Dodecyl mercaptan
Lauryl mercaptan
C12H25SH
Molecular mass: 202.4
ICSC # 0042
CAS # 112-55-0
RTECS # JR3155000
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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.
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NO open flames.
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Powder, AFFF, foam, carbon dioxide.
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Explosion
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Above 88°C explosive vapour/air mixtures may be formed.
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Above 88°C use a closed system, ventilation.
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Exposure
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STRICT HYGIENE!
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•Inhalation
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Cough.
Headache.
Nausea.
Sore throat.
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Ventilation, local exhaust, or breathing protection.
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Fresh air, rest.
Refer for medical attention.
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•Skin
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Redness.
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Protective gloves.
Protective clothing.
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Remove contaminated clothes.
Rinse skin with plenty of water or shower.
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•Eyes
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Redness.
Pain.
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Safety goggles
or
eye protection in combination with breathing protection.
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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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Nausea.
Vomiting.
Headache.
Abdominal pain.
Diarrhoea.
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Do not eat, drink, or smoke during work.
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Rinse mouth.
Give plenty of water to drink.
Refer for medical attention.
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Spillage Disposal
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Storage
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Packaging & Labelling
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Collect leaking and spilled liquid in sealable containers as far as possible.
Carefully collect remainder.
Personal protection: self-contained breathing apparatus.
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Separated from
strong oxidants.
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Important Data
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Physical State; Appearance:
COLOURLESS
TO PALE YELLOW LIQUID
, WITH CHARACTERISTIC ODOUR.
Physical Dangers:
Chemical Dangers:
The substance decomposes
on burning
producing
toxic gases
.
Reacts with strong oxidants.
Occupational Exposure Limits:
TLV:
(Inhalable fraction)
0.1 ppm as TWA; SEN; (ACGIH 2004).
MAK not established.
OSHA PEL: none
NIOSH REL: C 0.5 ppm (4.1 mg/m3) 15-minute
NIOSH IDLH: N.D. See: IDLH INDEX
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Routes of Exposure:
Inhalation Risk:
A harmful contamination of the air can be reached very quickly 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:
Repeated or prolonged contact may cause skin sensitization.
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Physical
Properties
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Boiling point: 266-285°C
Melting point: -7 - -9°C
Relative density (water = 1): 0.85
Solubility in water:
none
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Vapour pressure, kPa at 25°C: 0.33
Relative vapour density (air = 1): 7.0
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.02
Flash point: 88°C o.c.
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Environmental
Data
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N O T E S
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Do NOT take working clothes home.
Card has been partly updated in April 2005. See section Explosion.
NFPA Code: H 2; F 1; R 0;
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ADDITIONAL INFORMATION
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ICSC: 0042
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1-DODECANETHIOL
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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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