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S9640

Sigma-Aldrich

Tetraborato de sodio decahydrate

Sodium tetraborate decahydrate

ACS reagent, ≥99.5%

Sinónimos:

Borato de sodio decahydrate, Borax decahydrate

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25 G
US$ 127,00
500 G
US$ 213,00
2.5 KG
US$ 413,00
4 X 2.5 KG
US$ 1.300,00

US$ 127,00

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25 G
US$ 127,00
500 G
US$ 213,00
2.5 KG
US$ 413,00
4 X 2.5 KG
US$ 1.300,00

About This Item

Fórmula lineal:
Na2B4O7 · 10H2O
Número de CAS:
1303-96-4
Peso molecular:
381.37
EC Number:
215-540-4
MDL number:
MFCD00149193
UNSPSC Code:
12352302
PubChem Substance ID:
329824630
NACRES:
NA.21
assay:
≥99.5%
grade:
ACS reagent
form:
powder or crystals

US$ 127,00

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grade

ACS reagent

Quality Level

200

agency

suitable for SM 4500 - NH3

vapor pressure

0.213 hPa ( 20 °C)

assay

≥99.5%

form

powder or crystals

impurities

≤0.005% Insoluble matter

pH

9.15-9.20 (25 °C, 0.01 M in solution)

density

1.73 g/mL at 25 °C (lit.)

anion traces

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

cation traces

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

SMILES string

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;;;;;;;;;;

InChI key

CDMADVZSLOHIFP-UHFFFAOYSA-N

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General description

El decahidrato de tetraborato de sodio es un material natural utilizado como catalizador o aditivo para muchas transformaciones orgánicas como: reacción de Nef, condensación de Knoevenagel, sustitución, adición, metilación selectiva de dioles vecinales y desililación de trimetilsilil alquinonas.

Application

El decahidrato de tetraborato de sodio puede utilizarse como catalizador en
  • La tiólisis regioselectiva de 1,2-epóxidos utilizando tioles para sintetizar sulfuros β-hidroxi.
  • La heteroadición de Michael de tioles con olefinas con deficiencia de electrones para sintetizar los correspondientes β-aductos.
  • La reacción de Biginelli sin disolvente para sintetizar 3,4-dihidropirimidin-2(1H)-onas.
También se puede utilizar como aditivo para preparar compuestos de polipirrol-bórax con elevadas propiedades dieléctricas.

Legal Information

pictograms

Health hazardExclamation mark
GHS08,GHS07

signalword

Danger

Hazard Classifications

Eye Irrit. 2 - Repr. 1B

Storage Class

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

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

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Certificados de análisis (COA)

Lot/Batch Number
BCCM4928
WXBF3070V
BCCL9614
BCCL9613
WXBF4666V

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SAFC

1.06303

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Borax Anhydrous puriss. p.a., anhydrous, ≥98.0% (T)

Sigma-Aldrich

71996

Borax Anhydrous

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Sigma-Aldrich

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Ácido bórico

Ácido bórico BioReagent, for molecular biology, suitable for cell culture, suitable for plant cell culture, ≥99.5%

Sigma-Aldrich

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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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