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tert-OCTYL MERCAPTANICSC: 1494
2,4,4-Trimethyl-2-pentanethiol
tert-Octanethiol
2-Methyl-2-heptanethiol
November 2003
CAS #: 141-59-3
UN #: 3023
EC Number: 205-490-1

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Flammable. Gives off irritating or toxic fumes (or gases) in a fire.  Above 46°C explosive vapour/air mixtures may be formed.  NO open flames, NO sparks and NO smoking.  Above 46°C use a closed system, ventilation and explosion-proof electrical equipment.  Use powder, carbon dioxide, foam.  In case of fire: keep drums, etc., cool by spraying with water. 

 STRICT HYGIENE!  
  SYMPTOMS PREVENTION FIRST AID
Inhalation Headache. Nausea. Vomiting. Dizziness. Unconsciousness.  Use ventilation, local exhaust or breathing protection.  Fresh air, rest. Artificial respiration may be needed. Refer for medical attention. 
Skin   Protective gloves.  Remove contaminated clothes. Rinse and then wash skin with water and soap. 
Eyes Redness.  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. Wash hands before eating.  Rinse mouth. Induce vomiting (ONLY IN CONSCIOUS PERSONS!). 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
Fireproof. Separated from strong bases, strong acids and oxidants. 
PACKAGING
 
tert-OCTYL MERCAPTAN ICSC: 1494
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 many metals and rubber. 

Formula: C8H18S / (CH3)2CSHCH2C(CH3)3
Molecular mass: 146.3
Boiling point: 155°C
Melting point: -74°C
Relative density (water = 1): 0.85
Solubility in water: none
Relative vapour density (air = 1): 5.0
Flash point: 46°C o.c.
Explosive limits, vol% in air: 0.8-? 


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 mildly irritating to the eyes. The substance may cause effects on the central nervous system. This may result in convulsions, lowering of consciousness and respiratory depression. Exposure could cause death. 

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
 

NOTES
Environmental effects from the substance have not been investigated. 

ADDITIONAL INFORMATION
  EC Classification
 

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    See Also:
       Toxicological Abbreviations