Appendix A
A-4 33480D01.DOC
4. FIRE AND EXPLOSION HAZARD DATA
Flash Point: N/A
Test Method Used: ___
Auto-ignition Temperature: N/A
Hard cemented carbide product is not a fire hazard. Dusts generated in grinding operations may ignite if allowed to
accumulate and are subjected to an ignition source.
Flammable Limits: N/A LEL:
UEL:
Extinguishing Media: For powder fires, smother with dry sand, dry dolomite, ABC type fire extinguisher or flood with
water.
Special Fire Fighting Procedures: For a powder fire confined to a small area, use a respirator approved for toxic dusts
and fumes. For a large fire, fire fighters should use self-contained breathing apparatus.
Unusual Fire and Explosion Hazards: Dusts may present a fire or explosion hazard when exposed to high temperature
or ignition sources. However, this is not expected to be a problem under normal handling conditions.
Hazardous Combustion Products: May generate toxic fumes when heated.
5. HEALTH HAZARD DATA
Routes of Exposure: X Skin Contact N/A Skin Absorption X Eye Contact
X
Acute Inhalation X Chronic Inhalation X Ingestion
Effects of Exposure: X
Carcinogenicity X NTP X IARC
N/A
Other X Sensitization N/A Teratogenicity
N/A
Mutagenicity N/A Reproductive Toxicity
N/A
Synergistic Materials
Inhalation - Dusts or mists can cause irritation of the nose and throat. Inhalation can result in an allergic reaction in
individuals previously sensitized, causing difficult breathing. Dusts or mists also have the potential for causing transient
or permanent respiratory disease, including occupational asthma and interstitial fibrosis in a small percentage of exposed
individuals. Symptoms include productive cough, wheezing, shortness of breath, chest tightness and weight loss. Nickel
is suspected of causing nasal and lung cancer. Symptoms include pain, bleeding, nasal obstruction, vision impairment,
weight loss and voice resonance change.
Skin Contact - Can cause irritation or an allergic skin rash due to chromium, cobalt, or nickel sensitization in people
susceptible to allergic reactions.
Eye Contact - Can cause irritation or conjunctivitis.
Ingestion - Ingestion of large amounts of cobalt over a period of time has the potential for causing blood, heart, and
other organ problems. Current scientific information indicates no adverse effects are likely from ingestion of small
amounts of nickel dust generated from these products.
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