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Merck
CN

S3397

Sodium phosphate dibasic

suitable for electrophoresis, ≥99%

Synonym(s):

sec-Sodium phosphate, Disodium hydrogen phosphate, Disodium phosphate, Sodium hydrogenphosphate

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About This Item

Linear Formula:
Na2HPO4
CAS Number:
7558-79-4
Molecular Weight:
141.96
PubChem Substance ID:
24899559
eCl@ss:
38070211
UNSPSC Code:
12161700
EC Number:
231-448-7
MDL number:
MFCD00003496

Key Documents

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assay

≥99%

InChI key

BNIILDVGGAEEIG-UHFFFAOYSA-L

InChI

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

technique(s)

electrophoresis: suitable (for Weber and Osborn system buffers)

impurities

≤0.01% Insoluble matter

pH

8.7-9.3 (25 °C, 5% in solution)

pKa (25 °C)

(1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid)

anion traces

chloride (Cl-): ≤0.002%, sulfate (SO42-): ≤0.005%

cation traces

Fe: ≤0.002%, heavy metals (as Pb): ≤0.001%

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Storage Class

13 - Non Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

Regulatory Information

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Certificates of Analysis (COA)

Lot/Batch Number
SLBB8011V
081M00091V
010M00244V
010M00244
081M00091

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