Sodium Metabisulfite

CAS No. 7681-57-4.

EINECS NO. 231-673-0

Appearance: White or light yellow crystalline powder

Content (Na2S2O5%): 95% Min

SO2: 65% Min

Fe: 0.005% Max

Water Insoluble Matter: 0.05% Max

Heavy metal (Pb): 0.002% Max

As: 0.0002% Max

PH value: 4.0-4.6

Packing: 25/500/1000/1100kgs bag.