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Key Documents

B0394

Sigma-Aldrich

Acide borique

ACS reagent, ≥99.5%

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About This Item

Formule linéaire :
H3BO3
Numéro CAS:
Poids moléculaire :
61.83
Numéro CE :
Numéro MDL:
Code UNSPSC :
12352106
eCl@ss :
38120104
ID de substance PubChem :
Nomenclature NACRES :
NA.21

Qualité

ACS reagent

Niveau de qualité

Agence

suitable for SM 4500 - NH3
suitable for SM 5210

Pression de vapeur

2.6 mmHg ( 20 °C)

Pureté

≥99.5%

Forme

powder

Technique(s)

PCR: suitable

Impuretés

≤0.005% Insoluble in methanol
≤0.05% Nonvolatile with methanol

Pf

160 °C (dec.) (lit.)

Solubilité

water: soluble

Densité

1.440 g/cm3

Traces d'anions

chloride (Cl-): ≤0.001%
phosphate (PO43-): ≤0.001%
sulfate (SO42-): ≤0.01%

Traces de cations

Ca: ≤0.005%
Fe: ≤0.001%
heavy metals: ≤0.001% (by ICP)

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 Lewis acid(electron pair acceptor), which finds application in the areas of glass making, fire retardant, lubrication agent, buffer, and neutron absorber.

Application

Boric acid can be used as a catalyst to synthesize:
  • N-substituted cinnamamides via amidation reaction between cinnamic acid and benzylamines.
  • β-Aminoalcohols through the regioselective epoxides ring opening with aromatic amines in the presence of glycerol as a co-catalyst.
  • Organosulfur compounds via thia-Michael addition of thiols to α, β-unsaturated compounds.
It can also be used as an activator for the solvent-free reduction of aldehydes and ketones to alcohols in the presence of sodium borohydride.

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


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