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1-DODECANETHIOL ICSC: 0042
Date of Peer Review: October 2004

Dodecyl mercaptan
Lauryl mercaptan
CAS # 112-55-0 C12H25SH
RTECS # JR3155000 Molecular mass: 202.4
UN #
EC #
TYPES OF HAZARD / EXPOSURE ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE FIGHTING
FIRE Combustible.
NO open flames.
Powder, AFFF, foam, carbon dioxide.
EXPLOSION Above 88C explosive vapour/air mixtures may be formed.
Above 88C use a closed system, ventilation.

EXPOSURE
STRICT HYGIENE!

Inhalation Cough. Headache. Nausea. Sore throat.
Ventilation, local exhaust, or breathing protection.
Fresh air, rest. Refer for medical attention.
Skin Redness.
Protective gloves. Protective clothing.
Remove contaminated clothes. Rinse skin with plenty of water or shower.
Eyes Redness. Pain.
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 take to a doctor.
Ingestion Nausea. Vomiting. Headache. Abdominal pain. Diarrhoea.
Do not eat, drink, or smoke during work.
Rinse mouth. Give plenty of water to drink. Refer for medical attention.
SPILLAGE DISPOSAL PACKAGING & LABELLING
Collect leaking and spilled liquid in sealable containers as far as possible. Carefully collect remainder. Personal protection: self-contained breathing apparatus.
EU Classification
UN Classification

EMERGENCY RESPONSE SAFE STORAGE
NFPA Code: H 2; F 1; R 0;
Separated from strong oxidants.
IPCS
International
Programme on
Chemical Safety
Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities IPCS, CEC 2004

SEE IMPORTANT INFORMATION ON BACK


1-DODECANETHIOL ICSC: 0042
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
COLOURLESS TO PALE YELLOW LIQUID, WITH CHARACTERISTIC ODOUR.

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.
INHALATION RISK:
A harmful contamination of the air can be reached very quickly on evaporation of this substance at 20C.

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.
PHYSICAL PROPERTIES
Boiling point: 266-285C
Melting point: -7 - -9C
Relative density (water = 1): 0.85
Solubility in water: none
Vapour pressure, kPa at 25C: 0.33
Relative vapour density (air = 1): 7.0
Relative density of the vapour/air-mixture at 20C (air = 1): 1.02
Flash point: 88C o.c.
ENVIRONMENTAL DATA

NOTES
Do NOT take working clothes home.
Card has been partly updated in April 2005. See section Explosion.
ADDITIONAL INFORMATION


LEGAL NOTICE Neither the CEC nor the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information
IPCS, CEC 2004