The oxidising alloying with peroxids or electrochemical methods are the basic methods for processing of iridium and alloys on its basis, as a result of its high chemical firmness. Application possibility of fluorooxidizers on a basis of bromine trifluorine for full express and simple in hardware registration of transfer of iridium in the soluble form for the subsequent affinage is shown. Kinetic laws of speed of dissolution from temperature are investigated. Calculations of a kinetic constant of reaction are carried out and specific speed of dissolution is defined.