p-Methylaminophenol sulfate
Agent Name
p-Methylaminophenol sulfate
Alternative Name
Metol
CAS Number
55-55-0
Formula
C7-H9-N-O.1/2H2-O4-S
Major Category
Nitrogen Compounds
Synonyms
Paramethylaminophenol sulfate; Phenol, 4-(methylamino)-, sulfate salt (2:1); 4-(Methylamino)phenol sulfate; 4-(Methylamino)phenol sulfate (2:1) salt; Armol; Elon (VAN); Elon (developer); Genol; Graphol; Metatyl; Methyl-p-aminophenol sulfate; Metol; N-Methyl-4-hydroxyaniline hemisulfate; N-Methyl-p-aminophenol sulfate; Phenol, p-(methylamino)-, sulfate (2:1) (salt); Phenol, p-methylamino-, sulfate (salt); Photol; Pictol; Planetol; Rhodol; Rhodol (VAN); Verol; p-Methylaminophenol sulfate (VAN); p-Methylaminophenol sulphate (2:1); p-Methylaminophenolsulfate; Bis(4-hydroxy-N-methylanilinium) sulphate; Phenol, 4-(methylamino)-, sulfate (2:1); Phenol, 4-(methylamino)-, sulfate (2:1) (salt); [ChemIDplus] Monomethyl-p-aminopheol sulfate; p-Hydroxymethylaniline sulfate; Photo-Rex; [Merck Index] UN3077
Category
Amino Phenols
Description
Off-white crystalline solid; [CAMEO] White to beige odorless solid; [EC] Beige crystalline solid; [Aldrich MSDS]
Sources/Uses
Used to develop black-and-white photographs; [Kanerva, p. 1816] Used as photographic developer and to dye furs; [Merck Index] Used in oxidative hair dyes; [EC]
Comments
Allergic contact dermatitis in photographers; [Marks] An eye, respiratory tract, and mild skin irritant; A skin sensitizer; May have effects on the blood; [ICSC] Toxic by ingestion: nausea, weakness, cyanosis, vertigo, headache, and convulsions; [CAMEO] Causes somnolence, tremor, and changes in urine composition in oral lethal-dose studies of mice; Causes acute tubular necrosis and increased spleen weights in repeated, oral-dose studies of rats; [RTECS] 3% solution is not irritating to skin and mildly irritating to eyes; [EC] See "N-Methyl-4-aminophenol."
Biomedical References
Exposure Assessment
Explanatory Notes
The Guide in the Emergency Response Guidebook is for "Environmentally hazardous substances, solid, n.o.s."
Adverse Effects
Skin Sensitizer
Yes
Diseases, Processes, and Activities Linked to This Agent
Diseases
Occupational diseases associated with exposure to this agent:
Processes
Industrial Processes with risk of exposure: