339075

Boric anhydride

99.98% 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: 57648934
• NACRES: NA.21

Properties

• grade: for inorganic trace analysis
• Quality Level: 100
• vapor density: >1 (vs air)
• Assay: 99.98% trace metals basis
• form: powder
• mp: 450 °C (lit.)
• 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

Application

Boric anhydride in sulfuric acid may be used as a scrubber to remove the hydrogen fluoride gas formed as a byproduct during the selective reduction of ketones to hydrocarbons using triethylsilane and boron trifluoride. In combination with hydroxyapatite, it may be used to catalyze the vapor-phase Beckmann rearrangement process to form nylon-6.

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