1.

Appearance

Clear red-brown solution

2.

Rhodium (Rh) content, %,

9±1

3.

Impurities based on rhodium content, %, not more than:

• Platinum, palladium, iridium, ruthenium, arsenic, potassium (each)

0,005

• Gold, silver, lead (each)

0,002

• Calcium, silicon, aluminum (each)

0.020

• Iron, magnesium (each)

0.010

• Copper

0.001

• Chlorine

0,200

• Silver, gold, nickel, lead, zinc, magnesium, chromium, antimony (sum)

0.050

4.

Free nitric acid (HNO₃) content, %, not less than

5,0

1.

Rhodium (Rh) content, %

9±2

2.

Impurities based on rhodium content, %, not more than:

• Platinum, palladium, ruthenium, arsenic, copper (each)

0,005

• iridium lead (each)

0,010

• Calcium, silicon, aluminum (each)

0,02

• Iron

0,05

• Chlorine

0,4

• Silver, gold, nickel, lead, zinc, magnesium, chromium, manganese, antimony, bismuth (sum)

0,05

3.

Free nitric acid (HNO₃) content, %, not less than

5,0