적하가 완료된 후 1시간 동안 0℃ 내지 5 ℃에서 반응을 수행하고, 상온으로 온도를 올려 1시간 동안 반응을 시킨다.
After the dropping is completed, the reaction is carried out at 0°C to 5°C for 1 hour, and the temperature is raised to room temperature, and the reaction is performed for 1 hour.