ICSC 0568 - STEARIC ACID

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STEARIC ACID

ICSC: 0568
_{November 1997}

Octadecanoic acid
1-Heptadecanecarboxylic acid
Cetylacetic acid

CAS No: 57-11-4
RTECS No: WI2800000

CH₃(CH₂)₁₆COOH / C₁₈H₃₆O₂
Molecular mass: 284.5

TYPES OF HAZARD / EXPOSURE	ACUTE HAZARDS / SYMPTOMS	PREVENTION	FIRST AID / FIRE FIGHTING
FIRE	Combustible.	NO open flames.	Powder, water spray, foam, carbon dioxide.
EXPLOSION

EXPOSURE		PREVENT DISPERSION OF DUST!
Inhalation		Local exhaust.	Fresh air, rest.
Skin		Protective gloves.	Remove contaminated clothes. Rinse and then wash skin with water and soap.
Eyes		Safety spectacles.	First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion		Do not eat, drink, or smoke during work.	Rinse mouth.

SPILLAGE DISPOSAL	PACKAGING & LABELLING
Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting.

EMERGENCY RESPONSE	SAFE STORAGE
NFPA Code: H1; F1; R0	Well closed.

IMPORTANT DATA
Physical State; Appearance WHITE CRYSTALS OR POWDER, WITH CHARACTERISTIC ODOUR. Physical dangers Dust explosion possible if in powder or granular form, mixed with air. 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).	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.

PHYSICAL PROPERTIES	ENVIRONMENTAL DATA
Boiling point (decomposes): 376°C Melting point: 69-72°C Relative density (water = 1): 0.94-0.83 Solubility in water: none Vapour pressure, Pa at 174°C: 133 Flash point: 196°C Auto-ignition temperature: 395°C

NOTES

Health effects of exposure to the substance have not been investigated.
Card has been partially updated in August 2007: see Occupational Exposure Limits.

IPCS
International
Programme on
Chemical Safety

Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2006

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Updated by AS. Approved by GS. Last update: 29.01.2008