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Inorganic Salts

Ammonium Dichromate Extra Pure

RA000558 CAS 7789-09-5 Extra Pure

Identity

Product code
RA000558
CAS number
7789-09-5
Grade
Extra Pure
Purity
99%
Molecular formula
(NH4)2Cr2O7
Molecular weight
252.06

Classification

Technical Data

Properties

PropertyValueUnit
Physical state at 20 °C Solid —
Oxidising properties The substance or mixture is classified as oxidizing with the subcategory 2 —
Colour Orange to red —
Odour Odorless —
pH value 3 - 4 —
Melting point/ Freezing point [°C] 170 °C °C
Decomposition point [°C] 170 °C °C
Auto-ignition temperature [°C] 218 °C °C
Density [g/cm3] 2.15 g/cm3 g/cm3
Solubility in water [% weight] 360 g/L g/L

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

Specifications

ParameterSpecificationUnit Method
Appearance Orange colored crystalline powder — —
Assay Min 99 % % iodometric
Chloride (Cl) Max 0.01 % % —
Sulphate (SO4) Max 0.05 % % —

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 RA000558-PK-25KG
500 g RA000558-PK-500G
50 kg RA000558-PK-50KG
5 kg RA000558-PK-5KG