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Merck

S9640

Sigma-Aldrich

Sodium tetraborate decahydrate

ACS reagent, ≥99.5%

Synonim(y):

Borax decahydrate, Sodium borate decahydrate

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About This Item

Wzór liniowy:
Na2B4O7 · 10H2O
Numer CAS:
Masa cząsteczkowa:
381.37
Numer WE:
Numer MDL:
Kod UNSPSC:
12352302
Identyfikator substancji w PubChem:
NACRES:
NA.21

klasa czystości

ACS reagent

Poziom jakości

agency

suitable for SM 4500 - NH3

ciśnienie pary

0.213 hPa ( 20 °C)

Próba

≥99.5%

Postać

powder or crystals

zanieczyszczenia

≤0.005% Insoluble matter

pH

9.15-9.20 (25 °C, 0.01 M in solution)

gęstość

1.73 g/mL at 25 °C (lit.)

ślady anionów

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

ślady kationów

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

ciąg 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;;;;;;;;;;

Klucz InChI

CDMADVZSLOHIFP-UHFFFAOYSA-N

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Opis ogólny

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.

Zastosowanie

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.

Informacje prawne

This page may contain text that has been machine translated.

Piktogramy

Health hazardExclamation mark

Hasło ostrzegawcze

Danger

Zwroty wskazujące rodzaj zagrożenia

Klasyfikacja zagrożeń

Eye Irrit. 2 - Repr. 1B

Kod klasy składowania

6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects

Klasa zagrożenia wodnego (WGK)

WGK 1

Temperatura zapłonu (°F)

Not applicable

Temperatura zapłonu (°C)

Not applicable


Certyfikaty analizy (CoA)

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