| ≥1 piece |
|
Item
|
GB25564-2010
|
HG2919-2000
|
FCC1996
|
|
|
Content(NaH 2 PO 4 )
|
98.0-103.0
|
98.0-103.0
|
98.0-103.0
|
|
|
PH Value
|
4.1-4.7
|
4.2-4.6
|
|
|
|
Water insoluble ≤ %
|
0.2
|
0.2
|
0.2
|
|
|
Heavy metal Pb ≤ %
|
0.001
|
0.001
|
0.001
|
|
|
Pb ≤%
|
0.0004
|
|
|
|
|
Arsenic As ≤ %
|
0.0003
|
0.0003
|
0.0003
|
|
|
Fluorides F ≤ %
|
0.005
|
0.005
|
0.005
|
|
|
Loss on Drying
|
NaH 2 PO 4
|
2.0
|
2.0
|
2.0
|
|
Loss on Drying
|
NaH 2 PO 4
|
2.0
|
2.0
|
2.0
|
|
NaH 2 PO 4 · H 2 O
|
10.0-15.0
|
10.0-15.0
|
10.0-15.0
|
|
|
NaH 2 PO 4 ·2 H 2 O
|
20.0-25.0
|
20.0-25.0
|
20.0-25.0
|
|
|
P 2 O 5
|
NaH 2 PO 4
|
44.6
|
44.6
|
58.0-60.95
|
|
NaH 2 PO 4 ·2 H 2 O
|
58.0
|
58.0
|
(NaH 2 PO 4 )
|