Properties: Colourless or white crystal, relative density is 1.62, melting point is 73.3 to 76.7 centigrade. It is soluble in water and insoluble in ethanol and carbon bisulfide, its aqueous solution shows alkaline and harms to skin. Heat it up to 100 centigrade, loses 11 crystal waters and becomes sodium phosphate monohydrate. Keep on heating up to 212 centigrade, it becomes sodium phosphate anhydrous . It is easy to airslake in the dry air.
|Appearance||White or colorless crystal powder|
|PH value of 1% solution||%≥||11.5-12.5|
|Arsenic, as As||%≤||0.0003|
|Fluoride , as F||%≤||0.005|
|Heavy metal, as Pb||%≤||0.001|
|Lead, as Pb||%≤||0.0004|
|Loss on drying||%≤||45-57
Food, Emulsifier for processed cheese.Baking agent for cereals. Buffer for processed foods.
Water Treatment:To precipitate hardness salts and to adjust alkalinityin boiler water. Corrosion control.