Disodium hydrogen phosphate Dodecahydrate

EP, USP + LEC + Microbiological requirements

CAS #:


Molecular Formula:

Na2HPO4 . 12H2O


Disodium Hydrogen Phosphate, Disodium Phosphate

Molecular Weight:

358.14 g/mol


Sodium Phosphate Dibasic, Dodecahydrate, also known as Disodium hydrogen phosphate, can be is used to adjust pH or as an anti-caking additive in powdered products. It is an electrolyte replenisher and with radio-protective activity.

Characters Unit Specification
Identity A (EP) Correlates to test
Identity B (EP) Correlates to test
Identity C (EP) Correlates to test
Identity D (EP) Correlates to test
Identity A (USP) Correlates to test
Identity B (USP) Correlates to test
Appearance of solution (EP) Correlates to test
Reducing substances Correlates to test
Assay (EP) % 98.5 - 102.5
Assay (USP) % 98.0 - 100.5
Insoluble substances % ≤ 0.4
Mono-Sodium phosphate % ≤ 2.5
Chloride mg/kg ≤ 200
Sulphate mg/kg ≤ 500
Arsenic mg/kg ≤ 2
Iron mg/kg ≤ 20
Heavy metals mg/kg ≤ 10
Water (EP) % 57.0 - 61.0
Loss on drying (USP) % 55.0 - 64.0
Bacteria Endotoxins IU/g ≤ 5
TAMC CFU/g ≤ 50
TYMC CFU/g ≤ 10
Escherichia coli CFU/g
Pseudomonas aeruginosa CFU/g
Staphylococcus aureus CFU/g
Salmonella CFU/10g

Shelf Life/Retest Date: Di-Sodium hydrogen phosphate dodecahydrate CAS No. 10039-32-4 raw material can be kept for at least 1 years if stored in a cool and dry place.

Storage/Shipping Conditions:

  • Keep container tightly closed in a cool, well-ventilated place.
  • Storage temperature recommended: < 25°C

Pack Sizes: 5 Kg

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