sodium metabisulphite

Product Description

Molecular Formula: Na2S2O5 Molecular Weight:**0.*0 CASNO.: ********4 Properties& Applications: White or light yellow crystal powder; It is easily soluble in the water and has strong deliquescence; Mordant of printing and dyeing; Dechloronat of textile after bleaching; Sulphonated agent and reducer of chemical industry and pharmacy; Bleaching agent of paper pulp, bamboo and timber; Bleaching agent of mineral-dressing of nonferrous. Packing&Storage: Packed in *5kg or *0kg plastic woven bags with polyethylene liner; Stored in dry and cool warehouse with packages sealed and away from rain and wetting. Quality Standard: HG/T ***6�***7 (Industry Grade) / GB ***3�*6 (Food Grade) Item Index Industrial Grade Feed Grade Content(as Na2S2O2)%min *6 ������ Content(as SO2)%min 0.2 *5 Iron (Fe)%max 0.**2 0.**5 Water insoluble matter% max 0.*5 0.*5 Arsenic(As)% max 0.**1 0.**2 Heavy metal(as PH)% max 0.**1 0.**2 PH Value ���� **6