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71997

Sigma-Aldrich

Borax Anhydrous

BioUltra, anhydrous, ≥99%

Sinónimos:

Sodium tetraborate

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About This Item

Fórmula lineal:
Na2B4O7
Número de CAS:
1330-43-4
Peso molecular:
201.22
Número CE:
215-540-4
Número MDL:
MFCD00081185
Código UNSPSC:
12352302
ID de la sustancia en PubChem:
329763686
NACRES:
NA.25
En este momento no podemos mostrarle ni los precios ni la disponibilidad

grado

reagent grade

Nivel de calidad

200

Línea del producto

BioUltra

Ensayo

≥99%

Formulario

crystals

impurezas

insoluble matter, passes filter test

pérdida

≤1% loss on drying, 20 °C (HV)

pH

9.0-10.5 (25 °C, 0.1 M in H2O)

solubilidad

H2O: 0.1 M at 20 °C, clear, colorless

trazas de anión

chloride (Cl-): ≤10 mg/kg
phosphate (PO43-): ≤20 mg/kg
sulfate (SO42-): ≤50 mg/kg

trazas de catión

Al: ≤5 mg/kg
As: ≤0.5 mg/kg
Ba: ≤5 mg/kg
Bi: ≤5 mg/kg
Ca: ≤50 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤5 mg/kg
K: ≤50 mg/kg
Li: ≤5 mg/kg
Mg: ≤5 mg/kg
Mn: ≤5 mg/kg
Mo: ≤5 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Sr: ≤5 mg/kg
Zn: ≤5 mg/kg

λ

0.1 M in H2O

Absorción UV

λ: 260 nm Amax: ≤0.020
λ: 280 nm Amax: ≤0.015

cadena SMILES

[Na+].[Na+].[O-]B1Ob2ob([O-])ob(O1)o2

InChI

1S/B4O7.2Na/c5-1-7-3-9-2(6)10-4(8-1)11-3;;/q-2;2*+1

Clave InChI

UQGFMSUEHSUPRD-UHFFFAOYSA-N

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Categorías relacionadas

Información legal

Pictogramas

Health hazardExclamation mark
GHS08,GHS07

Palabra de señalización

Danger

Frases de peligro

H319,H360FD

Clasificaciones de peligro

Eye Irrit. 2 - Repr. 1B

Código de clase de almacenamiento

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

Clase de riesgo para el agua (WGK)

WGK 1

Punto de inflamabilidad (°F)

Not applicable

Punto de inflamabilidad (°C)

Not applicable

Equipo de protección personal

Eyeshields, Gloves, type P3 (EN 143) respirator cartridges

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Certificados de análisis (COA)

Lot/Batch Number
BCCM6847
BCCL6820
BCCJ1338
BCCG6523
BCCD7933

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Shao-Qiang Hu et al.
Electrophoresis, 34(2), 260-268 (2012-11-20)
Based on the investigation of the effect of microemulsion charge on the chiral separation, a new chiral separation method with MEEKC employing neutral microemulsion was established. The method used a microemulsion containing 3.0% (w/v) neutral surfactant Tween 20 and 0.8%
Tatiana S Fukuji et al.
Journal of pharmaceutical and biomedical analysis, 51(2), 430-438 (2009-06-24)
In this work, the separation of nine phenolic acids (benzoic, caffeic, chlorogenic, p-coumaric, ferulic, gallic, protocatechuic, syringic, and vanillic acid) was approached by a 3(2) factorial design in electrolytes consisting of sodium tetraborate buffer (STB) in the concentration range of
Danyue Zhao et al.
Electrophoresis, 33(15), 2424-2432 (2012-08-14)
An efficient and sensitive method for the separation and determination of three essential amino acids and three B vitamins by CE-LIF with a simultaneous derivatization procedure was developed. The conditions for derivatization and separation of these micronutrients were investigated. FITC
Ho-Yong Kim et al.
Environmental toxicology and chemistry, 30(6), 1297-1305 (2011-03-08)
Okara, an organic waste product obtained from soy milk production, was used with copper chloride or sodium borate to formulate new wood preservatives as a substitute for expensive wood preservatives, such as copper-azole-based preservatives and ammoniacal copper quaternary. Before formulating
Kate E Archibald et al.
American journal of veterinary research, 75(10), 929-936 (2014-09-26)
To establish a nonterminal semen collection method for use in captive Chilean rose tarantulas (Grammostola rosea) and to evaluate tools for investigating morphology and viability of spermatozoa. 7 mature male Chilean rose tarantulas. Each tarantula was anesthetized in a 500-mL
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Questions

1–2 of 2 Questions  

  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

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

    1 answer

    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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