PHYSICAL STATE; APPEARANCE:
BLUISH-WHITE OR SILVERY-GREY SOLID IN VARIOUS FORMS. TURNS TARNISHED
ON EXPOSURE TO AIR.
PHYSICAL DANGERS:
Dust explosion possible if in powder or granular form, mixed with air.
CHEMICAL DANGERS:
Upon heating, toxic fumes are formed. Reacts with hot concentrated
nitric acid, boiling concentrated hydrochloric and sulfuric acids. Attacked by pure
water and by weak organic acids in the presence of oxygen.
OCCUPATIONAL EXPOSURE LIMITS (OELs):
TLV: ppm; 0.15 mg/m3 (as TWA) (ACGIH 1993-1994).
|
ROUTES OF EXPOSURE:
The substance can be absorbed into the body 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.
EFFECTS OF SHORT-TERM EXPOSURE:
The substance may cause effects on the gastrointestinal tract, blood,
central nervous system and kidneys , resulting in colics, shock, anemia, kidney damage and
encephalopathy. Exposure may result in death. The effects may be delayed. Medical
observation is indicated.
EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
The substance may have effects on the gastrointestinal tract, nervous
system, blood, kidneys and immune system , resulting in severe lead colics, paralysis of
muscle groups of the upper extremities (forearm, wrist and fingers), anemia, mood and
personality changes, retarded mental development, and irreversible nephropathy. May
cause retarded development of the new-born. Danger of cumulative effect. |