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Merck

31146

Sigma-Aldrich

Borsäure

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

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About This Item

Lineare Formel:
H3BO3
CAS-Nummer:
Molekulargewicht:
61.83
EG-Nummer:
MDL-Nummer:
UNSPSC-Code:
12352106
eCl@ss:
38120104
PubChem Substanz-ID:
NACRES:
NA.21

Qualität

ACS reagent
puriss. p.a.

Qualitätsniveau

Agentur

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

Dampfdruck

2.6 mmHg ( 20 °C)

Assay

≥99.8%

Form

powder or crystals

Verunreinigungen

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

pH-Wert

3.6-4.0 (20 °C, 4%)

mp (Schmelzpunkt)

160 °C (dec.) (lit.)

Löslichkeit

water: soluble

Dichte

1.440 g/cm3

Anionenspuren

chloride (Cl-): ≤3 mg/kg
phosphate (PO43-): ≤5 mg/kg
sulfate (SO42-): ≤5 mg/kg

Kationenspuren

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

InChIKey

KGBXLFKZBHKPEV-UHFFFAOYSA-N

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Allgemeine Beschreibung

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.

Anwendung

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.

Piktogramme

Health hazard

Signalwort

Danger

H-Sätze

Gefahreneinstufungen

Repr. 1B

Lagerklassenschlüssel

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

WGK

WGK 1

Flammpunkt (°F)

Not applicable

Flammpunkt (°C)

Not applicable


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Tetrahedron Letters, 44(32), 6153-6155 (2003)
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Journal of chromatography. A, 1346, 117-122 (2014-05-09)
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