Zinc stearate

  • Octadecanoic acid, zinc salt
Formula
Zn(C18H35O2)2
Structure
Description
White powder free from grit. Faint odor.
Uses
Dusting powder.

Registry Numbers and Inventories.
CAS
557-05-1
EC (EINECS/ELINCS)
209-151-9
RTECS
ZH5200000
RTECS class
Other
Merck
12,10292
Beilstein/Gmelin
3919706
Beilstein Reference
4-02-00-01206
EPA OPP
77002
Swiss Giftliste 1
G-3077
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
2C18H35O2*Zn
Formula mass
632.34
Melting point, °C
140
Density
1.095 g/cm3 (20 C)
Solubility in water
Insoluble

Hazards and Protection.
Storage
Keep away from heat and flame. Store in a cool, dry place. Keep containers tightly closed.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with skin and eyes. Avoid ingestion and inhalation.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.
Small spills/leaks
Clean up spills immediately, using the appropriate protective equipment. Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal. Avoid generating dusty conditions. Remove all sources of ignition. Provide ventilation.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Dilute acids, oxidizing materials.
Decomposition
Carbon monoxide, carbon dioxide, toxic fumes of zinc oxide.

Fire.
Flash Point,°C
355 (open cup)
Autoignition, °C
420
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Dusts at sufficient concentrations can form explosive mixtures with air. Material will burn in a fire. To extinguish fire, use water, dry chemical, chemical foam, or alcohol-resistant foam.
Health
0
 
Flammability
1
 
 
Reactivity
0
 

Health.
Exposure limit(s)
TLV: ppm; 10 mg/m3 (ACGIH 1992-1993). OSHA PEL: TWA 15 mg/m3 (total) TWA 5 mg/m3 (resp) NIOSH REL: TWA 10 mg/m3 (total) TWA 5 mg/m3 (resp)
Poison_Class
4
Exposure effects
   Ingestion
Harmful if swallowed. May cause gastrointestinal irritation with nausea, vomiting and diarrhea.
   Inhalation
Inhalation of fumes may cause metal fume fever, which is characterized by flu-like symptoms with metallic taste, fever, chills, cough, weakness, chest pain, muscle pain and increased white blood cell count. May cause respiratory tract irritation.
   Skin
Dust may cause mechanical irritation.
   Eyes
Dust may cause mechanical irritation.

First aid
 
   Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid if irritation or symptoms occur.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid if cough or other symptoms appear.
   Skin
Get medical aid if irritation develops or persists. Flush skin with plenty of soap and water.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Transport.