Quinoline is also known as benzopyridine, aza naphthalene, pyridine and benzo-parallel compounds, is a heterocyclic aromatic organic compounds. It is a colorless and hygroscopic liquid with strong odor at room temperature. Exposed to light, it will gradually turn pale yellow and brown. The molecular formula is C9H7N, slightly soluble in water, easily soluble in many organic solvents such as ethanol, ether and so on. There are two ways of combining quinoline and isoquinoline, respectively. They exist in coal tar and bone tar, and the crude quinoline obtained from coal tar contains about 4% isoquinoline. The melting point of isoquinoline is 26.5 C, the boiling point is 242.2 C (743 mm Hg column) and the density is 1.0986 g / cm 3 (20 C). The odor of isoquinoline is completely different from that of quinoline. Both quinolines are alkaline, isoquinoline is more alkaline than quinoline, and can form salts with strong acids, such as picrate and dichromate, and form quaternary ammonium salts with halogenated alkanes. Quinoline is highly aromatic, and the benzene ring is prone to electrophilic substitution at 5,8 pairs, such as 5-and 8-nitro and sulfonyl, when nitrated or sulfonated. Quinoline. The pyridine ring is partially stable, while the benzene ring is destroyed while the pyridine ring remains unchanged during oxidation. The infrared spectra of quinoline show a similar absorption peak to that of 1-methylnaphthalene at 3.27 micron, and that of isoquinoline is similar to that of naphthalene. The properties of isoquinoline are similar to that of quinoline. Nitration and sulfonation occur at the 5 position of benzene ring, while nucleophilic reaction occurs at the 1 position, such as reacting with sodium aminoacid to form 1-amino-isoquinoline, while quinoline is aminated at the 2 position. The acid sulfate of quinoline is soluble in ethanol, but the acid sulfate of isoquinoline is insoluble.Quinoline is toxic. Short-term exposure to quinoline vapors can lead to nasal, eye and respiratory erosion, as well as dizziness and nausea. The effect of prolonged exposure is uncertain, but quinoline is associated with liver injury.
Quinoline Product details:
English Name: Quinoline
English synonyms: 1-Benzaine; 1-Benzine; ai3-01241; B 500; b-500; Chinoleine; chinolin (Czech); Chinoline
Molecular formula: C9H7N
Molecular weight: 129.16
Melting point 17- 13 degree C (lit.)
The boiling point is 113-114 degrees C11 mm Hg (lit.).
Density 1.093 g/mL at 25 degree C (lit.)
Vapor density 4.5 (vs air)
The vapor pressure is 0.07 mm Hg (20 degree C).
Refractive index n20/D 1.625 (lit.)
Flash point 214 degree F
Storage conditions Store below +30 degree C.
1. Quinoline is used to prepare nicotinic acid and hydroxyquinoline drugs, cyanine blue pigment and photopigment, rubber accelerator and pesticide 8-hydroxyquinolone and other products. Rats were given oral LD50 for 460mg/kg.
2. Used as organic synthesis reagents, basic condensation agents and solvents.
3. Used as analytical reagent and solvent, and also for the separation of vanadate and arsenate.
4. Heart-strengthening agents can also be used as acids, solvents, preservatives, etc. The pharmaceutical industry for the production of nicotinic acid and 8-hydroxyquinoline drugs; printing and dyeing industry for the production of cyanine blue pigment and photosensitive pigment; rubber industry for the production of accelerators; agriculture for the production of 8-hydroxyquinoline copper and other pesticides.
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
Get medical aid immediately. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.
Storage: Store in a tightly closed container. Do not store in glass. Store in a cool, dry area away from incompatible substances.
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