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Boron oxide

Boron oxide Suppliers list
Company Name: Henan Tianfu Chemical Co.,Ltd.
Tel: 0371-55170693
Products Intro: Product Name:1303-86-2
Purity:0.99 Package:25KG,5KG;1KG;500G
Company Name: Hefei TNJ Chemical Industry Co.,Ltd.
Tel: +86-0551-65418679
Products Intro: Product Name:Boron oxide
Purity:99.5 Package:1ASSAYS;1USD
Company Name: Shanghai Zheyan Biotech Co., Ltd.
Tel: 18017610038
Products Intro: Product Name:Boron oxide
Purity:AR,98% Package:500g
Tel: +86 532 83657313
Products Intro: Product Name:Boron Oxide;Boron Trioxide,Boric anhydride,Boron anhydrous,Boric Oxide
Purity:99.99% Package:1KG;25KG
Company Name: Hubei Jusheng Technology Co.,Ltd.
Tel: 86-18871470254
Products Intro: Product Name:diboron trioxide
Purity:99% Package:5KG;1KG

Boron oxide manufacturers

  • Boron oxide
  • $5.00 / KG
  • 2021-11-08
  • CAS:1303-86-2
  • Min. Order: 1KG
  • Purity: 99%
  • Supply Ability: 30 Tons
  • Boron oxide
  • $15.00-10.00 / KG
  • 2021-08-12
  • CAS:1303-86-2
  • Min. Order: 1KG
  • Purity: 99%+ HPLC
  • Supply Ability: Monthly supply of 1 ton
  • Boron oxide
  • $10.00 / KG
  • 2021-08-03
  • CAS:1303-86-2
  • Min. Order: 1KG
  • Purity: 99%
  • Supply Ability: 10 mt
Boron oxide Basic information
Product Name:Boron oxide
Synonyms:B2O3;B-O;Boria;boricacid(hbo2),anhydride;boricoxide(b2o3);Boron oxide (B2O3);BORON TRIOXIDE;BORON OXIDE
Product Categories:Inorganics;Industrial/Fine Chemicals;metal oxide;Fertilizer
Mol File:1303-86-2.mol
Boron oxide Structure
Boron oxide Chemical Properties
Melting point 450 °C(lit.)
Boiling point 1860 °C
density 2.46 g/mL at 25 °C(lit.)
vapor density >1 (vs air)
Fp 1860°C
storage temp. Inert atmosphere,Room Temperature
solubility 36g/l
form pellets
color White
Specific Gravity2.46 +/- 0.01
PH4 (10g/l, H2O, 25℃)
Water Solubility 36 g/L (25 ºC)
Sensitive Hygroscopic
Merck 14,1337
Stability:Stable. Moisture sensitive. Incompatible with water.
CAS DataBase Reference1303-86-2(CAS DataBase Reference)
NIST Chemistry ReferenceDiboron trioxide(1303-86-2)
EPA Substance Registry SystemBoric oxide (1303-86-2)
Safety Information
Hazard Codes Xi,T
Risk Statements 36/37/38-61-60
Safety Statements 26-37/39-45-53
WGK Germany 1
RTECS ED7900000
HS Code 28100010
Hazardous Substances Data1303-86-2(Hazardous Substances Data)
ToxicityLD50 orally in Rabbit: 3150 mg/kg
MSDS Information
Boron oxide English
SigmaAldrich English
ACROS English
ALFA English
Boron oxide Usage And Synthesis
Chemical Propertieswhite powder or glassy flakes
Chemical PropertiesBoron oxide is a noncombustible, colorless, semitransparent lumps or hard, white, odorless crystals, with slightly bitter taste.
Boron oxide
Physical propertiesColorless glassy solid or vitreous crystal; hexagonal crystal system; slightly bitter taste; hygroscopic; density 2.55 g/cm3; melts at 450°C; vaporizes at 1,500°C; slightly soluble in cold water (3.3%), soluble in alcohol and boiling water (20%).
UsesA saturated solution of H3BO3 contains about 2% of the compound at 0 C, increasing to about 39% at 100 C. The compound also is soluble in alcohol. In preparations, solutions of boric acid are nonirritating and slightly astringent with antiseptic properties. Although no longer used as a preservative for meats, boric acid finds extensive use in mouthwashes, nasal sprays, and eye-hygiene formulations. Boric acid (sometimes with borax) is used as a fire-retardant. A commercial preparation of this type (Minalith) consists of diammonium phosphate, ammonium sulfate, sodium tetraborate, and boric acid. The tanning industry uses boric acid in the deliming of skins where calcium borates, soluble in H2O, are formed. As sold commercially, boric acid is B3O3·3H2O, prepared by adding HCl or H2SO4 to a solution of borax.
