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It is the binary cyanide of gold(I). It is an odourless, tasteless yellow solid. [4] Wet gold(I) cyanide is unstable to light and will become greenish. [4] Gold(I) cyanide itself is only of academic interest, but its derivative dicyanoaurate is an intermediate in gold cyanidation, the extraction of gold from its ores. [5]
A 1997 review (Suarez-Almazor ME, et al) [6] reports that treatment with intramuscular gold (parenteral gold) reduces disease activity and joint inflammation. Gold-containing drugs taken by mouth are less effective than by injection. Three to six months are often required before gold treatment noticeably improves symptoms.
Potassium dicyanoaurate (or potassium gold cyanide) is an inorganic compound with formula K[Au 2]. It is a colorless to white solid that is soluble in water and slightly soluble in alcohol . The salt itself is often not isolated, but solutions of the dicyanoaurate ion ( [Au(CN) 2 ] − ) are generated on a large scale in the extraction of gold ...
Fairbank's Gold Dust washing products was a line of all-purpose cleaning agents researched and developed by the N. K. Fairbank Manufacturing Company. First introduced to the American consumer in 1889, Gold Dust Washing Powder became a success due in large part to its low selling price and bright, eye-catching packaging.
A canister of Comet cleanser. Comet is an American brand of scouring powders and other household cleaning products manufactured by KIK Custom Products Inc. The brand was introduced in 1956 by Procter & Gamble (P&G) and sold to Prestige Brands in 2001. [1]
Cleaning agents or hard-surface cleaners are substances (usually liquids, powders, sprays, or granules) used to remove dirt, including dust, stains, foul odors, and clutter on surfaces. [1] Purposes of cleaning agents include health , beauty, removing offensive odors, and avoiding the spread of dirt and contaminants to oneself and others.
John Stewart MacArthur developed the cyanide process for gold extraction in 1887. The expansion of gold mining in the Rand of South Africa began to slow down in the 1880s, as the new deposits found tended to contain pyritic ore. The gold could not be extracted from this compound with any of the then available chemical processes or technologies. [5]
In gold mining, KCN forms the water-soluble salt potassium gold cyanide (or gold potassium cyanide) and potassium hydroxide from gold metal in the presence of oxygen (usually from the surrounding air) and water: 4 Au + 8 KCN + O 2 + 2 H 2 O → 4 K[Au(CN) 2] + 4 KOH. A similar process uses NaCN to produce sodium gold cyanide (NaAu(CN 2)).