Stearyl mercaptan
n-Octadecyl mercaptan
1-Octadecyl mercaptan
1-Mercaptooctadecane
n-Octadecanethiol
C18H38S / CH3(CH2)17SH
Molecular mass: 286.6
ICSC # 1622
CAS # 2885-00-9
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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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Ventilation.
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Fresh air, rest.
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•Skin
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Protective gloves.
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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 (remove contact lenses if easily possible).
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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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Rinse mouth.
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Spillage Disposal
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Storage
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Packaging & Labelling
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Sweep or shovel up spilled substance and remove to safe place.
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Separated from
strong oxidants,
strong acids,
bases
and
strong reducing agents.
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Important Data
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Physical State; Appearance:
OILY, WHITE SOLID IN VARIOUS FORMS
, WITH CHARACTERISTIC ODOUR.
Physical Dangers:
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:
A harmful contamination of the air will not or will only very slowly be reached on evaporation of this substance at 20°C
Effects of Short-Term Exposure:
The substance
is mildly irritating to
the eyes
Effects of Long-Term or Repeated Exposure:
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Physical
Properties
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Boiling point (decomposes): 366°C
Melting point: 24-31°C
Relative density (water = 1): 0.85
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Solubility in water: none
Flash point: 185°C c.c.
Octanol/water partition coefficient as log Pow: 9.12 (estimated)
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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.
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ADDITIONAL INFORMATION
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ICSC: 1622
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1-OCTADECANETHIOL
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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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