Sodium Metabisulphite(SMB),China price supplier

Sodium Metabisulphite 64% Tech Grade 
Sodium Metabisulphite (As SO2)%-----64Min
Fe%-----------------------------------------0.005Max
Water-insoluble Matter%----------------0.05Max
PH----------------------------------------------4.0-4.6
Heavy Metal(As PB)%-------------------0.001Max
As%----------------------------------------0.0001Max
Sodium Metabisulphite 64% Food Grade 
Sodium Metabisulphite (As SO2)%-----64Min
Fe%------------------------------------------0.005Max
Water-insoluble Matter%----------------0.05Max
PH----------------------------------------------4.0-4.6
Pb%---------------------------------------0.002%Max
As%-------------------------------------0.0002%Max

Appearance: White Powder
Packing: 25kgs net bag, 23mts in the 20’FCL
Usage: Mainly used for manufacturing sulfurous acid and bactericidal, Carrying out vegetable dehydrate, fruit preservation and bleaching.