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Inorganic Salts

Sodium Phosphate Dibasic Dodecahydrate AR

RA003430 CAS 10039-32-4 AR

Identity

Product code
RA003430
CAS number
10039-32-4
Grade
AR
Purity
99%
Molecular formula
Na2HPO4.12H2O
Molecular weight
358.14

Classification

Technical Data

Properties

PropertyValueUnit
Physical state at 20 °C Solid —
Colour Colorless crystals —
Odour Odorless —
pH value 8.4 - 9.6 —
Melting point/ Freezing point [°C] 34 °C °C
Density [g/cm3] 1.5 g/cm3 g/cm3
Solubility in water [% weight] 35.8 g/L g/L

These are recorded catalogue property values. Product specification limits, where available, are listed under Specifications.

Specifications

ParameterSpecificationUnit
Appearance Colourless crystals —
Arsenic (As) Max 0.00005 % %
Assay (as Na2HPO4.12H2O) Min 99.0 % %
pH (5% solution; 20°C) 9.1 - 9.4 —
Chloride (Cl) Max 0.005 % %
Sulphate (SO4) Max 0.005 % %
Total nitrogen (N) Max 0.001 % %
Heavy metal Max 0.0005 % %
Iron (Fe) Max 0.0005 % %
Potassium (K) Max 0.005 % %

4 grades of this substance are listed. Each grade is a separate product with its own specifications, pack sizes and documents.

Packaging

Pack size SKU
25 kg RA003430-PK-25KG
500 g RA003430-PK-500G
50 kg RA003430-PK-50KG