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30435

Sigma-Aldrich

Sodium phosphate dibasic dihydrate

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

Sinónimos:
Disodium hydrogen phosphate dihydrate, di-Sodium hydrogen phosphate dihydrate, Disodium phosphate, sec-Sodium phosphate
Fórmula lineal:
Na2HPO4 · 2H2O
Número de CAS:
Peso molecular:
177.99
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.21

Quality Level

Agency/Method

USP/NF
reag. Ph. Eur.

grade

puriss. p.a.

assay

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

form

crystals

impurities

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

loss

19.5-21.0% loss on drying, 130 °C

pH

9.0-9.2 (20 °C, 5%)

anion traces

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

cation traces

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

suitability

in accordance for appearance of solution

SMILES string

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

InChI key

KDQPSPMLNJTZAL-UHFFFAOYSA-L

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Categorías relacionadas

Storage Class Code

13 - Non Combustible Solids

WGK Germany

WGK 1

Flash Point F

Not applicable

Flash Point C

Not applicable

Certificado de Análisis

Certificado de origen

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Immunosensors based on gold nanoparticles and reduced graphene oxide (AuNPs/rGO)-modified screen-printed electrodes (SPEs) were successfully synthesized using an electrochemical deposition method. The modified SPEs were characterized using a field emission scanning electron microscope (FESEM) and Raman spectroscopy to analyze the...
Susann K J Ludwig et al.
Analytical and bioanalytical chemistry, 406(27), 6857-6866 (2014-06-29)
Current contaminant and residue monitoring throughout the food chain is based on sampling, transport, administration, and analysis in specialized control laboratories. This is a highly inefficient and costly process since typically more than 99% of the samples are found to...
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European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V, 96, 53-64 (2015-07-15)
In this paper, the intrinsic dissolution profiles of naproxen (NAP) at pH values of 1.5 and 3.0 and of trimethoprim (TMP) at pH values of 1.5, 3.0, 5.0, 6.5 and 7.2 were measured. Meanwhile, the dissolution profiles of NAP and...

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