... price &Good service 4.Prompt delivery Specification of the Anhydrous Sodium Sulfite1,Molecular formula : Na2SO32,Molecular weight : 126.043 ... 20,000mt Quality standard : Q/320124JM02-2003Index name Premium grade Super gradeFirst gradeSalable productIndustrial gradeSodium sulfite ( Na2SO3 ) , % ≥97 ... -13762006068) Hunan Yueyang Sanxiang Chemical Co.,Ltd. Super grade of Anhydrous Sodium Sulfite(AS097)