国产男男gay做爰I国产一区私人高清影院I国产午夜一级毛片I精品国偷自产在线I亚洲精品影视在线观看I成年人看片I91在线看视频I欧美另类网站

2,4-二氟苯胺
Foreign name: 2,4-Difluoroaniline
Chemical formula C6H5F2N CAS Number: 367-25-9
Properties: light yellow oily substance.
Content: ≥99.5%
Moisture: ≤0.2%
Freezing point: -7.5～-7℃
Boiling range: 169-171℃
Density: 1.20-1.27 g/mL
Storage: room temperature, dark, cool and dry place, sealed and stored