5000 Metric Ton/Metric Tons per Month Borax pentahydrate Na2B4O7.5H2O for sale
Packaging & Delivery
25 kgs plastic woven bag, 25 mts/20'FCL;1 mt jumbo bag, 25 mts/20'FCL.Borax pentahydrate Na2B4O7.5H2O for sale
Port of China
within 10 days
Borax pentahydrate Na2B4O7.5H2O for sale
The Borax penta is a complex borate mineral that is found in playa lakes and other evaporite deposits. The basic structure of borax contains chains of interlocking BO2(OH) triangles and BO3(OH) tetrahedrons bonded to chains of sodium and water octahedrons. Most old mineral specimens of borax are chalky white due to a chemical reaction from dehydration. They have actually altered (at least on their surface) to the mineral tincalconite, Na2 B4O7-5H2O, with the loss of water. This kind of alteration from one mineral to another leaves the original shape of the crystal. Minerologists refer to this as a pseudomorph, or "fake shape", because the tincalconite has the crystal shape of the predecessing borax.
Borax is directly deposited in arid regions from the evaporation of water in intermittent lakes called playas. The playas form only during rainy seasons due to runoff from adjacent mountains. The runoff is rich in the element boron and is highly concentrated by evaporation in the arid climate. Eventually the concentration is so great that crystals of borax and other boron minerals form.
Borax has a wide variety of uses. It is a component of many detergents, cosmetics, and enamel glazes. It is also used to make buffer solutions in biochemistry, as a fire retardant, as an anti-fungal compound for fiberglass, as an insecticide, as a flux in metallurgy, a texturing agent in cooking, and as a precursor for other boron compounds.
The term borax is used for a number of closely related minerals or chemical compounds that differ in their crystal water content, but usually refers to the decahydrate. Commercially sold borax is usually partially dehydrated.
-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.