This section is from the book "A Text-Book Of Pharmacology, Therapeutics And Materia Medica", by T. Lauder Brunton. Also available from Amazon: A text-book of pharmacology, therapeutics and materia medica.
Solubility. - Sparingly soluble in water, readily soluble in chloride of ammonium.
Reaction. - When strongly heated it first fuses and then is decomposed, emitting violet vapours of iodine, and leaving a citron-yellow residue.
Tests. - On triturating 1 part of the salt with 2 parts of chloride of ammonium in a porcelain mortar, and adding 2 parts of water, a colourless liquid should result (absence of, and difference from, chromate). This liquid, diluted with water, affords a white precipitate with diluted sulphuric acid, and a black one with hydrosulphuric acid. If all the lead has been precipitated from a portion of the solution by the last-named reagent, the filtrate should leave no residue on evaporation and gentle ignition (absence of zinc, alkalis, or alkaline earths).