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.)
Flash point :214 °F
storage temp. :Store below +30°C.
solubility :6g/l
pka :4.9(at 20℃)
form :Liquid
color :Purple to dark grey
PH :7.3 (5g/l, H2O, 20℃)
Odor :Strong, unpleasant.
explosive limit :1.2-7%(V)
Odor Type :medicinal
Water Solubility :slightly soluble
Sensitive :Light Sensitive & Hygroscopic
Merck :14,8068
BRN :107477
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.
InChIKey :SMWDFEZZVXVKRB-UHFFFAOYSA-N
LogP :2.04 at 22℃
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)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H301 Toxic if swalloed Acute toxicity,oral Category 3 Danger P264, P270, P301+P310, P321, P330,P405, P501 H312 Harmful in contact with skin Acute toxicity,dermal Category 4 Warning P280,P302+P352, P312, P322, P363,P501 H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362 H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P H341 Suspected of causing genetic defects Germ cell mutagenicity Category 2 Warning P201,P202, P281, P308+P313, P405,P501 H350 May cause cancer Carcinogenicity Category 1A, 1B Danger H411 Toxic to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 2
Precautionary statements:	P202 Do not handle until all safety precautions have been read and understood. P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P301+P310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.