ICSC 1205 - ZINC POWDER

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

Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004-2012

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    See Also:
       Toxicological Abbreviations