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.
Characters. - A heavy lemon-yellow powder, permanent in the air, odourless and almost tasteless.
Tests. - As it is a mercuric oxysulphate, it should be soluble in 20 parts of hydrochloric acid without residue (no mercurous salt).
Uses. - The yellow oxysulphate has been used under the name of Turpeth mineral as an errhine in chronic ophthalmia. It is a prompt emetic, and is sometimes preferred to other emetics in croup, as it is quick and certain, and does not produce depression nor purging. The dose for a child two years old is 2-5 grains (O.13-0.33 gm.), repeated in fifteen minutes if necessary. It may also be used as an alterative.