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S9640

Sigma-Aldrich

Sodium tetraborate decahydrate

ACS reagent, ≥99.5%

Synonyme(s) :

Borax decahydrate, Sodium borate decahydrate

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About This Item

Formule linéaire :
Na2B4O7 · 10H2O
Numéro CAS:
1303-96-4
Poids moléculaire :
381.37
Numéro CE :
215-540-4
Numéro MDL:
MFCD00149193
Code UNSPSC :
12352302
ID de substance PubChem :
329824630
Nomenclature NACRES :
NA.21

Qualité

ACS reagent

Agence

suitable for SM 4500 - NH3

Pression de vapeur

0.213 hPa ( 20 °C)

Pureté

≥99.5%

Forme

powder or crystals

Impuretés

≤0.005% Insoluble matter

pH

9.15-9.20 (25 °C, 0.01 M in solution)

Densité

1.73 g/mL at 25 °C (lit.)

Traces d'anions

chloride (Cl-): ≤0.001%
phosphate (PO43-): ≤0.001%
sulfate (SO42-): ≤0.005%

Traces de cations

Ca: ≤0.005%
Fe: ≤5 ppm
heavy metals (as Pb): ≤0.001%

Chaîne SMILES 

O.O.O.O.O.O.O.O.O.O.[Na+].[Na+].[O-]B1Ob2ob([O-])ob(O1)o2

InChI

1S/B4O7.2Na.10H2O/c5-1-7-3-9-2(6)10-4(8-1)11-3;;;;;;;;;;;;/h;;;10*1H2/q-2;2*+1;;;;;;;;;;

Clé InChI

CDMADVZSLOHIFP-UHFFFAOYSA-N

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Catégories apparentées

Description générale

Sodium tetraborate decahydrate is a naturally occurring material used as a catalyst or additive for many organic transformations such as Nef reaction, Knoevenagel condensation, substitution, addition, selective methylation of vicinal diols, and desilylation of trimethylsilyl alkynones.

Application

Sodium tetraborate decahydrate can be used as a catalyst in the:
  • Regioselective thiolysis of 1,2-epoxides by using thiols to synthesize β-hydroxy sulfides.
  • Hetero-Michael addition of thiols with electron-deficient olefins to synthesize corresponding β-adducts.
  • Solvent-free Biginelli reaction to synthesize 3,4-dihydropyrimidin-2(1H)-ones.
It can also be used as an additive to prepare polypyrrole-borax composites with high dielectric properties.

Informations légales

Pictogrammes

Health hazardExclamation mark
GHS08,GHS07

Mention d'avertissement

Danger

Mentions de danger

H319,H360FD

Classification des risques

Eye Irrit. 2 - 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

Certificats d'analyse (COA)

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