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Inorganic Salts

Potassium Phosphate Dibasic Anhydrous Extra Pure

RA002169 CAS 7758-11-4 Extra Pure

Identity

Product code
RA002169
CAS number
7758-11-4
Grade
Extra Pure
Purity
98%
Molecular formula
K2HPO4
Molecular weight
174.18

Classification

Technical Data

Properties

PropertyValueUnit
Physical state at 20 °C Solid —
Colour White crystalline —
Odour Odorless —
pH value 8.8 —
Melting point/ Freezing point [°C] Min 465 °C °C
Decomposition point [°C] Min 465 °C °C
Density [g/cm3] 2.338 g/cm3 g/cm3
Solubility in water [% weight] 1600 g/L g/L

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

Specifications

ParameterSpecificationUnit Method
Appearance White hygroscopic crystalline powder — —
Heavy metal Max 0.001 % % —
Iron (Fe) Max 0.001 % % —
Arsenic (As) Max 0.0002 % % —
Sodium (Na) Max 0.5 % % —
Potassium hydrogen phosphate (KH2PO4) Max 3.0 % % —
KMnO4 reducing matter Max 0.04 % % —
Loss on drying (130 °C) Max 1 % % —
Assay 98 - 100.5 % % acidimetric
pH 8.5 - 9.6 — —
Appearance of solution Passes test — —
Insoluble matter in water Max 0.2 % % —
Carbonate Passes test — —
Chloride (Cl) Max 0.02 % % —
Fluoride (F) Max 0.001 % % —
Sulphate (SO4) Max 0.1 % % —

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 RA002169-PK-25KG
500 g RA002169-PK-500G
50 kg RA002169-PK-50KG