Properties: White crystal powder, easily soluble in water, slightly soluble in alcohol, insoluble in ketone.

Application: Mainly used as a supplement of phosphorus and nitrogen in animal feed.

Properties: Appearance is white granular crystal, easily soluble in water, insoluble in organic solvent. The melting point is 117.3 ° C, and the aqueous solution is strongly acidic.

Properties: White crystal or powder, easily soluble in water, insoluble in ethanol, slightly soluble in chloroform.

Properties: Colorless transparent crystal, stable in air, soluble in water (22.6g/100ml), insoluble in ethanol, deliquescence. When heated to 400 ℃, it melts into a transparent liquid, and after cooling, it solidifies into an opaque glassy potassium metaphosphate.

Properties: Appearance is white crystal or amorphous white powder, easily soluble in water, slightly alkaline in aqueous solution, slightly soluble in alcohol, hygroscopic, self-dissolving at high temperature. Anhydrous dipotassium hydrogen phosphate is converted into potassium pyrophosphate when heated to 204°C.

Properties: Dipotassium hydrogen phosphate trihydrate is white crystal with water. Anhydrous is white powder. Easily soluble in water, the aqueous solution is slightly alkaline, slightly soluble in alcohol, hygroscopic, and self-dissolving at high temperature. Anhydrous dipotassium hydrogen phosphate is converted into potassium pyrophosphate when heated to 204°C.

Properties: Colorless transparent crystal, stable in air, soluble in water (22.6g/100ml), insoluble in ethanol, deliquescence. When heated to 400 ℃, it melts into a transparent liquid, and after cooling, it solidifies into an opaque glassy potassium metaphosphate.

Properties: White powder or block, the apparent specific gravity is above 0.3, the melting point is 1100 ° C, soluble in water, insoluble in alcohol, the aqueous solution is alkaline. It has high solubility in water (187 grams per 100 grams of water at 25°C), and has a slight deliquescence.

Properties: White granular crystal, relative density 1.619, melting point 155℃, easily soluble in water, insoluble in alcohol, PH value of 1% aqueous solution is 8.0, gradually loses ammonia in the air to form ammonium dihydrogen phosphate.

Properties: White granular crystal, relative density 1.803, melting point 190℃, easily soluble in water, slightly soluble in alcohol, insoluble in ketone, PH value of 1% aqueous solution is 4.5.

Properties: colorless transparent viscous liquid or orthorhombic crystal, odorless, very sour taste, melting point 42.35 ℃, heated to 300 ℃ to become metaphosphoric acid, relative density 1.834, easily soluble in water, soluble in ethanol, can stimulate the skin Causes inflammation, destroys body tissue, erodes when heated in porcelain, and is hygroscopic.