55 lbs Bag – Assay Borax Anhydrous

$73.01

SKU: 17100-55 Category:

Description

55 lbs – Borax Anhydrous – (Sodium Tetraborate Anhydrous)

For use as an assaying flux (or flux thinner) for melting or smelting gold and other precious metals.

Other common names include sodium borate, sodium tetraborate, borax, Calcined Borax, Dehydrated Borax, Pyrobor
Lab / Assay Grade
CAS 1330-43-4
Analysis Specification
Boric Oxide (B2O3) 68.5% min
Equivalent Borax (Na2B4O7) 99.0%
Sodium Oxide (Na2O) 30.5% min
Sulfate as SO4 150 ppm max
Total Iron (Fe) < 50 ppm
US Sieve No. +12 2% max
Sold by the Each (55 lbs) Bag

Additional information

Weight 57 lbs
Dimensions 13 × 19 × 7 cm

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