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CAS 1 record

CAS 55-55-0

CAS 55-55-0 matches 1 EU annex record across Annex II–VI of Regulation 1223/2009.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 55-55-0
CAS 55-55-0PubChem CID 5930

Metol

IUPAC name
bis(4-(methylamino)phenol);sulfuric acid
Molecular formula
C14H20N2O6S
Molecular weight
344.39 g/mol
Exact mass
344.10420754 Da
Topological polar surface area
148.0 Ų
Hydrogen-bond donors
6
Hydrogen-bond acceptors
8
Covalent units
3
Defined stereocentres
0

Also known as

GrapholMetatylPhotolPictolArmolGenolVerolElon (developer)
16 more reported names
p-MethylaminophenolsulfateParamethylaminophenol sulfateMethyl-p-aminophenol sulfatep-Methylaminophenol sulphate (2:1)ElonD3W0VWG12MN-Methyl-4-hydroxyaniline hemisulfateJAROCOL PMAPBis(4-hydroxy-N-methylanilinium) sulphateCOLOREX PMPhenol, 4-(methylamino)-, sulfate salt (2:1)4-(Methylamino)phenol sulfate (2:1) saltNSC-148345RefChem:169360200-237-14-(Methylamino)phenol sulfate
Open full PubChem recordPubChem annotations3D structure image
External database identifiers

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Records for CAS 55-55-0

1 total
No records found for this CAS number.

How CAS 55-55-0 is used on this site

CAS 55-55-0 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 1 EU annex record shares this identifier, which helps you cross-check whether the same substance appears under one regulatory context or several.

Use this page when a supplier specification, SDS or raw-material dossier gives you CAS 55-55-0 and you need to see every linked Annex II–VI record in one place. The entry cards above are the quickest route to concentration limits, warnings, annex placement and product-type conditions.