BORAX

Superiority:

Product name: Borax (Na2B4O7•10H2O)
Molecular weight：381.37
License Number：Y20190008770
Executive standard: "Chinese Pharmacopoeia" 2020 edition two
Properties: This product is colorless translucent crystal or white crystalline powder; odorless; weathering; the aqueous solution shows alkaline reaction. This product is easily soluble in boiling water or glycerin, soluble in water, but insoluble in ethanol.
Packing specification: 25kg/bag,

 

This product is sodium tetraborate, containing Na2B4O7.10H2O should be 99.0%~105.0%.

borax

AS RN.:	1303-96-4
EINECS:	215-540-4
Molecular Weight:	381.3721
Molecular Formula:	H20B4Na2O17
Melting Point(℃):	75℃
Water Solubility:	60 g/L (20℃)

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【 Properties 】 This product is colorless translucent crystal or white crystalline powder; Odourless; To be weathered; Aqueous solution shows alkaline reaction.

 

This product is soluble in boiling water or glycerin, dissolved in water, insoluble in ethanol.

 

【 Purpose 】 It is the main mineral raw material for extracting boron and boron compounds. In the metallurgical industry, borax is used for calcination, welding and metal testing. It is also a good flux. In addition, it is also widely used in glass, ceramics, medicine, fertilizer, textile and other industries.

 

[Preparation or source] Borax is one of the most widely distributed borate minerals. It is a chemical deposition product of salt lake, and it is mostly seen in dried boron salt lake.

 

[Others] Hardness 2~2.5. It is easy to lose crystal water in the air and become white powder. When burned, it expands and then melts into transparent glassy pellets.

 

[Identification] The identification reaction between sodium and borate in aqueous solution of this product.

 

[Check] the clarity of the solution Take 0.5g of this product, add 10ml water to dissolve, the solution should be clarified; If turbidity appears, it shall not be thicker than turbidity standard solution No. 2 (Appendix IX B).