15678

Boric anhydride

puriss. p.a., ≥98% (T)

• 동의어(들): Boron trioxide
• 실험식(Hill 표기법): B₂O₃
• CAS Number: 1303-86-2
• Molecular Weight: 69.62
• EC Number: 215-125-8
• MDL number: MFCD00011315
• UNSPSC 코드: 12352300
• PubChem Substance ID: 57647516
• NACRES: NA.21

속성

• vapor density: >1 (vs air)
• Quality Level: 100
• grade: puriss. p.a.
• 분석: ≥98% (T)
• 형태: solid
• 손실: ≤3% loss on ignition, 900 °C
• mp: 450 °C (lit.)
• density: 2.46 g/mL at 25 °C (lit.)
• 음이온 미량물: chloride (Cl^-): ≤20 mg/kg; sulfate (SO₄^2-): ≤50 mg/kg
• 양이온 미량물: Ag: ≤5 mg/kg; Al: ≤50 mg/kg; Ba: ≤5 mg/kg; Bi: ≤5 mg/kg; Ca: ≤10 mg/kg; Cd: ≤5 mg/kg; Co: ≤5 mg/kg; Cr: ≤5 mg/kg; Cu: ≤5 mg/kg; Fe: ≤5 mg/kg; K: ≤30 mg/kg; Mg: ≤20 mg/kg; Mn: ≤5 mg/kg; Mo: ≤5 mg/kg; Na: ≤200 mg/kg; Ni: ≤5 mg/kg; Pb: ≤30 mg/kg; Sr: ≤5 mg/kg; Tl: ≤10 mg/kg; Zn: ≤5 mg/kg
• SMILES string: O=BOB=O
• InChI: 1S/B2O3/c3-1-5-2-4
• InChI key: JKWMSGQKBLHBQQ-UHFFFAOYSA-N

설명

일반 설명

Boric anhydride (Boron trioxide) is a colorless glassy hygroscopic mass having rhombic crystals. Its dissolution in water is a highly exothermic reaction and orthoboric acid is formed. It can be prepared by heating boric acid. It is used as flux in metallurgical processes. It has been reported as an inhibitor of crystallization.

애플리케이션

Boric anhydride can be used as a boron precursor to synthesize:

• Boron carbon nitride nanosheet (BCN) by thermal condensation reaction with urea and melamine.
• Boron-doped reduced graphene oxide (B-rGO) via a chemical vapor deposition method.

It can also be used as an additive along with pinacol to synthesize 4-alkoxy-5-hydroxy-2-pentenoate derivatives by Pd-catalyzed reaction of α, β-unsaturated γ, δ-epoxy esters with various alcohols.

기타 정보

Reagent for the decomposition of silicates by fusion

안전성 정보

• 픽토그램: GHS08
• 신호어: Danger
• 유해 및 위험 성명서: H360FD
• 예방조치 성명서: 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
• 개인 보호 장비: dust mask type N95 (US), Eyeshields, Gloves