Blue powder
Merrillite
Zn
Atomic mass: 65.4
(powder)
ICSC # 1205
CAS # 7440-66-6
RTECS # ZG8600000
UN # 1436 (zinc powder or dust)
EC # 030-001-00-1
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Types of Hazard/ Exposure
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Acute Hazards/ Symptoms
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Prevention
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First Aid/
Fire Fighting
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FIRE
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Highly flammable.
Many reactions may cause fire or explosion.
Gives off irritating or toxic fumes (or gases) in a fire.
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NO open flames, NO sparks, and NO smoking.
NO contact with acid(s), base(s) and incompatible substances (see Chemical Dangers).
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Special powder, dry sand, NO other agents.
NO water.
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Explosion
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Risk of fire and explosion on contact with acid(s), base(s), water and incompatible substances.
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Closed system, ventilation, explosion-proof electrical equipment and lighting.
Prevent build-up of electrostatic charges (e.g., by grounding).
Prevent deposition of dust.
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In case of fire: cool drums, etc., by spraying with water but avoid contact of the substance with water.
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Exposure
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PREVENT DISPERSION OF DUST!
STRICT HYGIENE!
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•Inhalation
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Metallic taste and metal fume fever.
Symptoms may be delayed (see Notes).
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Local exhaust.
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Fresh air, rest.
Refer for medical attention.
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•Skin
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Dry skin.
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Protective gloves.
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Rinse and then wash skin with water and soap.
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•Eyes
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Safety spectacles.
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First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
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•Ingestion
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Abdominal pain.
Nausea.
Vomiting.
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Do not eat, drink, or smoke during work.
Wash hands before eating.
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Rinse mouth.
Refer for medical attention.
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Spillage Disposal
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Storage
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Packaging & Labelling
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Extinguish or
remove all ignition sources.
Do NOT wash away into sewer.
Sweep spilled substance into containers.
then remove to safe place.
Personal protection: self-contained breathing apparatus.
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Fireproof.
Separated from
acids,
bases
oxidants
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Dry.
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Airtight.
F symbol
N symbol
R: 15-17-50/53
S: 2-43-46-60-61
UN Hazard Class: 4.3
UN Subsidiary Risks: 4.2
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Important Data
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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.
The substance is a strong reducing agent and reacts violently with oxidants.
Reacts
with
water
and
reacts
violently with
acids
and
bases
forming flammable/explosive gas (hydrogen - see ICSC0001)
.
Reacts violently with sulfur, halogenated hydrocarbons and many other substances
causing fire and explosion hazard.
Occupational Exposure Limits:
TLV not established.
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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 fumes 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.
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Physical
Properties
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Boiling point: 907°C
Melting point: 419°C
Relative density (water = 1): 7.14
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Solubility in water: reaction
Vapour pressure, kPa at 487°C: 0.1
Auto-ignition temperature: 460°C
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Environmental
Data
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N O T E S
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Zinc may contain trace amounts of arsenic, when forming hydrogen, may also form toxic gas arsine (see ICSC 0001 and ICSC 0222).
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.
Transport Emergency Card: TEC (R)-43GWS-II+III
NFPA Code: H0; F1; R1;
Card has been partially updated in February 2009: see Packaging & labelling.
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ADDITIONAL INFORMATION
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ICSC: 1205
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ZINC POWDER
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(C) IPCS, CEC, 1994
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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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