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METOL For PhotoARaphic Purpose 4-Methylaminophenol Sulphate
The Environmental Working Group (EWG) lists methylparaben as being a low to moderate health hazard. However, the hazard is only in regards to allergic reactions or product usage exceeding the recommended level. The EWG lists methylparaben's risk of causing cancer and reproductive toxicity at 0 percent.
The Environmental Working Group (EWG) lists methylparaben as being a low to moderate health hazard. However, the hazard is only in regards to allergic reactions or product usage exceeding the recommended level. The EWG lists methylparaben's risk of causing cancer and reproductive toxicity at 0 percent.
The Environmental Working Group (EWG) lists methylparaben as being a low to moderate health hazard. However, the hazard is only in regards to allergic reactions or product usage exceeding the recommended level. The EWG lists methylparaben's risk of causing cancer and reproductive toxicity at 0 percent.
Metol is an excellent developing agent for most continuous tone developer applications, and it has been widely used in published developer formulas as well as commercial products.
Metol are trade names for the organic compound with the formula [HOC6H4NH2(CH3)]HSO4. It is the hydrogen sulfate (HSO4−) 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.