1.

Appearance

Crystalline powder of black colour

2.

Rhodium (Rh) content, %

18.5-21.2

3.

Sodium and potassium content (each), %, not more than

0.1

4.

Solubility in acetic acid with 4 atm. carbon dioxide addition at 100 °С, % , not less than

99,75

5.

Sulphur (S) content, %, not more than

0.1

6.

Sum of Br^- + Cl^-, %, not more than

0.1

7.

Particle size, μm, not more than

150