See Also: nitracrine(medicine)

parting (sh) and nitracrine (medicine)


parting (sh)




In metallurgy, the separation of gold and silver by chemical or electrochemical means.

Gold and silver are often extracted together from the same ores or recovered as by-products from the extraction of Other metals. A solid mixture of the two, known as bullion or dore, can be parted by boiling in nitric acid. The silver is dissolved as silver nitrate, leaving a gold residue that is filtered off and washed; silver is precipitated out of solution by adding ferrous sulfate. This is the traditional method used in assaying the content of gold and silver samples.


nitracrine (medicine)


nitracrine
<chemical> Acridine antineoplastic agent used in mammary and ovarian tumours. It inhibits RNA synthesis.

Pharmacological action: antineoplastic agent, nucleic acid synthesis inhibitors.

Chemical name: 1,3-Propanediamine, N,N-dimethyl-N'-(1-nitro-9-acridinyl)-