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Sodium metabisulfite (food grade)
Na2S2O5
food additive & flavoring
Molecular Formula Na2S2O5
Molecular Weight 190.12
Characteristics White or slightly yellow crystal powder
Identification Positive
Purity (Na2S2O5 ) ¡Ã 95%
Iron(Fe) ¡Â0.0005%
Water insoluble matter ¡Â0.05%
Heavy metals (as As ) ¡Â0.0002%
Heavy metal (as Pb) ¡Â0.002%
PH value 4.0-4.6
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