China Pure Boric Oxide Used in The Chemical Industry Boron Oxide

boric oxide used in the chemical industry boron oxide
1. Physical and chemical properties

1.1 Molecule formula :B2O3

1.2 Molecule weight : 69.62

1.3 Melting point : 450°C

1.4 Boiling point : 1860°C

1.5 Density : 1.085 gram per ml (Amorphous)

1.6 Solubility : The product can be dissolved in acid, ethanol, hot water, and slightly dissolved in cold water.

1.7 Property:It is a colorless transparent crystal powder. Its surface has greasy feeling its hygroscopicity is strong and it is easy to be hydrolyzed to form boric acid. In high temperature, it can be reduced by alkali metal or magnesium to monocrystal boron, It can be completely mixed dissolved with the oxides of metal, copper, sliver, aluminum, tin, arsenic.

It is used as the flux in decomposition of silicates the mixing agent of semiconductor material,the additives of heatproof glassware and paint refractory. It is also used in production of alloy steel in metallurgical industry. In addition it's used as the catalyst in organic synthesis, the additive of lubricant used in high temperature, can be also used an environmental protection.

2.Safety notes :toxic. It will harm body's health by swallowing, breathing in, eyes contacting, skin contacting. The highest allowable concentration is 15mg/m3 (OSHA) in working place.

3. Storage : It should be stored in a shady, ventilating and dry storehouse.

4.Transportation:Should avoid violent collision, rain drenching, sunning, and can't take mixed transportation with strong oxidants during transporting.

Products indicators

TermIndexBoron oxide %(m/m)≥98Sulfate %(m/m)≤0.7Aluminum oxide %(m/m)≤0.1Choride %(m/m)≤0.1Undissolved matters in water%≤0.02Size(through 180um)%≤85%