Sodium Metabisulfite 95%

Description
Sodium Metabisulfite 95%
Chemical formula: Na2S2O5;

CAS NO: 7681-57-4
EC NO: 231-673-0
Molecule weight : 190.10

MW: 190.1
Physical appearance: White or slightly yellowish crystalline powder;

Test Item	Standard Request.	Results of Test	Individual Result
Appearance	White or light yellowcrystalline powder	Meet the demand	Pass
Content (Na2S2O5%)	≥95%	97.26%	Pass
SO2%	65%	65.55%	Pass
Fe%	≤0.005%	0.003%	Pass
Insoluble substancein water%	≤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

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