Cartap environment-friendly type preparing method
A technology of cartap and thiocyanide, applied in botany equipment and methods, biocides, plant growth regulators, etc., can solve the problems of increasing the difficulty and cost of wastewater treatment, complex process operation, serious environmental pollution, etc., and achieve Good product quality stability, meeting a large number of requirements, high yield effect
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Embodiment 1
[0024] The ethylene dichloride solution (mass content is 25%) of the thiocyanide of 0.2mol and the water of 2.8mol, 0.5g benzyl trioctyl ammonium chloride catalyst are placed in the reactor together, feed hydrogen chloride gas then, The feed rate is 0.35mol, the reaction temperature is controlled at 20°C, and the hydrolysis reaction is carried out for 20 hours, and the reaction formula is
[0025]
[0026] Finally, the obtained crude cartap was recrystallized with water to obtain 0.19 mol of cartap product.
Embodiment 2
[0028] The toluene solution (mass content is 30%) of the thiocyanide of 0.2mol and the water of 2.2mol, 0.5g butyl trioctyl ammonium bromide catalyst are placed in reactor together, then pass into hydrogen chloride gas, pass into amount The reaction temperature is controlled at -10° C. for 0.5 mol, and the hydrolysis reaction is carried out for 15 hours. Finally, the crude cartap obtained is recrystallized with water to obtain 0.186 mol of cartap product.
Embodiment 3
[0030] The carbon tetrachloride solution (mass content is 20%) of the thiocyanide of 0.2mol and the water of 2.5mol, 0.4g benzyltributylammonium chloride catalyst are placed in the reaction kettle together, feed hydrogen chloride gas then, The feeding amount is 0.4 mol, the reaction temperature is controlled at 10° C., and the hydrolysis reaction is carried out for 24 hours. Finally, the obtained cartap crude product is recrystallized with water to obtain about 0.188 mol of cartap product.
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