S9640

Sodium tetraborate decahydrate

ACS reagent, ≥99.5%

• Sinônimo(s): Borax decahydrate, Sodium borate decahydrate
• Fórmula linear: Na₂B₄O₇ · 10H₂O
• Número CAS: 1303-96-4
• Peso molecular: 381.37
• Número CE: 215-540-4
• Número MDL: MFCD00149193
• Código UNSPSC: 12352302
• ID de substância PubChem: 329824630
• NACRES: NA.21

Propriedades

• grau: ACS reagent
• Agency: suitable for SM 4500 - NH3
• pressão de vapor: 0.213 hPa ( 20 °C)
• Ensaio: ≥99.5%
• Formulário: powder or crystals
• Impurezas: ≤0.005% Insoluble matter
• pH: 9.15-9.20 (25 °C, 0.01 M in solution)
• densidade: 1.73 g/mL at 25 °C (lit.)
• traços de ânion: chloride (Cl^-): ≤0.001%; phosphate (PO₄^3-): ≤0.001%; sulfate (SO₄^2-): ≤0.005%
• traços de cátion: Ca: ≤0.005%; Fe: ≤5 ppm; heavy metals (as Pb): ≤0.001%
• cadeia de caracteres 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;;;;;;;;;;
• chave InChI: CDMADVZSLOHIFP-UHFFFAOYSA-N

Descrição

Descrição geral

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.

Aplicação

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.

Informações legais

Informações de segurança

• Pictogramas: GHS08,GHS07
• Palavra indicadora: Danger
• Frases de perigo: H319,H360FD
• Declarações de precaução: P202 - P264 - P280 - P305 + P351 + P338 - P308 + P313 - P337 + P313
• Classificações de perigo: Eye Irrit. 2 - Repr. 1B
• Código de classe de armazenamento: 6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects
• Classe de risco de água (WGK): WGK 1
• Ponto de fulgor (°F): Not applicable
• Ponto de fulgor (°C): Not applicable