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
|
testing result
|
main content(na2s2o5)%
|
≥95.0
|
96.83
|
iron (fe)%
|
≤0.005
|
0.0006
|
heavy metal(pb)%
|
≤0.001
|
0.0002
|
arsenic(as)%
|
≤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