S9640

Sodium tetraborate decahydrate

ACS reagent, ≥99.5%

• Sinonimo/i: Borax decahydrate, Sodium borate decahydrate
• Formula condensata: Na₂B₄O₇ · 10H₂O
• Numero CAS: 1303-96-4
• Peso molecolare: 381.37
• Numero CE: 215-540-4
• Numero MDL: MFCD00149193
• Codice UNSPSC: 12352302
• ID PubChem: 329824630
• NACRES: NA.21

Proprietà

• Grado: ACS reagent
• Livello qualitativo: 200
• agenzia: suitable for SM 4500 - NH3
• Tensione di vapore: 0.213 hPa ( 20 °C)
• Saggio: ≥99.5%
• Forma fisica: powder or crystals
• Impurezze: ≤0.005% Insoluble matter
• pH: 9.15-9.20 (25 °C, 0.01 M in solution)
• Densità: 1.73 g/mL at 25 °C (lit.)
• Anioni in tracce: chloride (Cl^-): ≤0.001%; phosphate (PO₄^3-): ≤0.001%; sulfate (SO₄^2-): ≤0.005%
• Cationi in tracce: Ca: ≤0.005%; Fe: ≤5 ppm; heavy metals (as Pb): ≤0.001%
• Stringa SMILE: 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;;;;;;;;;;; CDMADVZSLOHIFP-UHFFFAOYSA-N

Descrizione

Descrizione generale

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.

Applicazioni

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.

Note legali

Informazioni sulla sicurezza

• Pittogrammi: GHS08,GHS07
• Avvertenze: Danger
• Indicazioni di pericolo: H319,H360FD
• Consigli di prudenza: P202 - P264 - P280 - P305 + P351 + P338 - P308 + P313 - P337 + P313
• Classi di pericolo: Eye Irrit. 2 - Repr. 1B
• Codice della classe di stoccaggio: 6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects
• Classe di pericolosità dell'acqua (WGK): WGK 1
• Punto d’infiammabilità (°F): Not applicable
• Punto d’infiammabilità (°C): Not applicable