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                Sodium Metabisulfite


                Property: white or light yellow crystal powder, a strong smell of sulfur dioxide,relative density is 1.4, easy to dissolve in water and glycerin, water solution. It has acidity,and its solubility will become large while raising the temperature and is less to dissolve in ethanol.
                Molecular Formula : Na2S2O5
                Molecule Weight : 190.12
                CAS NO .: 7681-57-4
                Appearance : White Free Flowing Fine Crystal or Powder
                Packing: Packed in 25kg plastic woven bag, 25kg Kraft paper bag, 25kg PE bag, 500kg/1000kg/1100kg/1200kg jumbo bag or as per the buyer's requirement.

                 

                Specification For Food Grade and Industry Grade :

                 

                Item Food Grade Industry Grade
                Purity(As Na2S2O5) ≥98.0% ≥97.0% ≥96.0%
                Sulfur Dioxide(SO2) ≥65.0% ≥65.0% ≥65.0%
                Arsenic(As) ≤0.0002% -- ≤0.0001%
                Heavy Metals(As Pb) ≤0.0005% -- --
                Selenium(Se) ≤0.0005% -- --
                Iron(Fe) ≤0.002% ≤0.005% ≤0.005%
                Water Insoluble ≤0.02% ≤0.05% ≤0.05%
                PH Value 4.0-4.8 4.0-4.8 4.0-4.8
                Remark Conformed with FCCV and E223 Standard
                 
                Specification for Pharmaceutical Grade and Photo Grade  
                Item Pharmaceutical Grade Photo Grade
                PURITY(AS Na2S2O5 ) ≥96.0% ≥96.5%
                SULFUR DIOXIDE(SO2) ≥65.0% ≥65.0%
                CHLORIDE(As NaCL) ≤0.003% ≤0.005%
                ARSENIC(As) ≤0.0001% ≤0.0001%
                HEAVY METALS(As Pb) ≤0.0005% ≤0.0008%
                SELENIUM(Se) ≤0.0001% ≤0.0005%
                IRON(Fe) ≤0.001% ≤0.001%
                Copper(Cu) ≤0.0001% ≤0.0001%
                Nickel(Ni) ≤0.0001% --
                WATER INSOLUBLE ≤0.01% ≤0.01%
                PH VALUE: 4.0-4.8 4.0-4.8



                International Trade:
                Contact person : Ms.Dora , Ms Cherry
                Tel : 0086-536-8256719, 13356706380
                Fax : 0086-536-8256716
                Moible: 0086-13806499031,, 15065607933
                QQ: Dora: 3001383736, Cherry: 3001399245
                E-mail: dora@jiaozichem.com, cherry@jiaozichem.com
                Website : www.thinkanapp.com , www.jiaozichem.com?
                Add:Room 1101&1103,Building D,Zhongtu Mansion,No.6565 East Fushou Street,Weifang City,Shandong,China

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