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Borax Pentahydrate

Etibor-48

Formula: Na2B4O7.5H2O

Chemistry %

Na2O21.29
B2O347.80
 

Volatiles %

H2O30.90

Consists of white crystalline granules or powder. It is mildly alkaline in solution. The advantages of this material vs. the decahydrate form lie in the lower transportation, handling and storage costs of a more concentrated product. 74.6 lb. of this material are equivalent to 100 lb. of decahydrate.

It is stable under ordinary conditions, free-flowing, and easily handled by air or mechanical conveying.

Borax pentahydrate is currently produced at Bandirma Borax Plant in Turkey and at Rio Tinto in California.


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In Bound Links


Pictures
The fluxing power of boron (in borax): The two top clay bars contain 15% hydrous borax. At cone 06 it has melted and drained out of the bars, running down over the others as a glass.


XML for Import into INSIGHT

<?xml version="1.0" encoding="UTF-8"?>
<material name="Borax Pentahydrate" descrip="Etibor-48" searchkey="Borax 5 Mol, Sodium Tetraborate, Borax 5-hydrate" loi="0.00" casnumber="71377-02-1">
<oxides>
<oxide symbol="Na2O" name="Sodium Oxide, Soda" status="U" percent="21.290" tolerance=""/>
<oxide symbol="B2O3" name="Boric Oxide" status="" percent="47.800" tolerance=""/>
</oxides>
<volatiles>
<volatile symbol="H2O" name="Water" percent="30.900" tolerance=""/>
</volatiles>
</material>


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