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Documenti fondamentali

30435

Sigma-Aldrich

Fosfato di sodio

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

Sinonimo/i:

Fosfato di sodio secondario, Di-sodio idrogenofosfato, Fosfato disodico, Sodio fosfato bibasico

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About This Item

Formula condensata:
Na2HPO4 · 2H2O
Numero CAS:
Peso molecolare:
177.99
Numero CE:
Numero MDL:
Codice UNSPSC:
12352302
ID PubChem:
NACRES:
NA.21
Saggio:
98.5-101.0% (calc. to the dried substance)
Stato:
crystals

agenzia

USP/NF
reag. Ph. Eur.

Livello qualitativo

Grado

puriss. p.a.

Saggio

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

Stato

crystals

Impurezze

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

Perdita

19.5-21.0% loss on drying, 130 °C

pH

9.0-9.2 (20 °C, 5%)

Anioni in tracce

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

Cationi in tracce

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

Compatibilità

in accordance for appearance of solution

Stringa SMILE

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
KDQPSPMLNJTZAL-UHFFFAOYSA-L

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Categorie correlate

Descrizione generale

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.

Applicazioni

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.

Codice della classe di stoccaggio

13 - Non Combustible Solids

Classe di pericolosità dell'acqua (WGK)

WGK 1

Punto d’infiammabilità (°F)

Not applicable

Punto d’infiammabilità (°C)

Not applicable


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