Applications
Mercury(II) iodide is is used for preparation of Nessler′s reagent, used for detection of presence of ammonia. It is a semiconductor material, used in some x-ray and gamma ray detection and imaging devices operating at room temperatures. In veterinary medicine, it is used in blister ointments in exostoses, bursal enlargement, etc.

Solubility
Insoluble in water. Slightly soluble in alcohol, ether, acetone, chloroform, ethyl acetate, olive oil and castor oil.

Notes
Light sensitive. Store away from oxidizing agents.