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ZINC POWDER
(powder)
ICSC: 1205
Peer-Review Status: 24.10.1994 Validated
Blue powder
Merrillite 
CAS #: 7440-66-6 RTECS #: ZG8600000
UN #: 1436 (zinc powder or dust)
EC #: 030-001-00-1
EINECS #: 231-175-3
    Formula: Zn
Atomic mass: 65.4

TYPES OF
HAZARD /
EXPOSURE
ACUTE HAZARDS / SYMPTOMS      PREVENTION      FIRST AID / FIRE FIGHTING
FIRE Highly flammable. Many reactions may cause fire or explosion. Gives off irritating or toxic fumes (or gases) in a fire.  NO open flames, NO sparks and NO smoking. NO contact with acids, bases or incompatible substances. See Chemical Dangers.  Use special powder, dry sand. NO other agents. NO water. 
EXPLOSION Risk of fire and explosion on contact with acids, bases, water or incompatible substances. See Chemical Dangers.  Closed system, ventilation, explosion-proof electrical equipment and lighting. Prevent build-up of electrostatic charges (e.g., by grounding). Prevent deposition of dust.  In case of fire: keep drums, etc., cool by spraying with water. NO direct contact with water. 
 
EXPOSURE   PREVENT DISPERSION OF DUST! STRICT HYGIENE!   
Inhalation Metallic taste. Fever. Symptoms may be delayed. See Notes.  Use local exhaust.  Fresh air, rest. Refer for medical attention. 
Skin Dry skin.  Protective gloves.  Rinse and then wash skin with water and soap. 
Eyes   Wear safety spectacles.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion Abdominal pain. Nausea. Vomiting.  Do not eat, drink, or smoke during work. Wash hands before eating.  Rinse mouth. Refer for medical attention . 

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Remove all ignition sources. Personal protection: self-contained breathing apparatus. Do NOT wash away into sewer. Sweep spilled substance into covered containers. Then store and dispose of according to local regulations.  Airtight. 
EC Classification
Symbol: F, N; R: 15-17-50/53; S: (2)-43-46-60-61 
UN Classification
UN Hazard Class: 4.3; UN Subsidiary Risks: 4.2 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
Transport Emergency Card: TEC (R)-43GWS-II+III.
NFPA Code: H0; F1; R1. 
Fireproof. Separated from acids, bases and oxidants. Dry. 

IMPORTANT DATA
Physical State; Appearance
ODOURLESS GREY-TO-BLUE 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
Upon heating, toxic fumes are formed. Decomposes on heating. This produces toxic fumes. The substance is a strong reducing agent. It reacts violently with oxidants. Reacts with water. Reacts violently with acids and bases. This produces flammable/explosive gas (hydrogen - see ICSC 0001). Reacts violently with sulfur, halogenated hydrocarbons and many other substances. This generates fire and explosion hazard. 

Occupational exposure limits
TLV (NOT-ESTABLISHED):. 

Routes of exposure
The substance can be absorbed into the body by inhalation and by ingestion. 

Inhalation risk
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed. 

Effects of short-term exposure
Inhalation of fume may cause metal fume fever. The effects may be delayed. 

Effects of long-term or repeated exposure
Repeated or prolonged contact with skin may cause dermatitis. 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Boiling point: 907°C
Melting point: 419°C
Relative density (water = 1): 7.14
Solubility in water: reaction
Vapour pressure, kPa at 487°C: 0.1
Auto-ignition temperature: 460°C  
 

NOTES
Zinc may contain trace amounts of arsenic, when forming hydrogen, may also form toxic gas arsine (see ICSC0001 and ICSC0222).
Reacts violently with fire extinguishing agents such as water, halons, foam and carbon dioxide.
The symptoms of metal fume fever do not become manifest until several hours later.
Rinse contaminated clothes (fire hazard) with plenty of water.
Card has been partly updated in April 2005. See sections EU classification, Emergency Response.
Card has been partially updated in February 2009: see Packaging & labelling. 

ADDITIONAL INFORMATION
 

IPCS
International
Programme on
Chemical Safety
WHO ILO EC Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004-2012
LEGAL NOTICE Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible for the use which might be made of this information.


    See Also:
       Toxicological Abbreviations