UsesIn preparation of fluxes; component of enamels and glass; catalyst in organic reaction
UsesBoron oxide was used as the intermediate glass layer at a bonding temperature of 450°C. In preparation of fluxes; component of enamels and glass; catalyst in organic reaction.
In metallurgy; in analysis of silicates to determine SiO2 and alkalies; in blowpipe analysis.
PreparationBoric oxide is produced by treating borax with sulfuric acid in a fusion furnace. At temperatures above 750°C, the molten boric acid layer separates out from sodium sulfate. It then is decanted, cooled, and obtained in 96-97% purity. Boric acid above 99% purity may be obtained by fusing granular material.
Boric oxide may be prepared by heating boric acid.
2B(OH)3 → B2O3 + 3H2O
Production MethodsBoric oxide is produced by thermal fusion of boric acid, forming a clear transparent glass-like solid that is subsequently ground into white vitreous granules. It is used principally in the manufacture of glass and vitreous products.
General DescriptionColorless, semi-transparent glassy lumps or hard white odorless crystals. Mp 450°C; bp: 1860°C. Density: 2.46 g cm-3. Moderately soluble in water. Used as an insecticide; as the starting material for the synthesis of other boron compounds; as a fluxing agent in enamels and glasses; and in mixture with 2-6% boron nitride, as a bonding agent in the hot isostatic pressing of boron nitride ceramics.
Reactivity ProfileBoron oxide is non-combustible. Of generally low chemical reactivity. Reacts exothermically but slowly with water to form boric acid, a weak acid. Reacts exothermically with strong bases. May react with strong reducing agents such as metal hydrides, metal alkyls to generate flammable or explosive gases. May react violently on contact with bromine pentafluoride. Corrosive to metals in the presence of air.
HazardEye and upper respiratory tract irritant.
Health HazardBoron oxide is an eye and respiratory irritant. In 113 workers exposed to boron oxide and boric acid dusts, there were statistically significant increases in symptoms of eye irrita- tion; dryness of the mouth, nose, and throat; sore throat; and productive cough compared with controls. The mean exposure level was 4.1mg/m3 , with a range of 1.2–8.5mg/m3 . Exposures may occasionally have exceeded 10 mg/m3 . Because of mixed exposures, the study does not indicate whether boron oxide or boric acid dust is more important in causing symp- toms, nor does it indicate the minimum duration of exposure necessary to produce symptoms.
Excessive absorption of boron oxide may lead to cardiovascular collapse, alterations in temperature regulation, and coma.
Potential ExposureBoron oxide is used in glass manufacture and the production of other boron compounds. It is used in fluxes, enamels, drying agents, and as a catalyst.
ShippingUN3077 Environmentally hazardous substances, solid, n.o.s., Hazard class: 9; Labels: 9—Miscellaneous hazardous material, Technical Name Required.
IncompatibilitiesIncompatible with bromine pentafluoride, calcium oxide. Reacts slowly with water, forming boric acid. Reacts exothermically with alkaline material and strong bases. May react with strong reducing agents such as metal hydrides, metal alkyls to generate flammable or explosive gases. May react violently on contact with bromine pentafluoride. Corrosive to metals in the presence of air.
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