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Alkalines
Sodium Metabisulfite Cas 7681-57-4
Specification
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Chemical Analysis
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Component
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Industrial Grade
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Food Grade
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Deying Grade
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High Purity Grade
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Appearance
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White or yellowish crystalline powder
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Content (Na2S2O5）
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96.5%min
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97.0%min
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96.5%min
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98%min
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Water soluble matter
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0.05%max
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0.03%max
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0.05%max
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0.02%max
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Iron content (Fe)
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0.005%max
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0.003%max
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0.005%max
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0.002%max
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Arsenic (As)
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0.0001%max
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0.0001%max
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0.0001%max
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0.0001%amx
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Pb
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0.0005%max
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0.0002%max
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-
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0.0003%max
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