Quinaldine

It is one of the methyl derivatives of the heterocyclic compound quinoline.

It can be prepared from aniline and paraldehyde via Skraup synthesis or from aniline and crotonaldehyde via Doebner-von Miller variation of the Skraup reaction.

[2] Quinaldine has critical point at 787 K and 4.9 MPa and its refractive index is 1.8116.

[citation needed] Quinaldine is used in manufacturing anti-malaria drugs, dyes and food colorants (e.g., Quinoline Yellows, pinacyanol).

[3] In some Caribbean islands it is used to facilitate the collection of tropical fish from reefs.

NFPA 704 four-colored diamond Health 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g. chloroform 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 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogen Special hazards (white): no code
Quinoline Yellow is a popular dye derived from quinaldine.
Quinaldine Red , a pH indicating dye.