Quinoline CAS 91-22-5

Quinoline is also known as benzopyridine or naphthylpyridine. It is a compound formed by the combination of pyridine and benzene, and is a heterocyclic aromatic organic compound. At room temperature, it is a colorless hygroscopic liquid with a strong odor. When exposed to light, it gradually turns pale yellow and further turns brown. Its molecular formula is C9H7N. It is slightly soluble in water and easily soluble in many organic solvents such as ethanol and ether. There are two types of linkage, known as quinoline and isoquinoline. They are present in coal tar and bone tar. The crude quinoline obtained from coal tar contains approximately 4% of isoquinoline. The melting point of isoquinoline is 26.5℃, the boiling point is 242.2℃ (743 mmHg), and the density is 1.0986 g/cm³ (20℃). Its odor is completely different from that of quinoline.

Quantity:
Availability:





Inquire

Model:
91-22-5
Brand:
futurechemical
Code:
91-22-5

Product Description

Quinoline Basic information
Product Name:	Quinoline
CAS:	91-22-5
MF:	C9H7N
MW:	129.16
EINECS:	202-051-6
Mol File:	91-22-5.mol
Quinoline Chemical Properties
Melting point	-17--13 °C (lit.)
Boiling point	113-114 °C/11 mmHg (lit.) 237 °C (lit.)
density	1.093 g/mL at 25 °C (lit.)
vapor density	4.5 (vs air)
vapor pressure	0.07 mm Hg ( 20 °C)
refractive index	n20/D 1.625(lit.)
Fp	214 °F
storage temp.	Store below +30°C.
solubility	6g/l
pka	4.9(at 20℃)
form	Liquid
color	Purple to dark grey
Odor	Strong, unpleasant.
PH	7.3 (5g/l, H2O, 20℃)
Odor Type	medicinal
biological source	synthetic
explosive limit	1.2-7%(V)
Water Solubility	slightly soluble
Thermal Conductivity	0.144 W/(m·K) at 25 ℃
Sensitive	Light Sensitive & Hygroscopic
Merck	148,068
BRN	107477
Henry's Law Constant	5.9×100 mol/(m3Pa) at 25℃, Duchowicz et al. (2020)
Dielectric constant	2.6（-180℃）
Stability:	Stable. Incompatible with strong acids, strong oxidizing agents. May discolour on exposure to light. Hygroscopic - protect from moisture. Reacts violently and unpredictably with some materials, especially strong oxidizing agents.
Major Application	cleaning products
	cosmetics
	flavors and fragrances
	food and beverages
	personal care
InChI	1S/C9H7N/c1-2-6-9-8(4-1)5-3-7-10-9/h1-7H
InChIKey	SMWDFEZZVXVKRB-UHFFFAOYSA-N
SMILES	c1ccc2ncccc2c1
LogP	2.04 at 22℃
Surface tension	43.12mN/m at 20°C
CAS DataBase Reference	91-22-5(CAS DataBase Reference)
IARC	2B (Vol. 121) 2019
NIST Chemistry Reference	Quinoline(91-22-5)
EPA Substance Registry System	Quinoline (91-22-5)