26050, is a red diazo dye.

[1][2][3] Chemically it is N-ethyl-1-[[p-(phenylazo)phenyl]azo]-2-naphthalenamine.

It is soluble in oils and insoluble in water.

It is used in biology for staining, and in industry as one of the fuel dyes.

It can be also present in red laser toners.