|Physical State; Appearance
WHITE, DELIQUESCENT SOLID IN VARIOUS FORMS, WITH NO ODOUR.
The substance is a strong base, it reacts violently with acid and is corrosive in moist air to metals like zinc, aluminium, tin and lead forming a combustible/explosive gas (hydrogen - see ICSC 0001). Reacts with ammonium salts
to produce ammonia, causing fire hazard. Attacks some forms of plastics, rubber or coatings. Rapidly absorbs carbon dioxide and water from air. Contact with moisture or water may generate heat (see Notes).
Occupational exposure limits
TLV: 2 mg/m³ (ceiling values) (ACGIH 2000). MAK not established.
|Routes of exposure
The substance can be absorbed into the body by inhalation of its aerosol and by ingestion.
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly.
Effects of short-term exposure
Corrosive. The substance is very corrosive to the eyes, the skin and the respiratory tract. Corrosive on ingestion. Inhalation of an aerosol of the substance may cause lung oedema (see Notes).
Effects of long-term or repeated exposure
Repeated or prolonged contact with skin may cause dermatitis.