Details:
Molecular Structure：
Synonym：2-(3,4-dihydroxyphenyl)-2,3,4-trihydro-3,5,7-trihydroxychromene
CAS NO.：490-46-0
Appearance：White powder
Specification(HPLC)：95%($470/500g), 98%($640/500g)
|
Parameter
|
Unit
|
Specification
|
|
Appearance
|
-
|
White powder
|
|
Taste
|
-
|
Characteristic
|
|
EC
|
%
|
≥95, ≥98
|
|
Caffeine
|
%
|
≤0.1
|
|
Moisture
|
%
|
≤5.0
|
|
Ash
|
%
|
≤0.5
|
|
Particle Size
|
-
|
100% pass 60 mesh
|
|
Tapped Density
|
g/cm3
|
0.50-0.60
|
|
pH
|
-
|
4-6
|
|
Heavy Metal (Pb)
|
ppm
|
≤5.0
|
|
Heavy Metal (As)
|
ppm
|
≤2.0
|
|
Heavy Metal (Hg)
|
ppm
|
≤0.5
|
|
Total Plate Count
|
colony/g
|
≤1000
|
|
Yeast & Mold
|
|
colony/g
|
≤100
|
|
Salmonella
|
colony/g
|
Negative
|
|
E.coli
|
colony/g
|
Negative
|
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