在线观看视频免费完整版,人人超人人超碰超国产香蕉,国产色综合色产在线视频,欧洲亚洲色视频综合在线,欧洲亚洲色视频综合在线

№D501
CAS Rn:【41489-76-3】
Molecular weight: 180.16
Simple formula: C₉H₈O₄
Chemical structure formula:
SPECIFICATIONS:
Appearance : crystal
Colour : white
Melting point : 80-81℃
Purity : 98.0% min (HPLC)
Loss on drying : 0.5% max
Packing : In 25kg net drum with PE liners