Anhydrous Sodium Sulfite

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Test items Food-grade High-purity grade Industrial-grade
Sodium sulfite (Na2SO3) % ≥ 97 98 97
Iron Fe % ≤ 0.001 0.001 0.003
Free Alkali (Na2CO3) % ≤ 0.4 0.05 0.1
Lead Pb % ≤ 0.0005 0.0001 --
Arsenic As % ≤ 0.0002 0.0001 --
Definition Clarification Clarification --
Water insoluble matter % ≤ -- -- 0.02
Sulfate (Na2SO4 ) % ≤ -- -- 2.5
Chloride (NaCl) % ≤ -- -- 0.1
Packaging: 25kg、50kg、1000kg Weaving.

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