n-Undecyl mercaptan
Undecyl mercaptan
Undecanethiol
C11H24S / CH3(CH2)10SH
Molecular mass: 188.4
ICSC # 1621
CAS # 5332-52-5
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Types of Hazard/ Exposure
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Acute Hazards/ Symptoms
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Prevention
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First Aid/
Fire Fighting
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FIRE
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Combustible.
Gives off irritating or toxic fumes (or gases) in a fire.
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NO open flames.
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Powder, alcohol-resistant foam, water spray, carbon dioxide.
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Explosion
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Exposure
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•Inhalation
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Cough.
Sore throat.
Headache.
Nausea.
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Ventilation.
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Fresh air, rest.
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•Skin
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Redness.
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Protective gloves.
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Remove contaminated clothes.
Rinse and then wash skin with water and soap.
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•Eyes
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Redness.
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Safety spectacles,
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First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
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•Ingestion
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Headache.
Nausea.
Vomiting.
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Do not eat, drink, or smoke during work.
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Give one or two glasses of water to drink.
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Spillage Disposal
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Storage
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Packaging & Labelling
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Personal protection: filter respirator for organic gases and vapours.
Collect leaking liquid in sealable containers.
Absorb remaining liquid in sand or inert absorbent and remove to safe place.
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Separated from
strong oxidants,
strong bases,
strong acids
and
strong reducing agents
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Important Data
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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.
The substance decomposes
on heating
producing
toxic and corrosive fumes,
including
hydrogen sulfide
and
sulfur oxides.
Occupational Exposure Limits:
TLV not established.
MAK not established.
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Routes of Exposure:
Inhalation Risk:
No indication can be given about the rate in which a harmful concentration in the air is reached on evaporation of this substance at 20°C.
Effects of Short-Term Exposure:
The substance
is irritating to
the eyes,
the skin
and
the respiratory tract.
Effects of Long-Term or Repeated Exposure:
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Physical
Properties
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Boiling point: 257-259°C
Melting point: -3°C
Relative density (water = 1): 0.84
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Solubility in water: none
Flash point: 109°C
Explosive limits, vol% in air: 0.6-?
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Environmental
Data
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N O T E S
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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.
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ADDITIONAL INFORMATION
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ICSC: 1621
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1-UNDECANETHIOL
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(C) IPCS, CEC, 1994
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IMPORTANT LEGAL NOTICE:
Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH,
the CEC or the IPCS is responsible for the use which might be made of this
information. This card contains the collective views of the IPCS Peer Review Committee and may
not reflect in all cases all the detailed requirements included in national legislation
on the subject. The user should verify compliance of the cards with the relevant legislation
in the country of use.
The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
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