|
Product name |
Sodium tetraborate, decahydrate |
|
Specification |
Pharmaceutical grade (USP,BP,EP,CP) |
|
Molecular formula |
Na2B4O7·10H2O |
|
CAS |
1303-96-4 |
|
H.S. CODE |
2840190000 |
|
Molecular weight |
381.37 |
|
Appearance |
Colorless transparent crystal |
|
Package |
25KG Woven bags or fiber drums |
Property：
Borax is also called coarse borax in chemical composition, it is containing 10 water molecule four boric acid sodium. Its crystal to the plate or columnar crystal together form the brilliant clumps, granular, porous soil block etc, color is white with ash or with light color attune of yellow, blue, green, etc, with vitreous burnish.
Application:
Borax has many USES our familiar as disinfectant, fresh preservative, soft agent, washing eyes water and soap additives, ceramic glaze materials and glass raw materials, etc., in industrial production, borax also plays an important role.
Test standard：GB/T 632-2008
|
Test items |
Specification |
|
|
AR grade |
CP grade |
|
|
Appearance |
Colorless transparent crystal |
Colorless transparent crystal |
|
Assay |
≥99.5% |
≥99.0% |
|
Appearance of solution |
Conform |
Conform |
|
HCl insoluble |
≤0.005% |
≤0.02% |
|
Chloride |
≤0.002% |
≤0.005% |
|
Sulfate |
≤0.01% |
≤0.015% |
|
Phosphate |
≤0.002% |
≤0.005% |
|
Calcium |
≤0.005% |
≤0.02% |
|
Iron |
≤0.0003% |
≤0.0005% |
|
Copper |
≤0.001% |
≤0.002% |
|
Lead |
≤0.001% |
≤0.002% |
Storage：
Store in a cool, dry and well ventilated place. Keep away from incompatible substances. Keep container closed.
