Methylene Blue, C.I. 52015

Molecular Formula
C16H18N3SCl•3H2O
Catalog Number
ME140
Supplier/Brand
Spectrum Chemical
CAS Number
7220-79-3

Methylene Blue, C.I. 52015 is a heterocyclic aromatic solid that is an odorless powder that has a dark green tinge and turns to blue when mixed with water. It is used in aquaculture and by tropical fish hobbyists as a treatment for fungal infections and has many experimental pharmaceutical drug applications. Ungraded products supplied by Spectrum are indicative of a grade suitable for general industrial use or research purposes and typically are not suitable for human consumption or therapeutic use.


Synonyms: Basic Blue 9 ; Methylthioninium Chloride ; Tetramethylthionine Chloride ; 3,7-Bis(dimethylamino)phenazathionium Chloride

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Tariff No. 3204134500

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2023