Borax Decahydrate 99.5%

Model NO.:CAS No.: 1303-96-4 Appearance:Crystal Powder and Granular Grade Standard:Agriculture Grade,Industrial Grade Classification:Borate Mf:Na2b4o7.10H2O Einecs No.:215-540-4 B2o3:34% Application:Glass, Ceramic,Enamel Density:1.73 g/cm3 (Solid) Boiling Point:1575 °c Molecular Weight:381.37 Trademark:ZF Transport Package:25/Kg Plastic Woven Bag Specification:95% 99% 99.5% Origin:China (Mainland)) HS Code:28402000 Borax decahydrate 99.5%

1.Characters:
CAS No.:1303-96-4 
EINECS No.:215-540-4
Byname: Borax decahydrate 
Appearance :White powder crystal,
Molecular Formula : Na2B4O7.10H20
Molecular Weight : 381.37
2.Usage : 
A. Household products
Borax is used in various household laundry and cleaning products. Borax is also present in some tooth bleaching formulas.
B. Buffer
Sodium borate is used in biochemical and chemical laboratories to make buffers, e.g. for gel electrophoresis of DNA, such as TBE or the newer SB buffer or BBS (borate buffered saline) in coating procedures. Borate buffers (usually at pH 8) are also used as preferential equilibration solution in DMP-based crosslinking reactions.
C. Flux
A mixture of borax and ammonium chloride is used as a flux when welding iron and steel. It lowers the melting point of the unwanted Iron Oxide (scale), allowing it to run off. Borax is also used mixed with water as a flux when soldering jewelry metals such as gold or silver. It allows the molten solder to flow evenly over the joint in question. Borax is also a good flux for 'pre-tinning' tungsten with zinc - making the tungsten soft-solderable.
D.Small-scale mining
Borax is replacing mercury as the preferred method for extracting gold in small-scale mining facilities. The method is called the borax methodand is used in the Philippines.

3.Packing:
-Packed in plastic-lined plastic woven bags of 25 Kg net each, 25MT per 20FCL.
-Packed in plastic-lined plastic woven jumbo bags of 1MT net each, 25MT per 20FCL.
-According to the customer's requirement.

4.Delivery Detail: within 15days after receiving the pre-payment.


 

ITEM	Specification
	Premium grade	First grade
Sodium Borate 10 Hydrous (Na2B4O7@10H2O)%≥	99.5%	95.0%
Sodium carponate (Na2CO3) % ≤	0.1%	0.2%
Insoluble matter in water % ≤	0.04%	0.04%
Sodium Suitate (Na2SO4) % ≤	0.1%	0.2%
Sodium Chloride (NaCl) % ≤	0.03%	0.05%
Iron (Fe) % ≤	0.002%	0.005%

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