Plant source:The dry root of Astragalus membranaceus (Fisch. )Bge.(Main origin of Gansu) or Astragalus membranaceus (Fisch. ) Bge. var. mongholicus ( Bge. ) Hsiao(Main origin of Inner Mongolia)

Appearance: Brown yellow powder (5%, 10%), Light yellow powder(50%,90%),White powder (98%)

Molecular Formula: C30H50O5

Molecular Weight: 490.72

CAS No.:78574-94-4,84605-18-5

Assay Test method: HPLC-RID or HPLC-ELSD

Other Inspection item:

Loss on drying	≤ 1.00-5.00%
Ash	≤ 1.00-5.00%
Arsenic(MDL0.05)	≤ 2ppm
Lead(MDL0.02)	≤ 2ppm
Cadmium(MDL0.02)	≤ 1ppm
Mercury(MDL0.005)	≤ 0.1ppm
Total BHC	≤ 0.9ppm
Total DDT	≤ 1.0ppm
Total PCNB	≤ 1.0ppm
Total plate count	≤ 1000cfu/g
Mould&Yeast	≤ 100cfu/g
E.Coli	Negative
Salmonella	Negative