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NIOSH

ZINC STEARATE

ICSC: 0987

Octadecanoic acid, zinc salt
Zinc distearate
Stearic acid, zinc salt
C36H70O4Zn / Zn(C18H35O2)2
Molecular mass: 632.3
ICSC # 0987 		CAS # 557-05-1
RTECS # ZH5200000
November 04, 2000 Validated

TYPES OF HAZARD/ EXPOSURE

ACUTE HAZARDS/ SYMPTOMS

PREVENTION

FIRST AID/
FIRE FIGHTING

FIRE Combustible. Gives off irritating or toxic fumes (or gases) in a fire.
NO open flames.
Powder, water spray, foam, carbon dioxide.
EXPLOSION Finely dispersed particles form explosive mixtures in air.
Prevent deposition of dust; closed system, dust explosion-proof electrical equipment and lighting. Prevent build-up of electrostatic charges (e.g., by grounding).

EXPOSURE
PREVENT DISPERSION OF DUST!

•INHALATION Cough.
Avoid inhalation of fine dust and mist.
Fresh air, rest. Refer for medical attention.
•SKIN

Rinse skin with plenty of water or shower.
•EYES
Safety goggles.
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. Give one or two glasses of water to drink.

SPILLAGE DISPOSAL

STORAGE

PACKAGING & LABELLING

Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting. Carefully collect remainder, then remove to safe place. (Extra personal protection: P1 filter respirator for inert particles).


ICSC: 0987 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

ZINC STEARATE

ICSC: 0987

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PHYSICAL STATE; APPEARANCE:
WHITE, FINE, SOFT POWDER.

PHYSICAL DANGERS:
Dust explosion possible if in powder or granular form, mixed with air. If dry, it can be charged electrostatically by swirling, pneumatic transport, pouring, etc.

CHEMICAL DANGERS:
The substance decomposes on burning producing irritating and toxic fumes including zinc oxide.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: (stearates) 10 mg/m3; A4 (not classifiable as a human carcinogen); (ACGIH 2008).
MAK not established.
OSHA PEL†: TWA 15 mg/m3 (total) TWA 5 mg/m3 (resp)
NIOSH REL: TWA 10 mg/m3 (total) TWA 5 mg/m3 (resp)
NIOSH IDLH: N.D. See: IDLH INDEX


ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation of its aerosol.

INHALATION RISK:
Evaporation at 20°C is negligible; a nuisance-causing concentration of airborne particles can, however, be reached quickly.

EFFECTS OF SHORT-TERM EXPOSURE:


EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:

PHYSICAL
PROPERTIES

Melting point: 130°C
Density: 1.1
g/cm3
Solubility in water:
none
Flash point: 277°C o.c.
Auto-ignition temperature: 420°C
Explosive limits, vol% in air: 20 g/m3 - ?
Octanol/water partition coefficient as log Pow: 1.2

ENVIRONMENTAL
DATA


N O T E S

NFPA Code: H 0; F 1; R 0;
Card has been partially updated in November 2008: see Occupational Exposure Limits, Ingestion First Aid.

ADDITIONAL INFORMATION



ICSC: 0987 ZINC STEARATE
(C) IPCS, CEC, 1994
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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