Aniline Yellow

Aniline Yellow was the first azo dye.

The second azo dye was Bismarck Brown in 1863.

Aniline Yellow was commercialized in 1864 as the first commercial azo dye, a year after aniline black.

Aniline Yellow is used in microscopy for vital staining,[1] in pyrotechnics for yellow colored smokes, in yellow pigments and inks including inks for inkjet printers.

It is also used in insecticides, lacquers, varnishes, waxes, oil stains, and styrene resins.

Skeletal formula
Skeletal formula
Ball-and-stick model
Ball-and-stick model
NFPA 704 four-colored diamond Health 0: Exposure under fire conditions would offer no hazard beyond that of ordinary combustible material. E.g. sodium chloride Flammability 2: Must be moderately heated or exposed to relatively high ambient temperature before ignition can occur. Flash point between 38 and 93 °C (100 and 200 °F). E.g. diesel fuel Instability 1: Normally stable, but can become unstable at elevated temperatures and pressures. E.g. calcium Special hazards (white): no code