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Rhubarb Extract
Latin Name---Rheum palmatum L
CAS No.---008016-55-5
Appearance---yellow fine powder
Test Method---HPLC
Part of the Plant Used---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---<1ppm
Pb---<1ppm
Hg---<1ppm
Cd---<1ppm
Ni---<1ppm
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 meshes
Shelf Life---24 months