202851

Boric anhydride

99.999% trace metals basis

• Synonym(s): Boron trioxide
• Empirical Formula (Hill Notation): B₂O₃
• CAS Number: 1303-86-2
• Molecular Weight: 69.62
• EC Number: 215-125-8
• MDL number: MFCD00011315
• UNSPSC Code: 12352300
• eCl@ss: 38120103
• PubChem Substance ID: 24852124
• NACRES: NA.23

Properties

• vapor density: >1 (vs air)
• Quality Level: 100
• Assay: 99.999% trace metals basis
• form: crystals or chunks
• reaction suitability: reagent type: catalyst; core: boron
• mp: 450 °C (lit.)
• solubility: ethanol: soluble at 20 °C
• density: 2.46 g/mL at 25 °C (lit.)
• SMILES string: O=BOB=O
• InChI: 1S/B2O3/c3-1-5-2-4
• InChI key: JKWMSGQKBLHBQQ-UHFFFAOYSA-N

Description

General description

Anhydride can be obtained by heating boric acid at temperatures higher than 160^oC.1

Application

Reducing boron anhydride in the presence of sodium yields amorphous boron. Whereas reducing in the presence of aluminum at high temperatures affords crystalline boron. 1

Packaging

Packaged in poly bottles

Safety Information

• Pictograms: GHS08
• Signal Word: Danger
• Hazard Statements: H360FD
• Precautionary Statements: P201 - P202 - P280 - P308 + P313 - P405 - P501
• Hazard Classifications: Repr. 1B
• Storage Class Code: 6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves