... grade/food grade 2.98% 3white or yellow crystal sodium metabisulfite 98% Property: white or light yellow crystal powder ... 190.12CAS NO .: 7681-57-4Appearance : White Free Flowing Fine Crystal or PowderPacking: Packed in 25kg plastic woven bag, 25kg ... Service (We Sell):TCCA,SDIC,sodium hydrosulfite,calcium hypochlorite,hydrofluoric acid,organic matter,sodium sulfide,caustic soda,ammonium bifluoride, ...