Sodium Metabisulfite

Product	Appearance	Use
Sodium Metabisulfite  CAS No. : 7681-57-4 Formula: Na2S2O5	Appearance: white or light yellow crystalline powder. Relative density 1.4,soluble in water, water solution is acidity, soluble in glycerin and slightly soluble in ethanol. It is easy to be decompose and oxided Na2SO4 in air.	mordant of printing and dyeing, dechlorinate of textile after bleaching, Sulphonated agent and reducer of chemical industry and pharmacy; Bleach of paper pulp, bamboo and timber bleach of stapk; Mineral-dressing of nonferrous metals 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.

Specification

Purity (Na2S2O5)	96.5%min
SO2	65%min
Ferrous (Fe)	0.005%max
Clarity	Slight turbid
Heavy metal (Pb)	0.001%max
Arsenic (As)	0.0002%max
Water insolubles	0.05%

Packing:25kg /bag 50kg /bag

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