Borax Anhydrous / Pentahydrate / Decahydrate
Product Description
Borax Pentahydrate
Other Names: BORAX PENTAHYDRATE
CAS No. 12179-04-3
Appearance: White free-flowing granules.
Formula: Na2B4O7.5H2O
1. Brief description:
Product: Borax anhydrous/decahydrate/pentahydrate
Molecular formula: Na2B4O2.10H2O
CAS No.: 1303-96-4
EINECS No.: 215-540-4
Appearance: Colorless translucent crystal or white crystalline powder.
2.Packaging & Delivery
Packaging Detail:
Plastic drums: 25kg, 50kg
Plastic woven bag: 25kg, 1000kg(big bag)
Fiber drums: 25kg, 50kg
3.Delivery Detail: 7-15days
Physical data of boron oxide:
Boron trioxide (chemical formula: B2O3), also known as boron oxide, is the most important oxide of boron. It is a colorless glassy crystal or powder, tasteless and greasy on the surface. It is one of the most difficult substances known to crystallize.
Boric acid can be produced by strong absorption of water in the air and can be reduced to single boron by alkali metal or magnesium and aluminum at high temperature.
Boron oxide soluble in acid, ethanol, hot water, slightly soluble in cold water, combining with several metals has the characteristics of the color of boron glass, with alkali, copper, silver, aluminum, * * *, tin oxide completely immiscible.
Crystalline boron oxide of the density of 2.46 g/cm3, the density of the amorphous boron oxide is 1.80 ~ 1.84 g/cm3, melting point: 557 ºC, 600 ºC, a viscous liquid, solubility: (g / 100 gh2o) : 1.1 (0 ºC), 15.7 (100 ºC), easy to water absorption, moisture absorption is cloudy after the state, is soluble in alcohol.
At low temperature, H3BO3 can be dehydrated to obtain boron trioxide crystals. This crystal containing BO4 tetrahedron structure unit, density 1.805 g · cm - 3, the melting point is 450 ºC (crystal).
Vitreous boron oxide, the density of 1.795 g cm - 3, soften the at higher temperatures when arrived at red high temperature becomes a liquid, the boiling point (ºC and atmospheric pressure) at 1860 ºC. Boron is also directly combined with oxygen to get B2O3.
Solubility: dissolve in water and become boric acid. Soluble in acid and alkali solutions.
Properties and stability of boron oxide:
1. The surface is slimy and tasteless. Soluble in acid, ethanol, hot water, slightly soluble in cold water. It is also not reduced by carbon when heat stabilizes white heat, but alkali metals, magnesium and aluminum can be reduced to simple boron. When heated to 600 ºC, can become great liquid viscosity. It can absorb water strongly in the air to form boric acid.
2,It can be combined with several metal oxides to form boron glass of characteristic color, which can be completely miscible with the oxides of alkali metals, copper, silver, aluminum, *** *, antimony, ratio and bismuth. Poisonous!
Technical specifications of boron oxide:
| Test project |
The inspection results |
| Boron oxide (B2O3) % |
≥98.5 |
| Sulfate (SO4 )% |
≤0.3 |
| Al2O3 % |
≤0.1 |
| Chloride (Cl) % |
≤0.1 |
| Water insoluble matter % |
≤0.2 |
| The average particle size |
40-2000 |
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