Sodium metabisulfite
【Alias】: Sodium pyrosulfite; disodium disulphite; Sodium metabisulphite; Sodium disulphite; Sodium pyrosulphite; SODIUM DISULFITE; disodium oxidosulfanesulfonate oxide; Sodium Metabi; Metabisulfite Sodium
【English name】: Sodium Pyrosulfite Sodium Metabisulfite
【Molecular formula】: Na2S2O5
【Molecular weight】: 190.10
【Standard】GB1893-86
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item
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index
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Sodium metabisulfite %
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≥65
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ferrum
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≤0.005
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PH
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4—4.6
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heavy metal in Pb %
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≤0.002
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aresenic(As)%
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≤0.0002
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appearance white or light yellow crystal powder
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【Uses】:
In medical industry, for manufacturing of chloroform, sulfetrone and benzaldehyde; in rubber industry as coagulator; in dyeing industry, as antichlor and scouring assistant; in leather industry, as treating and tanning agent; in chemical industry for manufacturing of hydroxycitronellal, hydroxylamine hydrochloride; as developing agent in photographic industry; as bleaching agent, preservative, anti-oxidant, and etc.
【Physical and chemical properties】:
White or light yellow crystal powder, relative density: 1.4; soluble in water, glycerol and ethyl alcohol
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