Sodium Metabisulfite

2.Usage:
Sodium Metabisulfite (SMBS ) is used as Mordant of printing and dyeing; Dechlorination of textile after bleaching; Sulphonated agent and reducer of chemical industry and pharmacy; Bleach of paper pulp, bamboo and timber bleach of stap; Treatment agent of waste water;Rubber solidifying agent ,Perfume industry is served as hydrocarbon perfume aldehyde;The hide profession employ to do to molt dose and pliable dose and wearproof dose ;The sensitize industry is served as the developing agent reductant and the protection of fixing bath dose and so on; sewage treatment. etc

3.Specifications:
Standard:HG/T2826-2008.
Test Item
Standard Request.
Inspect Result
Inspect Conclusion
Appearance
White or light yellow crystalline powder
Meet the demand
Pass
Content (Na2S2O5%)
≥95%
97.6%
Pass
SO2%
65%
65.55%
Pass
Fe%
≤0.005%
0.003%
Pass
Water Insoluble Matter%
≤0.05%
0.01%
Pass
Heavy metal (Pb)%
≤0.002%
0.001%
Pass
As%
≤0.0002%
<0.0001%
Pass
PH
4.0-4.6
4.3
Pass

4.Packing Details:
Sodium Metabisulfite (SMBS ) will be packed in N.W25kg plastic woven bag within PE liner or Kraft paper bag within PE liner,or 500kg/1000kg/1100kg/1200kg jumbo bag.
20MT-25MT will be loaded in 1*20’fcl container.

5.Storage:
Stored in cool and dry place, avoid moisture and heat. No breakage, No mixed with oxidant and toxic matter. The storage period is 6 month since the production date. It should be transported by clean car, with covering matter, avoid raining.

7681-57-4