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S9640

Sigma-Aldrich

Sodium tetraborate decahydrate

Sodium tetraborate decahydrate

ACS reagent, ≥99.5%

Sinonimo/i:

Borax decahydrate, Sodium borate decahydrate

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25 G
CHF 25.50
500 G
CHF 57.00
2.5 KG
CHF 233.00
4 X 2.5 KG
CHF 764.00

CHF 25.50

Spedizione prevista il04 aprile 2025

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25 G
CHF 25.50
500 G
CHF 57.00
2.5 KG
CHF 233.00
4 X 2.5 KG
CHF 764.00

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
Saggio:
≥99.5%
Grado:
ACS reagent
Stato:
powder or crystals

CHF 25.50

Spedizione prevista il04 aprile 2025

Richiedi un ordine bulk

Grado

ACS reagent

Livello qualitativo

200

agenzia

suitable for SM 4500 - NH3

Tensione di vapore

0.213 hPa ( 20 °C)

Saggio

≥99.5%

Stato

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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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

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Certificati d'analisi (COA)

Lot/Batch Number
BCCM4928
WXBF3070V
BCCL9614
BCCL9613
WXBF4666V

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  1. How is shipping temperature determined? And how is it related to the product storage temperature?

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    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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