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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)

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

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Anne Soleilhavoup et al.
Magnetic resonance in chemistry : MRC, 48 Suppl 1, S159-S170 (2010-09-08)
Boron-11 and silicon-29 NMR spectra of xSiO(2)-(1-x)B(2)O(3) glasses (x=0.40, 0.80 and 0.83) have been calculated using a combination of molecular dynamics (MD) simulations with density functional theory (DFT) calculations of NMR parameters. Structure models of 200 atoms have been generated
Jae Hyup Lee et al.
Drug and chemical toxicology, 33(1), 38-47 (2009-12-10)
CaO-SiO(2)-P(2)O(5)-B(2)O(3) glass ceramics directly bond to bone and have potential use as a bone substitute material. The present study evaluated the toxicity from subchronic intravenous administration of CaO-SiO(2)-P(2)O(5)-B(2)O(3) glass ceramics to male and female Sprague-Dawley rats. The rats were divided
Elena A Khokhlova et al.
ChemSusChem, 5(4), 783-789 (2012-02-24)
The mechanistic nature of the conversion of carbohydrates to the sustainable platform chemical 5-hydroxymethylfurfural (5-HMF) was revealed at the molecular level. A detailed study of the key sugar units involved in the biomass conversion process has shown that the simple
Orhan Murat Kalfa et al.
Journal of hazardous materials, 166(1), 455-461 (2009-01-13)
A new solid phase extractor, nano-scale diboron trioxide/titanium dioxide composite material, was synthesized and used for separation and/or preconcentration of trace cadmium ion from various samples. The characterization of the synthesized material was performed by scanning electron microscope (SEM), transmission
Minh Tho Nguyen et al.
The journal of physical chemistry. A, 113(17), 4895-4909 (2009-04-01)
Thermochemical properties of a set of small boron (B(n)) and boron oxide (B(n)O(m)) clusters, with n = 1-4 and m = 0-3, their anions, and the B(4)(2-) dianion, were calculated by using coupled-cluster theory CCSD(T) calculations with the aug-cc-pVnZ (n
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