The best method, however, of imitating the yellowish tone of old paper is to stain the inlay with potassium permanganate.
potassium permanganate is occasionally used to produce dyeings of a brown shade on furs.
Solutions of potassium permanganate may be kept for a month or so without much change.
A cold solution of 10 to 20 grams of potassium permanganate per liter of water is brushed on to the hair, which is then dried.
The skins are immersed in a 0.1% solution of the crystals of potassium permanganate, until the hair acquires a deep brown color.
Precipitate a strong solution of silver nitrate by means of a concentrated solution of potassium permanganate.
Two salts are in common use for this purpose, potassium permanganate and potassium bichromate.
Chlorine and nitric acid oxidize it to benzil; chromic acid mixture and potassium permanganate, to benzoic acid and benzaldehyde.
The effect of alcohol in neutralizing carbolic acid attracted as much attention as did potassium permanganate for opium.
Table III shows chlorine to be approximately five times as active as potassium permanganate when compared on this basis.
potassium permanganate n.
A dark purple crystalline compound used as an oxidizing agent and disinfectant and in deodorizers and dyes.
|potassium permanganate |
A dark purple crystalline compound used as an oxidizing agent and disinfectant and in deodorizers and dyes. Chemical formula: KMnO4.