sodium metabisulfite industrial and food grade

Commodity: Sodium Metabisulfite
Molecular formula:Na2S2O5
Molecule Weight:190.10
H.S code:28321000
CAS:7681-57-4
Payment: 50% T/T in advance the balance against fax of B/L or L/C at sight for large quantity
Specifications:
Appearance:White Powder
Na2S2O5 97% min
Fe 0.0008% max
water-Insoluble 0.005% max
As 0.0002% max
PH 4.0-4.6
Packing: 25kg/PP bag inside PE bag
Quantity:25MT can be loaded into 1 x 20GP
Delivery time: Within 20 days after receipt of T/T or L/C