Metol is a chemical compound used in which activity or hobby?
Metol medication. The use of Metol in highly caustic solutions and the presence of other materials in darkrooms that have been implicated in dermatitis—such as hexavalent chromium salts—may exacerbate some health impacts. Metol Metol is the organic compound with the formula [HOCHNH(CH)]HSO. It is the hydrogen sulfate (HSO) salt of the protonated derivative of N-methylaminophenol. This colourless salt is a popular photographic developer used in black & white photography. Several methods exist for the preparation of N-methylaminophenol. It arises by decarboxylation of N-4-hydroxyphenylglycine (Glycin). It can be obtained by reaction of hydroquinone with methylamine. Metol is an excellent developing agent for
Metol Metol, and therefore most Metol developers are supplied in dry chemical mix. A developer containing both Metol and hydroquinone is called an MQ developer. This combination of agents provides greater developer activity since the rate of development by both agents together is greater than the sum of rates of development by each agent used alone (superadditivity). This combination is very versatile; by varying the quantities of metol, hydroquinone, and restrainer, and adjusting the pH, the entire range of continuous tone developers can be made. Therefore, this form of metol replaced most other developing agents except for hydroquinone, Phenidone (which is