C14H20N2O6S
344.39 g/mol
Dye & PigmentWarning
Metol
CAS55-55-0EC200-237-1
Category
Dye & Pigment
Compound Class
Amine
Primary Use
photographic developer and hair dye ingredient
Metol, also known as p-methylaminophenol sulfate, is a chemical compound used as a photographic developer for black-and-white photographs and as an ingredient in oxidative hair dyes.
black-and-white photographic developeroxidative hair dye ingredientfur dyeing agent
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Related Compounds
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Fluorescent Brightener 353
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fluorescent brightener for textiles
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yellow pigment for inks and coatings
ReferenceSame Category
3,3′-(1,4-Phenylenediimino)bis(4,5,6,7-tetrachloro-1H-isoindol-1-one)
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Pigment
ReferenceSame Category
Acid Black 52
CAS5610-64-0
Dye for nylon and wool
Safety Reference
Warning
H302Harmful if swallowed
H317May cause an allergic skin reaction
H373May cause damage to organs through prolonged or repeated exposure
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects
H319Causes serious eye irritation
Customs Tariff Classification
The international HS code for Metol (CAS 55-55-0) is 2922.29.
HS code (international, 6-digit)
2922.29
EU CN code (8-digit)
2922 29 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
bis(4-(methylamino)phenol);sulfuric acid
InChIKey
ZVNPWFOVUDMGRP-UHFFFAOYSA-N
SMILES
CNC1=CC=C(C=C1)O.CNC1=CC=C(C=C1)O.OS(=O)(=O)O
Synonyms (36)
- 4-(Methylamino)phenol sulfate
- Armol
- COLOREX PM
- ECOL(TM), >=98% (HPLC)
- Elon
- Elon (VAN)
- Elon (developer)
- Genol
- Graphol
- JAROCOL PMAP
- Metatyl
- Methyl-p-aminophenol sulfate
- Metol
- Paramethylaminophenol sulfate
- Photol
- Pictol
- Planetol
- Rhodol (VAN)
- Verol
- p-Methylaminophenolsulfate
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