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30435

Sigma-Aldrich

Fosfato de sodio dibasic dihydrate

puriss. p.a., reag. Ph. Eur., 98.5-101.0% (calc. to the dried substance)

Sinónimos:

Fosfato de sec-sodio, Fosfato de disodio, Hidrogenofosfato de disodio dihydrate

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500 G
US$ 73,60
1 KG
US$ 125,00
5 KG
US$ 475,00

US$ 73,60

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500 G
US$ 73,60
1 KG
US$ 125,00
5 KG
US$ 475,00

About This Item

Fórmula lineal:
Na2HPO4 · 2H2O
Número de CAS:
10028-24-7
Peso molecular:
177.99
Número CE:
231-448-7
Número MDL:
MFCD00149182
Código UNSPSC:
12352302
ID de la sustancia en PubChem:
329753513
NACRES:
NA.21

US$ 73,60

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Agency

USP/NF
reag. Ph. Eur.

grado

puriss. p.a.

Ensayo

98.5-101.0% (calc. to the dried substance)

Formulario

crystals

impurezas

reducing impurities, complies
≤0.0005% heavy metals (as Pb)
≤0.001% total nitrogen (N)
≤0.5% NaH2PO4 (calc. to dried subst.)

pérdida

19.5-21.0% loss on drying, 130 °C

pH

9.0-9.2 (20 °C, 5%)

trazas de anión

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

trazas de catión

As: ≤0.5 mg/kg
Fe: ≤5 mg/kg
K: ≤50 mg/kg

idoneidad

in accordance for appearance of solution

cadena SMILES

O.O.[Na+].[Na+].OP([O-])([O-])=O

InChI

1S/2Na.H3O4P.2H2O/c;;1-5(2,3)4;;/h;;(H3,1,2,3,4);2*1H2/q2*+1;;;/p-2

Clave InChI

KDQPSPMLNJTZAL-UHFFFAOYSA-L

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Descripción general

Sodium phosphate dibasic dihydrate is a highly hygroscopic and water-soluble compound. It is used in water softeners, cleaners also as buffers in particular formulations.

Aplicación

Sodium phosphate dibasic dihydrate is used:
  • In the synthesis of BiOCl/BiPO4 composites from bismuth nitrate pentahydrate and potassium chloride by the microwave-assisted hydrothermal method.
  • To prepare sodium phosphate buffer solution.
  • As a phosphorus source in the synthesis of Mg-doped hydroxyapatite nanoplates.

Código de clase de almacenamiento

13 - Non Combustible Solids

Clase de riesgo para el agua (WGK)

WGK 1

Punto de inflamabilidad (°F)

Not applicable

Punto de inflamabilidad (°C)

Not applicable

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Certificados de análisis (COA)

Lot/Batch Number
BCCN0154
BCCL2646
BCCK2588
BCCJ6441
BCCH3771

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Questions

1–2 of 2 Questions  

  1. 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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  2. 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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