Two naturally occurring forms: red and white<unk> 
Red is not absorbed well, limited toxicity
Used in manufacture of methamphetamines and also found in the illicit opioid "Krokodil"
Toxicity largely due to inadvertent production of white<unk>  or phosphine gas during manufacture
White<unk>  is VERY toxic
White-yellow waxy substance
Exposure predominantly from use as incendiary munition by armed forces (though occasionally used in manufacture of fertilizers, food additives, and cleaning compounds)
Caustic and cellular poison; ignites spontaneously in air, forms<unk>  pentoxide, which then reacts with water to form phosphoric acid
Damage due to both thermal and chemical burns
Used in manufacture of methamphetamines and also found in the illicit opioid "Krokodil"
Toxicity largely due to inadvertent production of white<unk>  or phosphine gas during manufacture
White-yellow waxy substance
Exposure predominantly from use as incendiary munition by armed forces (though occasionally used in manufacture of fertilizers, food additives, and cleaning compounds)
Caustic and cellular poison; ignites spontaneously in air, forms<unk>  pentoxide, which then reacts with water to form phosphoric acid
Damage due to both thermal and chemical burns
Phosphorus toxicity
Aluminum toxicity
Salicylate toxicity
Antimony toxicity
Organophosphate toxicity
Arsenic toxicity
White phosphorus toxicity
Barium toxicity