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339075

Supelco

Boric anhydride

99.98% trace metals basis

Synonym(s):
Boron trioxide
Empirical Formula (Hill Notation):
B2O3
CAS Number:
Molecular Weight:
69.62
EC Number:
MDL number:
eCl@ss:
38120103
PubChem Substance ID:
NACRES:
NA.21

grade

for inorganic trace analysis

Quality Level

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

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This Item
1161515678202851
Boric anhydride 99.98% trace metals basis

Supelco

339075

Boric anhydride

Boric anhydride granulated, ≥98.0% (T)

Sigma-Aldrich

11615

Boric anhydride

Boric anhydride puriss. p.a., ≥98% (T)

Sigma-Aldrich

15678

Boric anhydride

Boric anhydride 99.999% trace metals basis

Sigma-Aldrich

202851

Boric anhydride

vapor density

>1 (vs air)

vapor density

>1 (vs air)

vapor density

>1 (vs air)

vapor density

>1 (vs air)

assay

99.98% trace metals basis

assay

≥98.0% (T), 98.0-102.0% (titration)

assay

≥98% (T)

assay

99.999% trace metals basis

form

powder

form

solid

form

solid

form

crystals or chunks

mp

450 °C (lit.)

mp

450 °C (lit.)

mp

450 °C (lit.)

mp

450 °C (lit.)

density

2.46 g/mL at 25 °C (lit.)

density

2.46 g/mL at 25 °C (lit.)

density

2.46 g/mL at 25 °C (lit.)

density

2.46 g/mL at 25 °C (lit.)

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.

Pictograms

Health hazard

Signal Word

Danger

Hazard Statements

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

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Vapor-phase Beckmann rearrangement of cyclohexanone oxime over boria-hydroxyapatite catalyst
Izumi Y, et al.
Chemistry Letters (Jpn), 12(10), 1649-1652 (1983)
Reduction of ketones to hydrocarbons with triethylsilane: m-nitroethylbenzene
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Organic Syntheses, 60, 108-108 (1981)
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