PHYSICAL STATE; APPEARANCE:
LIGHT GREEN CRYSTALS.
PHYSICAL DANGERS:
CHEMICAL DANGERS:
The substance decomposes
on heating and
on contact with acids
producing carbon dioxide (see ICSC # 0021).
Reacts
violently with aniline, hydrogen sulphide, flammable solvents, hydrazine and metal powders, especially zinc, aluminium and magnesium,
causing fire and explosion hazard.
OCCUPATIONAL EXPOSURE LIMITS (OELs):
TLV (as Ni): ppm; 0.05 mg/m3 (ACGIH 1990-1991).
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ROUTES OF EXPOSURE:
The substance can be absorbed into the body
by inhalation of dust particles,
by inhalation of its aerosol, and
by ingestion.
INHALATION RISK:
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly by dispersing.
EFFECTS OF SHORT-TERM EXPOSURE:
The substance
irritates
the eyes and
the respiratory tract.
EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
Repeated or prolonged contact may cause skin sensitization.
Repeated or prolonged inhalation exposure may cause asthma.
This substance is carcinogenic to humans.
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