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Boric acid

Name: Boric acid
Brand: SIGALD

puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., buffer substance, ≥99.8%

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About This Item

Linear Formula:

H₃BO₃

CAS Number:

10043-35-3

Molecular Weight:

61.83

PubChem Substance ID:

329753669

eCl@ss:

38120104

UNSPSC Code:

12352106

NACRES:

NA.21

EC Number:

233-139-2

MDL number:

MFCD00011337

Assay:

≥99.8%

Form:

powder or crystals

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Properties

Quality Level

200

agency

USP/NF, reag. ISO, reag. Ph. Eur.

vapor pressure

2.6 mmHg ( 20 °C)

grade

ACS reagent, puriss. p.a.

assay

≥99.8%

form

powder or crystals

impurities

≤0.005% insoluble in methanol, ≤0.05% with methanol-HCl non-volat. matter

pH

3.6-4.0 (20 °C, 4%)

mp

160 °C (dec.) (lit.)

solubility

water: soluble

density

1.440 g/cm³

anion traces

chloride (Cl^-): ≤3 mg/kg, phosphate (PO₄^3-): ≤5 mg/kg, sulfate (SO₄^2-): ≤5 mg/kg

cation traces

As: ≤5 mg/kg, Ca: ≤10 mg/kg, Cd: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤1 mg/kg, Mg: ≤5 mg/kg, Pb: ≤5 mg/kg, Zn: ≤5 mg/kg

SMILES string

OB(O)O

InChI

1S/BH3O3/c2-1(3)4/h2-4H

InChI key

KGBXLFKZBHKPEV-UHFFFAOYSA-N

Description

General description

Boric acid can be used as a Lewis acid catalyst in organic synthesis to facilitate various organic reactions, including dehydration, hydrolysis, decarboxylation, and condensation reactions. It produces different borate anions and salts and can react with alcohols to produce borate esters. It is also used as a buffering agent and pH adjuster.

Boric acid is a very weak acid, having pH in the range of 3.6-4.0. Coulometric method for the determination of boric acid has been reported.

Application

Boric acid can be used as a precursor to synthesize boron carbon oxynitride thin films by the atmospheric pressure chemical vapor deposition (APCVD) method using carbon-rich methane and nitrogen-rich ammonia.

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pictograms

GHS08

signalword

Danger

hcodes

H360FD

pcodes

P201 - P202 - P280 - P308 + P313 - P405 - P501

Hazard Classifications

Repr. 1B

Storage Class

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

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Catanzaro EJ, et al.

Boric Acid: Isotopic and Assay Standard Reference Materials, 1-1 (1970)

One-pot synthesis of 3, 4-dihydropyrimidin-2(1H)-ones using boric acid as catalyst.

Tu S, et al.

Tetrahedron Letters, 44(32), 6153-6155 (2003)

In vitro activity of bergamot natural essence and furocoumarin-free and distilled extracts, and their associations with boric acid, against clinical yeast isolates.

L Romano et al.

The Journal of antimicrobial chemotherapy, 55(1), 110-114 (2004-12-03)

There is very little information, to date, on the antifungal activity of bergamot oil. In this study, we investigated the in vitro activity of three bergamot oils (natural essence, furocoumarin-free extract and distilled extract) against clinically relevant Candida species. We

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