Isoquinoline Introduction: also called benzopyridine, colorless crystals, soluble with a voriety of orgnic liquid, soluble in dilute acid; with water absorption, alkaline than quinoline strong; with similar fennel oil and anisole odor. Source : Quinoline 83%, Isoquinoline 15%, Methylquinoline 2%...Send Inquiry
also called benzopyridine, colorless crystals, soluble with a voriety of orgnic liquid, soluble in dilute acid; with water absorption, alkaline than quinoline strong; with similar fennel oil and anisole odor.
Quinoline 83%, Isoquinoline 15%, Methylquinoline 2% of the crude quinoline can be used as a source of isoquinoline, but generally cut in section 237.5-239.5 ° C after the crude quinoline segment, continue Cut 243-246 ° C distillation section, as a raw material for the extraction of isoquinoline. This fraction segment partially separated 13-28% of 2-methylquinoline and about 3.9% of quinoline in the hydrochloride form. The isoquinoline fraction is reacted with 98% sulfuric acid at 35% ° C. in an alcoholic solution to form the isoquinolinesulfonate. Upon cooling, the isoquinoline sulfonate crystallizes prior to its homolog sulfonate. After filtration, the product is recrystallized from 85% ethanol and then decomposed with 20% aqueous ammonia. After the resulting oil layer is washed with water, the distillate of 242-243 ° C is distilled to obtain the isoquinoline of more than 95% purity.
Refining method: The content of about 40% of the cut was added to cadmium nitrate, collecting the resulting precipitate. With a mixture of cadmium nitrate washing, steam distillation after treatment with 30% sodium hydroxide solution, the oil will be free from steam distillation to obtain pure. Yield 73.0% ~ 74.9%, melting point 23.7 ~ 25 ℃. In addition, 5A molecular sieves or anhydrous sodium sulfate can also be dried and then vacuum distillation method refined.
Colorless flaky crystal or liquid
Density (g / mL, 30/4 ° C)
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Boiling point (ºC, 99.1KPa)
Refractive index (30ºC)
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Generate heat (KJ / mol, liquid, 31ºC)
Specific heat capacity (KJ / (kg · K), 31ºC, constant pressure)
Vapor pressure (kPa, 63.5ºC)
Body expansion coefficient (K-1, 30ºC)
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The package of all our chemical products reaching up to the industry standard, we usually use sealed plastic drum for our liquid state products.
For the production of pesticides, pharmaceuticals, rubber accelerators, color film sensitizers, dyes and other products. For medicine, dyes, insecticides, anion exchange resins and other raw materials, iron preservatives, soluble phenolic resin curing agent. Addition compounds with metals can be used for the quantitative determination of nickel and cadmium and the qualitative determination of precious metals. In benzoyl reaction and α-olefin polymerization, isoquinoline can also be used as a catalyst.