国产又大又黄又粗,小SAO货边洗澡边CAO你,性欧美XXXXX老少交,JLZZJLZZ亚洲乱熟无码

N,N二甲基乙酰胺



色譜級HPLC
純度Purity(GC)≥99.9%
紅外光譜Identity(IR)Conforms(合格)
蒸發(fā)殘渣Residue on evaporating≤2.0mg/L
水分Water≤300ppm
酸度Acidity≤0.0002meq/g
堿度Alkalinity≤0.0002meq/g
透過率Transmission

-at 280nm ≥70%

-at 290nm ≥80%

-at 310nm ≥89%

-at 320nm ≥93%

-from 350nm≥99%