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n-OCTYL MERCAPTANICSC: 1493 (November 2003)
1-Octanethiol
1-Mercaptooctane
1-Octylthiol
CAS #: 111-88-6
EC Number: 203-918-1

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Combustible. Gives off irritating or toxic fumes (or gases) in a fire.  Above 69°C explosive vapour/air mixtures may be formed.  NO open flames.  Above 69°C use a closed system and ventilation.  Use powder, carbon dioxide, foam.   

   
  SYMPTOMS PREVENTION FIRST AID
Inhalation Cough. Sore throat. Headache. Nausea. Vomiting. Dizziness.  Use ventilation, local exhaust or breathing protection.  Fresh air, rest. Refer for medical attention. 
Skin Redness.  Protective gloves.  Rinse and then wash skin with water and soap. 
Eyes Redness.  Wear safety spectacles.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion Headache. Nausea. Vomiting. Dizziness.  Do not eat, drink, or smoke during work.  Rinse mouth. Refer for medical attention . 

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Personal protection: filter respirator for organic gases and vapours adapted to the airborne concentration of the substance. 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. Do NOT let this chemical enter the environment. 

According to UN GHS Criteria

 

Transportation
UN Classification
 

STORAGE
Fireproof. Separated from strong bases, strong acids and oxidants. 
PACKAGING
 
n-OCTYL MERCAPTAN ICSC: 1493
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS LIQUID WITH CHARACTERISTIC ODOUR. 

Physical dangers
 

Chemical dangers
Decomposes on burning. This produces toxic gases including hydrogen sulfide and sulfur oxides. Reacts violently with oxidants. This generates fire hazard. Reacts with strong acids, strong bases and strong reducing agents. Attacks metals and rubber. 

Formula: C8H18S / CH2SH(CH2)6CH3
Molecular mass: 146.3
Boiling point: 199°C
Melting point: -49°C
Relative density (water = 1): 0.84
Solubility in water: none
Vapour pressure, kPa at 25°C: 0.06
Relative vapour density (air = 1): 5.0
Relative density of the vapour/air-mixture at 20°C (air = 1): 1
Flash point: 69°C o.c.
Explosive limits, vol% in air: 0.8-?
Octanol/water partition coefficient as log Pow: 4.21 (estimated) 


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 mildly irritating to the eyes, skin and respiratory tract. The substance may cause effects on the central nervous system. Exposure at high levels could cause lowering of consciousness. 

Inhalation risk
No indication can be given about the rate at which a harmful concentration of this substance in the air is reached on evaporation at 20°C. 

Effects of long-term or repeated exposure
 


OCCUPATIONAL EXPOSURE LIMITS
 

ENVIRONMENT
The substance is very toxic to aquatic organisms. 

NOTES
 

ADDITIONAL INFORMATION
  EC Classification
 

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    See Also:
       Toxicological Abbreviations