Quinaldine

Quinaldine

Names
IUPAC name 2-Methylquinoline
Other names Quinaldine, α-methylquinoline, chinaldine, khinaldin
Identifiers
CAS Number	91-63-4 Y
3D model (JSmol)	Interactive image
ChemSpider	13870160 Y
ECHA InfoCard	100.001.896
EC Number	202-085-1
PubChem CID	7060
InChI InChI=1S/C10H9N/c1-8-6-7-9-4-2-3-5-10(9)11-8/h2-7H,1H3 Y Key: SMUQFGGVLNAIOZ-UHFFFAOYSA-N Y InChI=1/C10H9N/c1-8-6-7-9-4-2-3-5-10(9)11-8/h2-7H,1H3
SMILES Cc1nc2ccccc2cc1
Properties
Chemical formula	C10H9N
Molar mass	143.19 g/mol
Appearance	colorless oil
Density	1.058 g/cm3
Melting point	−2 °C (28 °F; 271 K)
Boiling point	248 °C (478 °F; 521 K)
Solubility in water	Insoluble
Hazards
Main hazards	Harmful (Xn), Corrosive (C)
R-phrases (outdated)	R21/22 R34
NFPA 704	2 2 0
Flash point	79 °C (174 °F; 352 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N  (what is YN ?)
Infobox references

Quinaldine or 2-methylquinoline is an organic compound with the formula CH₃C₉H₆N. It is one of the methyl derivative of a heterocyclic compound quinoline. It is bioactive and is used in the preparation of various dyes. It is a colorless oil but commercial samples can be colored.

It is recovered from coal tar. 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.

Quinaldine is used in anti-malaria drugs, in manufacturing dyes, food colorants (e.g., Quinoline Yellows, pinacyanol), pharmaceuticals. It is the precursor to the pH indicator Quinaldine Red.

Quinaldine sulfate is an anaesthetic used in fish transportation. In some Caribbean islands it is used to facilitate the collection of tropical fish from reefs.

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