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Merck
CN

15680

Boric anhydride

purum p.a., ≥97.0% (T)

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:
329750965
eCl@ss:
38120103
UNSPSC Code:
12352300
EC Number:
215-125-8
MDL number:
MFCD00011315

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)

grade

purum p.a.

assay

≥97.0% (T)

loss

≤3% loss on ignition, 900 °C

mp

450 °C (lit.)

density

2.46 g/mL at 25 °C (lit.)

anion traces

chloride (Cl-): ≤50 mg/kg, sulfate (SO42-): ≤50 mg/kg

cation traces

Ca: ≤50 mg/kg, Cd: ≤50 mg/kg, Co: ≤50 mg/kg, Cu: ≤50 mg/kg, Fe: ≤50 mg/kg, K: ≤100 mg/kg, Na: ≤2000 mg/kg, Ni: ≤50 mg/kg, Pb: ≤50 mg/kg, Zn: ≤50 mg/kg

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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

Regulatory Information

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Crystallization of gels and glasses made from hot-pressed gels.
Phalippou J, et al.
Journal of Non-Crystalline Solids, 48(1), 17-30 (1982)
Laurie P Volak et al.
Drug metabolism and disposition: the biological fate of chemicals, 36(8), 1594-1605 (2008-05-16)
Curcuminoid extract and piperine are being evaluated for beneficial effects in Alzheimer's disease, among other intractable disorders. Consequently, we studied the potential for herb-drug interactions involving cytochrome P450 (P450), UDP-glucuronosyltransferase (UGT), and sulfotransferase (SULT) enzymes. The curcuminoid extract inhibited SULT
Yinling Wang et al.
Analytical biochemistry, 385(1), 184-186 (2008-11-27)
Glassy carbon electrode modified with boron oxide nanoparticles supported on multiwall carbon nanotubes was obtained via a facile approach. The as-prepared modified electrode exhibits excellent electrocatalytic activity toward the redox of glucose in pH 7.0 phosphate buffer solution. The electrochemical
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.
Pratik Koirala et al.
The journal of physical chemistry. A, 117(6), 1310-1318 (2012-11-03)
Using density functional theory based calculations, we have systematically studied the equilibrium geometries, relative stabilities, and electronic and magnetic properties of Fe and Mn atoms interacting with a varying number of BO(2) moieties. These clusters are found to exhibit hyperhalogen
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