|PHYSICAL STATE; APPEARANCE: |
STEEL-GREY CRYSTALS OR BLACK TO BROWN AMORPHOUS POWDER
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.
Reacts violently with oxidants , halogens , metal carbonates and metal acetylides causing fire hazard. Reacts violently with metal hexafluorides causing fire and explosion hazard. Reacts on heating with water forming flammable/explosive gas (hydrogen - see ICSC0001) .
OCCUPATIONAL EXPOSURE LIMITS:
TLV not established.
MAK not established.
OSHA PEL†: TWA 15 mg/m3 (total) TWA 5 mg/m3 (resp)
NIOSH REL: TWA 10 mg/m3 (total) TWA 5 mg/m3 (resp)
NIOSH IDLH: N.D. See: IDLH INDEX
|ROUTES OF EXPOSURE: |
The substance can be absorbed into the body by inhalation.
A nuisance-causing concentration of airborne particles can be reached quickly when dispersed.
EFFECTS OF SHORT-TERM EXPOSURE:
May cause mechanical irritation. to the eyes and the respiratory tract.
EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: