Borax Pentahydrate 5 Mol contains 5 fewer moles of water, making it more concentrated (approx. 15% boron), while 10 Mol (approx. 11.4% boron) is generally more soluble.  Borax 5 MOL has a wide range of uses because its more concentrated its used as a flux in ceramics, glass, and metallurgical welding, a detergent builder, water softener, agricultural nutrient, fire retardant, and preservative against fungi.

At BVV we have a range of requests but most notably we see our 5 MOL borax being used in soldering and welding to prevent metal oxidation and promote, for example, the flow of molten metals and solder. 

This product is made in USA. 

Borax Pentahydrate 5 Mol Cerificate of Analysis (Example COA)

Borax Pentahydrate 5 Mol Safety Data Sheet (SDS)