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1-UNDECANETHIOLICSC: 1621
n-Undecyl mercaptan
Undecyl mercaptan
Undecanethiol
April 2006
CAS #: 5332-52-5

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Combustible. Gives off irritating or toxic fumes (or gases) in a fire.    NO open flames.    Use water spray, powder, alcohol-resistant foam, carbon dioxide.   

   
  SYMPTOMS PREVENTION FIRST AID
Inhalation Cough. Sore throat. Headache. Nausea.  Use ventilation.  Fresh air, rest. 
Skin Redness.  Protective gloves.  Remove contaminated clothes. 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.  Do not eat, drink, or smoke during work.  Give one or two glasses of water to drink. 

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. 

According to UN GHS Criteria

 

Transportation
UN Classification
 

STORAGE
Separated from strong oxidants, strong bases, strong acids and strong reducing agents. 
PACKAGING
 
1-UNDECANETHIOL ICSC: 1621
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
LIQUID WITH CHARACTERISTIC ODOUR. 

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

Chemical dangers
Reacts violently with oxidants, reducing agents, strong acids and strong bases. Decomposes on heating. This produces toxic and corrosive fumes including hydrogen sulfide and sulfur oxides. 

Formula: C11H24S / CH3(CH2)10SH
Molecular mass: 188.4
Boiling point: 257-259°C
Melting point: -3°C
Relative density (water = 1): 0.84
Solubility in water: none
Flash point: 109°C
Explosive limits, vol% in air: 0.6-? 


EXPOSURE & HEALTH EFFECTS

Routes of exposure
 

Effects of short-term exposure
The substance is irritating to the eyes, skin and respiratory tract. 

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
Health effects of exposure to the substance have not been investigated adequately.
Environmental effects from the substance have not been investigated adequately.
See ICSC 0042. 

ADDITIONAL INFORMATION
  EC Classification
 

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    See Also:
       Toxicological Abbreviations