11615

Boric anhydride

granulated, ≥98.0% (T)

• Synonym(s): Boron trioxide
• Empirical Formula (Hill Notation): B₂O₃
• CAS Number: 1303-86-2
• Molecular Weight: 69.62
• PubChem Substance ID: 57646939
• eCl@ss: 38120103
• UNSPSC Code: 12352306
• NACRES: NA.21
• EC Number: 215-125-8
• MDL number: MFCD00011315
• Assay: ≥98.0% (T), 98.0-102.0% (titration)
• Form: solid

Properties

• vapor density: >1 (vs air)
• Quality Segment: 100
• assay: ≥98.0% (T), 98.0-102.0% (titration)
• form: solid
• quality: granulated
• loss: ≤3% loss on ignition, 800 °C
• mp: 450 °C (lit.)
• density: 2.46 g/mL at 25 °C (lit.)
• cation traces: Fe: ≤300 mg/kg
• SMILES string: O=BOB=O
• InChI: 1S/B2O3/c3-1-5-2-4
• InChI key: JKWMSGQKBLHBQQ-UHFFFAOYSA-N

Description

Application

Boric anhydride also referred to as boron trioxide or boron oxide (B₂O₃) has been used for preparing specimens of Bi₄B₂O₉ ceramics. It has also been used for WO₃/B₂O₃/Al system for investigating the impact of Ar gas pressure on the SHS reaction products.

Biochem/physiol Actions

Boric anhydride is an oxide of boron that shows antimicrobial property along with lower aminoalcohols.

Safety Information

• pictograms: GHS08
• signalword: Danger
• hcodes: H360FD
• pcodes: P201 - P202 - P280 - P308 + P313 - P405 - P501
• Hazard Classifications: Repr. 1B
• Storage Class: 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
• ppe: dust mask type N95 (US), Eyeshields, Gloves