roduct name: sodium metabisulfite / sodium metabisulphite
Molecular formula: Na2S2O5
Molecular weight: 190.10
Specification: 25Kg woven bag
Quality guarantee period: 6 months
Uses: Food additive, preservative, decolorizer, reducing agent, rubber coagulator, mineral separation, developing agent, sewage treating agent
Property: white or light yellow powder
Executive standard: GBl983-1998
|
Item
|
Index
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Testing result
|
|
main content(Na2S2O5)%
|
≥95.0
|
96.83
|
|
iron (Fe)%
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≤0.005
|
0.0006
|
|
heavy metal(Pb)%
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≤0.001
|
0.0002
|
|
arsenic(As)%
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≤0.0002
|
0.00008
|
|
water insoluble %
|
≤0.005
|
0.0007
|
|
pH
|
4.0-4.6
|
4.3
|
|
clarity
|
slightly turbid
|
slightly turbid
|
|
chloridion(Cl)ppm
|
|
0.18
|
Storage: please store in cool, dry and ventilated warehouse
Transportation: seperate from acid, oxidizing agent and toxic products; please pay attention to rain, moisture and sunshin