Disodium hydrogen phosphate dodecahydrate 98.5-102.5% (by acidimetry), crystals, EMSURE® Ph. Eur., BP, JP, USP, Supelco®

Supplier: Merck

Synonyms: sec-Sodium phosphate, Sodium hydrogen phosphate dodecahydrate, Disodium phosphate, Dibasic sodium phosphate dodecahydrate, Sodium phosphate dibasic dodecahydrate, di-Sodium hydrogen phosphate dodecahydrate, Sodium monohydrogen phosphate dodecahydrate, di-Sodium hydrogen orthophosphate dodecahydrate

M-Clarity™ quality level = MQ300

1.06579.0500 1.06579.1000 1.06579.5000 1.06579.9025
1.06579.0500EA 65.3 EUR
1.06579.0500 1.06579.1000 1.06579.5000 1.06579.9025
Disodium hydrogen phosphate dodecahydrate 98.5-102.5% (by acidimetry), crystals, EMSURE® Ph. Eur., BP, JP, USP, Supelco®
di-Sodium hydrogen phosphate dodecahydrate
Formula: Na₂HPO₄·12H₂O
MW: 358,14 g/mol
Melting Pt: 35 °C
Density: 1,52 g/cm³ (20 °C)
Storage Temperature: Ambient
MDL Number: MFCD00149181
CAS Number: 10039-32-4
EINECS: 231-448-7
Merck Index: 13,08733

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Specification Test Results

Assay (alkalimetric) 99.0 - 102.0 %
Identity passes test
Appearance of solution passes test
Sodium Dihydrogene phospate ≤ 2.5 %
pH-value (5 %; water) 9.0 - 9.3
Chloride (Cl) ≤ 0.0005 %
Sulfate (SO₄) ≤ 0.005 %
Total nitrogen (N) ≤ 0.001 %
Heavy metals (as Pb) ≤ 0.0005 %
As (Arsenic) ≤ 0.00005 %
Cu (Copper) ≤ 0.0002 %
Fe (Iron) ≤ 0.0005 %
K (Potassium) ≤ 0.005 %
Pb (Lead) ≤ 0.0005 %
Reducing substances passes test
Loss on drying (130 °C) 57.0 - 61.0 %
Corresponds to ISO,Reag. Ph Eur passes test
Water (according to Karl Fischer) 57.0 - 61.0 %
Corresponds to Ph Eur, BP, USP, JP

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