Rhubarb Extract

【Latin Name】Rheum palmatum L

【CAS No.】008016-55-5

【Appearance】yellow fine powder

【Test Method】HPLC

【Source】In the branch, bark, leaf of the apple tree

【Extract Method】Alcohol/water

【Applicable field】Medical trade

【Assay】Emodin 10%、20%、50%、80%、90%、95%、98%  30:1  10:1

【Heavy Meta】＜10ppm
【As】＜0.5ppm

【Pb】＜1ppm

【Hg】＜0.05ppm ,

【Cd】＜0.2ppm,

【Ni】＜0.5ppm
【Total Plate Count】＜1000cfu/g
【Yeast & Mold】＜100cfu/g

【Loss on Drying】＜2%
【E.Coli】Negative

【Pesticides】 Negative
【Salmonella】Negative

【Active material】Emodin

【Molecular Formula】C₁₅H₁₀O₅

【Molecular Weight】270.23

【Melting point】321~2°C

【Solubility】Insoluble in water  Dissolve in alkali and pyridine, slightly dissolve in ethanol, benzene, chloroform, ether and petroleum ether.

【Packing】25kg cardboard barrel

【Particle size】80 mesh