Green to brown liquid, with special aroma of aucklandiae, plaster and musk. The relative density (d15) is 0.953 to 0.990, the refractive index (nD20) is 1.4861 to 1.5021, the acid value is about 5.0, and the Ester value is about 130. 1ml samples can be dissolved in 0.5~1.5ml,90% ethanol. It has the effects of expelling wind, excitement and antispasmodic.