Sodium Metabisulfite Suppliers, Sodium Metabisulfite Manufacturers.
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
Specification For Food Grade and Industry Grade :
Item |
Quality Index
|
|
Food Grade
|
Industry Grade
|
|
Purity ( As Na2S2O5) |
98.0% min
|
96.0% min
|
Sulfur Dioxide( SO2) |
65.0% min
|
65.0% min
|
Arsenic ( As ) |
0.0002% max
|
-
|
Heavy metals ( As Pb ) |
0.0005% max
|
-
|
Selenium (Se ) |
0.0005% max
|
-
|
Iron (Fe) |
0.001% max
|
0.002% max
|
Water insoluble |
0.02% max
|
0.05% max
|
PH value : |
4.0-4.8
|
4.0-4.8
|
Remark : |
Conformed with FCC V and E 223 Standard
|
Item |
Quality Index |
|
Pharmaceutical Grade
|
Photo Grade
|
|
Purity ( As Na2S2O5) |
98.0% min
|
98.0% min
|
Sulfur Dioxide( SO2) |
65.0% min
|
65.0% min
|
Thiosulphate ( As S2O3) : |
0.05 % max
|
0.05% max
|
Chloride ( As CL-) : |
30 ppm max
|
50ppm max
|
Arsenic ( As ) : |
1ppm max
|
1ppm max
|
Lead ( Pb ) : |
1 ppm max
|
2ppm max
|
Copper (Cu) : |
1 ppm max
|
1ppm max
|
Iron (Fe ) : |
5 ppm max
|
5ppm max
|
Mercury (Hg) : |
0.1ppm max
|
1ppm max
|
Chromium (Cr) : |
1 ppm max
|
-
|
Selenium (Se ) : |
1 ppm max
|
5ppm max
|
Zinc (Zn) |
1 ppm max
|
1ppm max
|
Cadmium (Cd ) |
1ppm max
|
-
|
Nickel (Ni) |
1ppm max
|
-
|
Na2SO3 + Na2SO4 |
1.5% max
|
-
|
PH value : |
4.0-4.8
|
4.0-4.8
|
Remark : |
Conformed with USP standard
|
Company: |
Weifang Hainabaichuan International Trading Co.,Ltd. |
Contact: |
Mr Xu |
Phone: |
+86-536-8368676 13963699716 |
Mobile phone: |
+86-13963699716 |
Fax: |
+86-536-8369790 |
E-mail: |
Contact Supplier |
Website:
|
http://www.hnbctrade.com |
Address: |
RM 919,Yinhai Hengji Tower,Dongfeng East Street,Kuiwen District,Weifang City, Shandong,China. |
Zip Code: |
261041 |