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Merck
CN

30414

Sodium phosphate dibasic dodecahydrate

99-101% (calc. to the dried substance)

Synonym(s):

sec-Sodium phosphate, Disodium hydrogen phosphate dodecahydrate, Disodium phosphate, di-Sodium hydrogen phosphate dodecahydrate

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About This Item

Linear Formula:
Na2HPO4 · 12H2O
CAS Number:
10039-32-4
Molecular Weight:
358.14
UNSPSC Code:
12161700
PubChem Substance ID:
329753500
EC Number:
231-448-7
MDL number:
MFCD00149181
Assay:
99-101% (calc. to the dried substance)
Form:
solid

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InChI key

DGLRDKLJZLEJCY-UHFFFAOYSA-L

InChI

1S/2Na.H3O4P.12H2O/c;;1-5(2,3)4;;;;;;;;;;;;/h;;(H3,1,2,3,4);12*1H2/q2*+1;;;;;;;;;;;;;/p-2

assay

99-101% (calc. to the dried substance)

form

solid

impurities

Reducing matter, complies, ≤0.001% Total nitrogen (N), ≤0.005% In water insoluble matters, ≤0.5% NaH2PO4 (calc. to dried subst.)

pH

9.0-9.3 (20 °C, 5%)

anion traces

chloride (Cl-): ≤5 mg/kg, sulfate (SO42-): ≤50 mg/kg

cation traces

As: ≤0.5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤5 mg/kg, K: ≤10 mg/kg, Pb: ≤2 mg/kg, Zn: ≤5 mg/kg

suitability

complies for appearance of solution

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Storage Class

11 - Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

Regulatory Information

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