Synthesis of Chloroformate Hexadecyl Ester Process Optimization and Experimental Study on Thermal Stability
In order to explore the optimal process conditions for preparing cetyl chloroformate using phosgene and cetyl ester as raw materials,the effects of reaction temperature,reaction solvent,material ratio,and phosgene dosage on product purity were investigated.The experimental results show that under the conditions of reaction temperature 20℃-30℃,m(cetyl alcohol):m(cetyl chloroformate)=1∶1,and the introduction of 1.2-1.4 equivalents of phosgene,a product with a purity of 99 can be prepared or more,chroma below 50,w(cetyl alcohol)less than 0.5％,high-quality cetyl chloroformate.Based on the optimized production process,the factors affecting the chromaticity of cetyl chloroformate were explored and an operation method to reduce the chromaticity was proposed.Through research on the thermal stability of cetyl chloroformate,metal ion thermal stability and thermal decomposition kinetics,the control of safety risks in the production process has been further improved,and the safe industriali-zation of long alkane chain chloroformate products has been further improved.Provide certain technical support and guidance for production.
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