|
|
Product Name:
|
Potassium Metabisulfite, Food Grade
|
WCode
|
16-035
|
CAS No.
|
4429-42-9
|
Molecular Formula
|
K2S2O5
|
Molecular Weight
|
222.33
|
|
Sales Specification
|
Appearance
|
White crystal powder
|
Assay (K2S2O5)
|
97.2% Min
|
So2
|
56.0% Min
|
K2S2O3
|
0.1% Max
|
Na
|
2.0% Max
|
CI
|
0.5% Max
|
PH
|
3.8-4.8
|
Heavy metals (As
Pb)
|
10 PPM Max
|
As
|
1 PPM Max
|
Cu
|
1 PPM Max
|
Fe
|
5 PPM Max
|
Hg
|
0.1% PPM Max
|
Pb
|
1 PPM Max
|
Se
|
1 PPM Max
|
Zn
|
1 PPM Max
|
|
Packing:
|
In 25KG plastic woven bag
|
|
|
