피부(또는 머리카락)에 묻으면 오염된 모든 의복은 벗거나 제거하시오 피부를 물로 씻으시오/샤워하시오.
P305+P351+P338
눈에 묻으면 몇 분간 물로 조심해서 씻으시오. 가능하면 콘택트렌즈를 제거하시오. 계속 씻으시오.
P403+P235
환기가 잘 되는 곳에 보관하고 저온으로 유지하시오.
P405
밀봉하여 저장하시오.
P501
...에 내용물 / 용기를 폐기 하시오.
NFPA 704
2
2
0
3,4-Difluoroanisole C화학적 특성, 용도, 생산
화학적 성질
CLEAR COLOURLESS LIQUID
Synthesis
The method for preparing 3,4-difluoroanisole includes the steps that compound 3,4-difluorophenol is dissolved in acetonitrile, potassium carbonate is weighed, methyl iodide is dripped, and the mixture is reacted overnight at an indoor temperature; thin-1ayer chromatography is carried out on the next day, and it is discovered that the raw materials are completely reacted; reaction liquid is poured into water to be fully stirred, the lower layer organic phase is separated, then dichloromethane and water are added, and full washing and separation are carried out; afterwards, washing with water is conducted twice, and the organic phase is separated, dried and subjected to atmospheric distillation; the product, dichloromethane and residual acetonitrile are azeotropic, a vacuum pump is used for conducting reduced pressure distillation from the temperature of 60 DEG C, colorless clear liquid is steamed out when the temperature is raised to 120 DEG C, and accordingly the compound 3,4-difluoroanisole is obtained.
