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S9640

Sigma-Aldrich

Sodium tetraborate decahydrate

ACS reagent, ≥99.5%

Sinonimo/i:

Borax decahydrate, Sodium borate decahydrate

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About This Item

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

Grado

ACS reagent

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 (PO43-): ≤0.001%
sulfate (SO42-): ≤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

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Categorie correlate

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

Pittogrammi

Health hazardExclamation mark
GHS08,GHS07

Avvertenze

Danger

Indicazioni di pericolo

H319,H360FD

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

Certificati d'analisi (COA)

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