Complaint
ITEM | RESULT |
PHOSPHOROUS ACID | 98.55% |
CHLORIDE | 0.01%Max |
PHOSPHATE | 0.1%Max |
SULPHATE | 0.006%Max |
IRON | 0.0015% |
Heavy metials(as Pb) | 0.001%Max |
Pb | 0.18mg/kg |
Cd | 0.005mg/kg |
As | 0.13mg/kg |
Hg | 1mg/kg |
Cr | 0.10mg/kg |
Water-solubility | Excellent |
Phosphite, inorganic compound, soluble in water and alcohol. It is slowly oxidized into orthophosphate in the air and decomposed into orthophosphate and phosphine (highly toxic and explosive) when heated to 180ºC. Phosphite is a dibasic acid, its acidity is slightly stronger than phosphoric acid, it has strong reducing property, easy to reduce silver ions (Ag+) to silver metal (Ag), can reduce sulfuric acid to sulfur dioxide. It has strong hygroscopicity and deliviousness, and is corrosive. Phosphite is mainly used as reducing agent, nylon brightening agent, but also used as phosphite raw materials, pesticide intermediates and organic phosphorus water treatment agents raw materials.
