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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)

Synonym(s):
sec-Sodium phosphate, Disodium hydrogen phosphate dihydrate, Disodium phosphate, di-Sodium hydrogen phosphate dihydrate
Linear Formula:
Na2HPO4 · 2H2O
CAS Number:
Molecular Weight:
177.99
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.21

Agency

USP/NF
reag. Ph. Eur.

Quality Level

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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Related Categories

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

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Certificate of Origin

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