|
Acid sodium pyrophosphate
(SAPP)
Moleculer Formula:Na2H2P2O7
Moleculer Weight:221.94
Category:Humectant, Leavening agent.
Code:15.008(GB12493-90)
CAS-No.:7758-16-9
INS-NO.:E450.i
EEC.No.:E450.a
Description: White powder.
Identification: The product yields the reaction characteristic
for pyrophosphates.
Solubility: Soluble in water
Specification: Our SAPP(FG) products meet the requirements
of GB10620-89; our export products meet the requirements of GB 10620-89
and BK Giulini Chemie Standard Quality.
|
Parameter
|
Specification
|
|
GB10620-89
|
BK Guilini Spec.1230-16
|
FCC
|
JSFA-VII
|
Na2H2P2O7,%
 |
95.0
|
95.0
|
95.0
|
95.0
|
| P2O5,%
|
|
63.0-64.5
|
|
|
Insolubles,%  |
1.0
|
0.6
|
1.0
|
0.8
|
| PH(1% Solution) |
3.5-4.5
|
3.8-4.4
|
~4
|
3.8-4.5
|
| Arsenic(As),ppm, |
3
|
1
|
3
|
1.5
|
| Lead(Pb),ppm, |
|
4
|
5
|
|
| Heavy Metals (as Pb),ppm, |
20
|
10
|
20
|
20
|
| Mercury(Hg),ppm, |
|
1
|
|
|
| Cadmium(Cd),ppm, |
|
1
|
|
|
| Fluoride(F),ppm, |
50
|
10
|
50
|
|
| Chloride(Cl),%, |
|
|
|
0.057
|
| Sulphate(SO4),%, |
|
|
|
0.038
|
| Nitrate(NO3),ppm, |
|
50
|
|
|
| Nitrite(NO2),ppm, |
|
1
|
|
|
| Iron(Fe),ppm, |
|
30
|
|
|
|
