16920-56-2 Usage
Chemical Properties
Black Crystalline Powder
Uses
Different sources of media describe the Uses of 16920-56-2 differently. You can refer to the following data:
1. Black pigment (porcelain decoration). The iridium (III) salt is also known: K3IrCl6, greenishyellow.
2. Iridium potassium chloride (K2IrCl6) is used as a black pigment to make black porcelain
kitchen and bathroom fixtures.
3. Potassium Hexachloroiridate(IV) is a reagent with biocatalytic activity
Purification Methods
Crystallise it from hot aqueous solution containing a few drops of HNO3 to keep it in the oxidised state. It forms small shiny red-black octahedral crystals which are dried at 100o and give a red powder on grinding [Grube in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol II pp 1593-1594 1965].
Check Digit Verification of cas no
The CAS Registry Mumber 16920-56-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,6,9,2 and 0 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 16920-56:
(7*1)+(6*6)+(5*9)+(4*2)+(3*0)+(2*5)+(1*6)=112
112 % 10 = 2
So 16920-56-2 is a valid CAS Registry Number.
InChI:InChI=1/6ClH.Ir.2K/h6*1H;;;/q;;;;;;+4;2*+1/p-6/rCl6Ir.2K/c1-7(2,3,4,5)6;;/q-2;2*+1
