a)Appearance：colorless or light yellow clear liquid

b)Density( )：＝1.274-1.278

c)Refrangibility( )：=1.439-1.440

d)Purity：≥98.0％（Gas chromatography）

e)Relevant substance：Total contaminant≤2％

f) Packing: 25kg or 35 kg net plastic drum

g) Storage: Preserve in tight, light-resistent containers