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4-(Methylamino)phenol sulfate is a photographic developer used in black and white photography. It is also used as tone developers in developing agents. Further, it is used in oxidative hair dye formulations.
Chen, T.; Pratt, M. D. Photo Developer Allergic Contact Dermatitis in a Photographer Following Paraphenylenediamine Sensitization from a Temporary Henna Tattoo. J. Cutan. Med. Surg. 2015, 19 (1), 73-76.
Nagul, E. A.; McKelvie, I. D.; Kolev, S. D. The nature of the salt error in the Sn(II)-reduced molybdenum blue reaction for determination of dissolved reactive phosphorus in saline waters. Anal. Chim. Acta 2015, 896, 120-127.
Hazard Statements: H302-H317-H373
Harmful if swallowed. May cause an allergic skin reaction. May cause damage to organs through prolonged or repeated exposure.
Precautionary Statements: P260-P280g-P301+P312a-P363-P321-P501a
Do not breathe dust/fume/gas/mist/vapours/spray. Wear protective gloves. IF SWALLOWED: Call a POISON CENTER/doctor if you feel unwell. Wash contaminated clothing before reuse. Specific treatment (see label). Dispose of contents/container in accordance with local/regional/national/international regulations.