Octadecanoic acid
1-Heptadecanecarboxylic acid
Cetylacetic acid
CH3(CH2)16COOH / C18H36O2
Molecular mass: 284.5
ICSC # 0568
CAS # 57-11-4
RTECS # WI2800000
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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, water spray, foam, carbon dioxide.
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Explosion
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Exposure
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PREVENT DISPERSION OF DUST!
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•Inhalation
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Local exhaust.
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Fresh air, rest.
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•Skin
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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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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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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 spilled substance into containers; if appropriate, moisten first to prevent dusting.
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Well closed.
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Important Data
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Physical State; Appearance:
WHITE CRYSTALS
OR POWDER
, WITH CHARACTERISTIC ODOUR.
Physical Dangers:
Dust explosion possible if in powder or granular form, mixed with air.
Chemical Dangers:
Occupational Exposure Limits:
TLV: (as stearates) 10 mg/m3 A4 (not classifiable as a human carcinogen); (ACGIH 2005).
MAK: IIb (not established but data is available) (DFG 2006).
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Routes of Exposure:
The substance can be absorbed into the body
by inhalation of its aerosol and
by ingestion.
Inhalation Risk:
Evaporation at 20°C is negligible; a nuisance-causing concentration of airborne particles can, however, be reached quickly by dispersing aerosols.
Effects of Short-Term Exposure:
Effects of Long-Term or Repeated Exposure:
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Physical
Properties
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Boiling point (decomposes): 376°C
Melting point: 69-72°C
Relative density (water = 1): 0.94-0.83
Solubility in water: none
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Vapour pressure, Pa at 174°C: 133
Flash point: 196°C
Auto-ignition temperature: 395°C
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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.
NFPA Code: H1; F1; R0;
Card has been partially updated in August 2007: see Occupational Exposure Limits.
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ADDITIONAL INFORMATION
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ICSC: 0568
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STEARIC ACID
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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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