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Inorganic Salts

Potassium Dichromate Extra Pure

RA002124 CAS 7778-50-9 Extra Pure

Identity

Product code
RA002124
CAS number
7778-50-9
Grade
Extra Pure
Purity
99.5%
Molecular formula
K2Cr2O7
Molecular weight
294.18

Classification

Technical Data

Properties

PropertyValueUnit
Physical state at 20 °C Solid —
Colour Orange Crystalline —
Odour Odorless —
Melting point/ Freezing point [°C] 398 °C °C
Boiling point [°C] 500 °C °C
Density [g/cm3] 2.676 g/cm3 g/cm3
Solubility in water [% weight] 6.5 % %
Partition coefficient Log Pow octanol / water at 20°C 5 —

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

Specifications

ParameterSpecificationUnit Method
Appearance Orange crystalline powder — —
Assay Min 99.5 % % iodometric
Chloride (Cl) Max 0.005 % % —
Sulphate (SO4) Max 0.01 % % —
Calcium (Ca) Max 0.005 % % —
Sodium (Na) Max 0.2 % % —
Loss on drying (105 °C) Max 0.5 % % —

3 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 RA002124-PK-25KG
500 g RA002124-PK-500G
50 kg RA002124-PK-50KG
1 kg RA002124-PK-1KG
2.5 kg RA002124-PK-2.5KG