Properties: White rhombic crystalline or white crystalline granule, easilysoluble in water, almost insoluble in ethanol, acidic property, appeared in aaqueous solution. Relative density is 1.915 and melting point is 190°C
No
|
standard name
|
anhydrate
NaH2PO4 |
dihydrate
NaH2PO4·2H2O |
||
industrial grade
|
food grade
|
industrial grade
|
food grade
|
||
1
|
Main content %≥
|
98.0
|
98.0
|
98.0
|
98.0
|
2
|
Phosphorus pent-oxide (as P2O5)%≥
|
58.0
|
58.0
|
44.6
|
44.6
|
3
|
PH value1% water solution
|
4.2-4.8
|
4.2-4.8
|
4.2-4.8
|
4.2-4.8
|
4
|
Heavy metalas Pb%≤
|
|
0.001
|
|
0.001
|
5
|
ArsenicAs%≤
|
|
0.0003
|
|
0.0003
|
6
|
Fluorideas F%≤
|
|
0.005
|
|
0.005
|
7
|
Water insoluble %≤
|
0.1
|
0.1
|
0.1
|
0.1
|