Borax 5 Mol (Sodium Tetraborate Pentahydrate V-BOR®)
WC Code: 02-010-1
CAS No.: 12179-04-3
Molecular Formula: Na2B4O7.5H2O
Formula Weight: 291.35 g/mol
Applications
Sodium Tetraborate Pentahydrate also known as Borax 5 mol VBOR ® is a more concentrated form of sodium borate because it contains less bound water (5 molecules). It is found in detergents, and personal care products. It is used to make glass, ceramics, and insulation. It is a flux in metal recovery, wire drawing and refractories. It is also a corrosion inhibitor in automotive antifreeze, and a preservative in casein-based adhesives. It is also used to neutralize skins/hides in leather tanning, corrects boron deficiency in plants, reduces melting temperature in glass process, is a fire retardant in cellulose insulation, and is used to make a bleaching agent for home laundry.
Functions
Buffer
Corrosion Inhibitor
Flame retardant
peptizing agent
Water Softener
Sales Specifications
Appearance: White, granular, crystalline solid
Grades: Technical Standard
Pentahydrate Borax (Na2B4O7.5H2O): 101.5%-103.5%
Anhydrous Borax (Na2B4O7): 70.8%-71.5%
Boric Oxide (B2O3): 48.5%-49.5%
Sodium Oxide (Na2O): 21.6%-22.0%
Water of Crystallization (H2O): 28.5%-29.9%
Chloride (Cl): 600ppm
Sulfate (Na2SO4): 300ppm
Iron (Fe): 15ppm
pH in Water at 20°C(68°F)
Weight 0.1%: pH 9.25
Weight 0.5%: pH 9.24
Weight 1.0%: pH 9.24
Weight 2.0%: pH 9.25
Weight 3.0%: pH 9.29
Weight 3.74%(Saturation): pH 9.30
Physical And Chemical Properties
Specific Gravity 25°C: 1.815
Specific Heat 25°C: 96.3 cal/deg-mol
Heat of Solution (Absorbed) 25°C: -13.03 Kcal/g-mol or -51.71 Btu
Heat of Formation: -1147.8 Kcal/g-mol or -4555.0 Btu
Packing
55.12 lb bag, 42 bags per pallet
