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202851

Sigma-Aldrich

Boric anhydride

99.999% 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
EC Number:
215-125-8
MDL number:
MFCD00011315
UNSPSC Code:
12352300
eCl@ss:
38120103
PubChem Substance ID:
24852124
NACRES:
NA.23

vapor density

>1 (vs air)

Quality Level

100

Assay

99.999% trace metals basis

form

crystals or chunks

reaction suitability

reagent type: catalyst
core: boron

mp

450 °C (lit.)

solubility

ethanol: soluble at 20 °C

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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General description

Anhydride can be obtained by heating boric acid at temperatures higher than 160oC.1

Application

Reducing boron anhydride in the presence of sodium yields amorphous boron. Whereas reducing in the presence of aluminum at high temperatures affords crystalline boron. 1

Packaging

Packaged in poly bottles

Pictograms

Health hazard
GHS08

Signal Word

Danger

Hazard Statements

H360FD

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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Certificates of Analysis (COA)

Lot/Batch Number
MKCQ6519
MKCJ8417
MKCB0246V
MKBV9848V
MKBN7465V

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Jin-Su Nam et al.
Journal of hazardous materials, 172(2-3), 1013-1020 (2009-08-25)
Recently, it was found by the authors of this study that glasses of a special composition have an ability to remove some hazardous ions from waste solutions. In the present study, a SiO(2)-B(2)O(3)-CaO-Na(2)O glass system has been chosen to remove
Ivan Hung et al.
Journal of magnetic resonance (San Diego, Calif. : 1997), 197(2), 229-236 (2009-02-10)
Using a two-dimensional multiple-quantum (MQ) double rotation (DOR) experiment the contributions of the chemical shift and quadrupolar interaction to isotropic resonance shifts can be completely separated. Spectra were acquired using a three-pulse triple-quantum z-filtered pulse sequence and subsequently sheared along
G Krishna Kumari et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 101, 140-147 (2012-10-27)
Divalent Mn2+ ions containing 20ZnO+xLi2O+(30-x)K2O+50B2O3(5≤x≤25) mol% glasses are prepared by using melt quench technique and are characterized by several spectroscopic techniques. Various physical parameters are evaluated from the measured values of density and refractive index for the observation of mixed
Ozcan Yalçinkaya et al.
Journal of hazardous materials, 195, 332-339 (2011-09-06)
New nano hybrid material (ZrO(2)/B(2)O(3)) was synthesized and applied as a sorbent for the separation and/or preconcentration of Co(II), Cu(II) and Cd(II) in water and tea leaves prior to their determination by flame atomic absorption spectrometry. Synthesized nano material was
Pengyu Zhang et al.
Chemical communications (Cambridge, England), 46(22), 3988-3990 (2010-04-30)
Al-rich single-crystal mullite [Al(2)(Al(2.8)Si(1.2))O(9.6)] nanowires were prepared by B(2)O(3)-doped molten salts synthesis. The nanowires have diameters in the range 30-50 nm and typical lengths of 1 microm. The mullite nanowires were well dispersed and facile to obtain.
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