Methylene Blue, Anhydrous

Molecular Formula
C16H18ClN3S
Catalog Number
M3271
Supplier/Brand
Spectrum Chemical
CAS Number
61-73-4

Methylene Blue, Anhydrous 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: 3,7-bis(Dimethylamino)phenothiazin-5-ium Chloride ; Ehrlichs Reagent III

Shipping Information


Tariff No. 3204134500

Storage Information

LIGHT SENSITIVE: Keep tightly closed in light-resistant containers.

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2023