Ключевые слова:
Photographic chemicals, Photographic materials, Photography, p-Methyl aminophenol sulfate, Purity, Solubility, Colour, Assay, Volumetric analysis, Testing conditions, Determination of content, Chemical analysis and testing, Nitroso compounds, Melting point, Temperature measurement, Spectrophotometry, Infrared radiation, Aminophenol, Solubility test methods, Nitrogen inorganic compounds