酰氯化和氯化都属于危险工艺，操作难度较大，产品存在3～5%的4位异构体

Cloruri și procesul de clorurare sunt clasificate ca periculoase operațiune, dificilă, prezența a 3 până la 5% din produsul de patru izomeri, mai puțin de 0,5% sau mai puțin pentru a obține poziția 2 a produsului, recristalizată din nou nevoie. Avantajele apelor uzate este relativ mic, cu toate acestea, dioxid de sulf epurarea apelor uzate are încă unele dificultăți

Yl chloride and chlorination are dangerous processes, the operation is difficult, the product exists 3 to 5% of the 4-bit isomer, to get less than 0.5% of the 2-bit products, need to re-crystallize treatment. The advantage is that the wastewater is relatively small, but sulfur dioxide wastewater treatment is still difficult

Acyl chlorination and chlorination are dangerous processes, which are difficult to operate. There are 3-5% 4-position isomers in the product. To obtain 2-position products less than 0.5%, recrystallization is needed. The advantage is that the wastewater is relatively small, but the treatment of sulfur dioxide wastewater is still difficult<br>