91-22-5 Benzopyridine Medical Intermediate C9H7N , Quinoline , Benzo Pyridine For Pharmaceutical Ind - Product

Other Specification : 91-22-5 Benzopyridine Medical Intermediate C9H7N , Quinoline , Benzo Pyridine For Pharmaceutical Industry Quick Detail: A Colorless Liquid. With Alcohol, Ether And Carbon Disulfide Miscible, Soluble In Water, Insoluble In Cold Water. With Moisture Absorption, Can Absorb Moisture From The Air, And Water Content Of 22%, With The Steam Can Be Volatile. Description: - - - - Molecular Formula: Molecular Weight: | C9H7N 129.16 | CAS: | 91-22-5 | Melting Point: | -15.6 | Boiling Point: | 238.05,114(2.27kPa) | Density Ratio: | 1.0929(20/4) | Refractive Index: | 1.62683 | Flash(ing) Point: | 101 | - - - - Chemical Property Quinoline Structure In Case Of Fire, High Heat Combustible. With The Oxidant React. Thermal Decomposition Of Nitric Oxide Release Toxic Smoke. Combustion Produces Carbon Dioxide, Carbon Monoxide, Decomposed Products Of Nitric Oxide. The Preparation Method Quinoline Can Be Extracted From Coal Tar Washing Oil Or Naphthalene Oil. Fraction Of Naphthalene Oil And Wash Oil Fraction Using Dilute Sulfuric Acid Washing, Get Quinoline Sulfate Based Solution, The Removal Of Neutral Oil And Impurity With Steam, And Then Alkali Or Ammonia Decomposition. The Separated Crude Quinoline And Its Homologues By Dehydration With High Yield, Distillation Tower Distillation, Cut The Boiling Segment Is 237.5-239.5 Fraction Can Be Obtained, Crude Quinoline Containing Quinoline, Isoquinoline 15% 83%. The Crude Quinoline Concentration Of Phosphoric Acid Water Solution 60%, Cooling And Filtering, To Obtain The Quinoline Phosphate Crystal. Alkali Decomposed, The Purity Of The Product Is 90%-92%. Repeated Treatment With Phosphoric Acid, Recrystallization, The Purity Of 98%-99% Can Be Quinoline. Synthesis Of Quinoline Most Representative Method Is The Intrinsic

View Profile