MilliporeSigma
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202878

Sigma-Aldrich

Boric acid

99.999% trace metals basis

Linear Formula:
H3BO3
CAS Number:
Molecular Weight:
61.83
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.23

Quality Level

vapor pressure

2.6 mmHg ( 20 °C)

assay

99.999% trace metals basis

form

crystalline powder

mp

160 °C (dec.) (lit.)

solubility

water: 49.2 g/L at 20 °C

density

1.49 g/cm3 at 23 °C

SMILES string

OB(O)O

InChI

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

InChI key

KGBXLFKZBHKPEV-UHFFFAOYSA-N

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General description

Boric acid is a weak monobasic acid, it accepts OH- ions, hence is a Lewis acid. In boric acid, B is sp2 hybridized, forming a planar triangle structure.The principal oxide of boron, B2O3, is obtained as a vitreous solid by dehydration of boric acid at red heat.

Application

Boric acid can be used as fungicide, bactericide, antiseptic, insecticide. Large scale use in glass industry as flame retardant, in buffer solutions.
Boric acid finds uses in several areas; such as
  • In glass fibres, to enhance its resistance and color
  • In glazing ceramic wares
  • As a condensing agent, chemical intermediate and as a precursor for preparation of borates and other boron based compounds
  • As a water coolant in nuclear reactors
  • In electrolytic condensers and capacitors 1

Packaging

10, 50, 250 g in poly bottle
Packaged in poly bottles

Pictograms

Health hazard

Signal Word

Danger

Hazard Statements

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

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

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Certificate of Origin

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