S9640

Sodium tetraborate decahydrate

ACS reagent, ≥99.5%

• Synonyme(s) : Borax decahydrate, Sodium borate decahydrate
• Formule linéaire : Na₂B₄O₇ · 10H₂O
• CAS Number: 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

Propriétés

• Qualité: ACS reagent
• Niveau de qualité: 200
• Agence: suitable for SM 4500 - NH3
• Pression de vapeur: 0.213 hPa ( 20 °C)
• Essai: ≥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 (PO₄^3-): ≤0.001%; sulfate (SO₄^2-): ≤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

Description

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

Informations sur la sécurité

• Pictogrammes: GHS08,GHS07
• Mention d'avertissement: Danger
• Mentions de danger: H319,H360FD
• Conseils de prudence: P202 - P264 - P280 - P305 + P351 + P338 - P308 + P313 - P337 + P313
• 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