BE ABSORBED! Redness. Pain.  Protective gloves. Protective clothing.  Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention . 
Eyes Redness. Pain. Blurred vision.  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. Refer for medical attention . 

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Personal protection: chemical protection suit including self-contained breathing apparatus. Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations. 

According to UN GHS Criteria

 

Transportation
UN Classification
UN Hazard Class: 6.1; UN Subsidiary Risks: 3; UN Pack Group: I 

STORAGE
Separated from strong oxidants, strong acids and food and feedstuffs. 
PACKAGING
Do not transport with food and feedstuffs. 
BENZENETHIOL ICSC: 0463
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS LIQUID WITH CHARACTERISTIC ODOUR. 

Physical dangers
 

Chemical dangers
Decomposes on burning. Decomposes on contact with acids. This produces toxic fumes of sulfur oxides. Reacts with strong oxidants. 

Formula: C6H6S / C6H5SH
Molecular mass: 110.2
Boiling point: 168°C
Melting point: -15°C
Relative density (water = 1): 1.07
Solubility in water: none
Vapour pressure, kPa at 18°C: 0.13
Relative vapour density (air = 1): 3.8
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.00
Flash point: <55°C
Explosive limits, vol% in air: 1.2-?
Octanol/water partition coefficient as log Pow: 2.52  


EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation, through the skin 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 nervous system. 

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

Effects of long-term or repeated exposure
Repeated or prolonged contact with skin may cause dermatitis. 


Occupational exposure limits
TLV: 0.1 ppm as TWA; (skin) 

ENVIRONMENT
 

NOTES
 

ADDITIONAL INFORMATION
  EC Classification
 

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    See Also:
       Toxicological Abbreviations
       BENZENETHIOL (JECFA Evaluation)