Classification: sulphate type: sodium metabisulfite cas no.: 7681-57-4 other names: sodium pyrosulfite mf: na2s2o5 einecs no.: 231-555-9 place of origin: shandong, china (mainland) grade standard: agriculture grade, electron grade, food grade, industrial grade, other purity: 98% appearance: white crystal application: food or industry brand name: blue ribbon model number: br-003 classification: sulphate mf: na2s2o5 grade standard: agriculture, industry, electron, food grade brand name: blue ribbon type: sodium metabisulfite einecs no: 231-555-9 purity: 97%, 97.2%, 98% model number: br-003 cas no: 7681-57-4 appearance: white crystal 1.Color:light yellow or white fine crystal 2.Purity: 97%, 97.2% , 98% 3.Packing:25kg/50kg bag or pallet avaliable.