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Key Documents

202878

Sigma-Aldrich

Acide borique

99.999% trace metals basis

Synonyme(s) :

orthoboric acid

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About This Item

Formule linéaire :
H3BO3
Numéro CAS:
Poids moléculaire :
61.83
Numéro CE :
Numéro MDL:
Code UNSPSC :
12352300
ID de substance PubChem :
Nomenclature NACRES :
NA.23

Pression de vapeur

2.6 mmHg ( 20 °C)

Niveau de qualité

Pureté

99.999% trace metals basis

Forme

crystalline powder

Pf

160 °C (dec.) (lit.)

Solubilité

water: 49.2 g/L at 20 °C

Densité

1.49 g/cm3 at 23 °C

Chaîne SMILES 

OB(O)O

InChI

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

Clé InChI

KGBXLFKZBHKPEV-UHFFFAOYSA-N

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Description générale

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 have a 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

Conditionnement

Packaged in poly bottles

Pictogrammes

Health hazard

Mention d'avertissement

Danger

Mentions de danger

Classification des risques

Repr. 1B

Code de la classe de stockage

6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects

Classe de danger pour l'eau (WGK)

WGK 1

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

Équipement de protection individuelle

Eyeshields, Gloves, type P3 (EN 143) respirator cartridges


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