Character: It is no color or shallow yellow liquid, with special perfume of fructus forsythiae, it is taste a little bitter and hot.
Specific Gravity: 0.8596-0.8703
Refraction: 1.4670-1.4750
Optical Rotation: -18¡ã- +6¡ã
Content: 32% phillyrin, upon 99.9% volatility oil
The package: Aluminum bottle packing, 2.5kg/bottle, 5kg/bottle, 10kg/bottle.