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Merck
CN

339075

Boric anhydride

99.98% trace metals basis

Synonym(s):

Boron trioxide

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About This Item

Empirical Formula (Hill Notation):
B2O3
CAS Number:
1303-86-2
Molecular Weight:
69.62
PubChem Substance ID:
57648934
eCl@ss:
38120103
UNSPSC Code:
12352300
NACRES:
NA.21
EC Number:
215-125-8
MDL number:
MFCD00011315
Assay:
99.98% trace metals basis
Form:
powder

Key Documents

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InChI key

JKWMSGQKBLHBQQ-UHFFFAOYSA-N

InChI

1S/B2O3/c3-1-5-2-4

SMILES string

O=BOB=O

vapor density

>1 (vs air)

description

for inorganic trace analysis

assay

99.98% trace metals basis

form

powder

mp

450 °C (lit.)

density

2.46 g/mL at 25 °C (lit.)

Quality Level

100

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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
GHS08

signalword

Danger

hcodes

H360FD

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

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Certificates of Analysis (COA)

Lot/Batch Number
MKCX9561
MKCV9687
MKCW8787
MKCT8761
MKCQ9370

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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
Fry JL, et al.
Organic Syntheses, 60, 108-108 (1981)
Xiaofeng Liu et al.
Chemical communications (Cambridge, England), (27)(27), 4073-4075 (2009-07-02)
A facile strategy based on the reaction of urea and boric acid is developed for the synthesis of toxicity-free BCNO nanocrystals containing carbon impurities and which exhibit efficient multi-color fluorescence under both single-photon and two-photon excitation.
Shibayan Roy et al.
Journal of materials science. Materials in medicine, 19(9), 3123-3133 (2008-04-17)
Herein, we report the results of the in vitro dissolution tests, which were carried out by immersing the selected glass-ceramic samples in artificial saliva (AS) for various time periods of up to 42 days. In our experiments, the SiO(2)-MgO-Al(2)O(3)-K(2)O-B(2)O(3)-F glass
Virendra K Parashar et al.
Nature nanotechnology, 3(10), 589-594 (2008-10-08)
Nanoparticles play an important role in chemical and biological sciences due to their ability to bind and concentrate many molecules on their surface. Polymers and silica are widely used to make nanoparticles, but efforts to make nanoparticles from borosilicate glass--which
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