molecular formula: NaH2PO4·2H2O
molecular weight: 156.01
Character:achromaticity single oblique crystal serial, comparative bulk unit weight (d 20 4), melting point 60 degree, resolvable in water, melting point 60 degree, easy dissolve in water, not in ethanol, when heated to 95 degree, it is dehydrated into anhydride . It will turned into Burnt Sodium acid pyooPhosphate at 190-204 degree, and will be turned into polymerigation into Sodium metaPhosphate at 204-244 degree.
Purpose:It is used as sewage treatment (biological treatment ), dealing agents for boiler water, metal plating liquid, cleaner for the metal face . Additives in food industry , quality improvement agents, additives to heating food. Bacteria culture medium in Medicine Industry, neutralizer , antibiotic neutrient.
Quality Standard:
Index
Industrial
GradeCompany Standard
Food Grade
GB1908-88
Medical
GradeChinese
Codex(1990)
content(NaH2PO4·12H2O)%≥
98
98
98
chloride(CL-) %≤
0.10
0.014
0.01
sulfate( SO42-)% ≤
0.25
0.25
0.05
Fluorid(F-)% ≤
0.005
aluminium salt(Al+3)% ≤
0.01
calcium salt(Ca+2)%≤
0.01
arsenic(AS)%≤
0.0005
0.0005
Heavy Metal(Pb2+)% ≤
0.002
0.001
PH value(1%solution)
4.2～4.6
4.2～4.6
4.1～4.5
Packaging:
Industry Grade: Ethene plastic bag liner, and plastic weaving bag outcoat ,50kg/ bags,Food Grade and Medical Grade: Ethene Plastic bag for food level inside ,and plastic weaving bag outside 25kg/bags.
