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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
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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：
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Test items |
Specification |
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BP2015 |
USP35 |
CP2015 |
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Appearance |
Colorless transparent crystal |
Colorless transparent crystal |
Colorless transparent crystal |
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Assay |
99.0~103.0% |
99.0~105.0% |
99.0~105.0% |
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Appearance of solution |
Conform |
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Conform |
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pH |
9.0~9.6 |
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9.0~9.6 |
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Sulfate |
≤0.005% |
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≤0.04% |
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Carbonate and bicarbonate |
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Conform |
Conform |
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Ammonium |
≤0.001% |
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≤0.001% |
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Iron |
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≤0.003% |
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Calcium |
≤0.01% |
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≤0.01% |
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Magnesium |
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≤0.01% |
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Arsenic |
≤0.0005% |
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≤0.0005% |
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Heavy metals |
≤0.0025% |
≤0.002% |
≤0.001% |
Storage：
Store in a cool, dry and well ventilated place. Keep away from incompatible substances. Keep container closed.
