Dipotassium hydrogen phosphate trihydrate, which is colorless or white crystal or block; It is hygroscopic, easily soluble in water and almost insoluble in ethanol.
| Specification | GB 1886.334-2021 | FCC VII | |
| Content(On dry basis), w/% ≥ | 98.0 | 98.0 | |
| Arsenic(As),mg/kg ≤ | 3.0 | 3.0 | |
| Fluoride(as F),mg/kg ≤ | 10.0 | 10.0 | |
| Heavy metal(as Pb),mg/kg ≤ | 10 | ——— | |
| Insoluble substances(On dry basis),w/%≤ | 0.2 | 0.2 | |
| Lead (Pb),mg/kg ≤ | 2.0 | 2.0 | |
| Loss on drying,w/% | K2HPO4 ≤ | 2.0 | 2.0 |
| Loss on drying,w/% | K2HPO4·H2O | 22.0-26.0 | ——— |
| pH value (10g/L Solution ) | 9.0±0.4 | ——— | |
1、Chemical Name: Dipotassium Phosphate
2、Molecular Formula: K2HPO4 ; K2HPO4· 3H2O
3、Molecular Weight: Anhydrous:174.18 ; Trihydrate:228.18
4、CAS: Anhydrous:7758-11-4 ; Trihydrate:16788-57-1
5、Character: It’s colorless or white square crystal granule or powder, easily deliquescent, alkaline, insoluble in ethanol. pH value is about 9 in 1% aqueous solution.
6、Usage: In food industry, it is used as buffering agent, chelating agent, yeast food, emulsifying salt, synergistic agent of anti-oxidation.
7、Packing: It is packed with a polyethylene bag as the inner layer, and a compound plastic woven bag as outer layer. The net weight of each bag is 25kg.
8、Storage & Transportation: It should be stored in a dry and ventilative warehouse, kept away from heat and moisture during transportation, unloaded with care so as to avoid damage. Furthermore, it must be stored separately from poisonous substances.
