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Chemical Name:  Dipotassium Phosphate / Dipotassium phosphate Trihydrate
Formula: K2HPO4, K2HPO4· 3H2O
Molecular weight: Anhydrous: 174.18; Trihydrate : 228.184.
Specificity: It's colorless or white square crystal granule, easily deliquescent, alkaline, insoluble in ethanol.
PH value is about 9 in 1% aqueous solution.
Quality Standard:

Name of Index GB 25561-2010 FCC-1997
Assay (dry)≥% 98.0 98.0
As≤% 0.0003 0.0003
P2O5Assay≥% 39.94(Anhydrous) 39.94(Anhydrous)
30.52(Trihydrate) 30.52(Trihydrate)
K2O Assay≥% 52.94(Anhydrous) 52.94(Anhydrous)
40.4(Trihydrate) 40.4(Trihydrate)
Fluoride(F)≤% 0.001 0.001
Heavy Metal(Pb)≤% 0.001 0.0015
Water insoluble matter≤% 0.2 0.2
Pb≤% 0.0002 0.0002
Loss on Dry% ≤2.0 (Anhydrous) ≤2.0 (Anhydrous)
20.0-30.0 (Trihydrate) 20.0-30.0 (Trihydrate)
pH value 9.0+0.4 ---

Usage: In food industry, it is used as buffering agent, chelating agent, yeast food, emulsifying salt,
synergistic agent of anti-oxidation.
Packing: It is packed with polyethylene bag as inner layer, and a compound plastic woven bag as
the outer layer. The net weight of each bag is 25kg. 
Storage and Transport: It should be stored in a dry and ventilating warehouse. Be cautious to keep
away from moisture and hot; unloaded with care, so as to avoid the damage. Furthermore, it should
be stored separately from poisonous substance.