1.

Appearance

Black-brown crystals

2.

Iridium content, %

38,0-45,0

3.

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

• Platinum, palladium, rhodium ruthenium, osmium, gold, silver

0,010

• Iron

0,020

• Sodium

0,030

• Platinum, palladium, rhodium, ruthenium, osmium, gold, silver (sum)

0,050

4.

n-pentanol insoluble substances, %, not more than

0,01