Sodium Metabisulfite

Molecular formula: Na2S2O5

1. Industrial grade sodium metabisulfite
Quality standard: HG/T2826-1997 
Item: high-rate, first-rate
Content (based on Na2S2O5): ≥96.0% / 94.0%
Iron < (Fe): ≤0.005% / 0.010%
Insoluble substance in water: ≤0.05 / 0.05 
Arsenic (based on As): ≤0.0001%

2. Food grade sodium metabisulfite
Quality standard: GB1893-1998
Item: Ce index  
Main content (base on Na2S2O5): ≥95.0%; (based on SO2): ≥65.0%
Iron content (based on Fe): ≤0.005%
Clarity turbid 
Content of heavy metal (based on Pb): ≥0.001%
Arsenic content (based on As): ≤0.0002%

Main use:
Bleaching agent (such as candy, cakes, dried slices of tender bamboo shoots)
Loosening agent (such as bread, biscuits) preservative, disinfector (such as jam and can)
Antioxidant, anti-staling agent (such as seafood, fruits, vegetables)

Packing:
Polypropylene woven bag lined with polyethylene plastic bag
25, 50, 1,000kg/bag