Details:
Molecular Structure：
Synonym：(-)-epigallocatechol; 3,3’,4’,5,5’,7-flavanhexol; Greenteacatechins,
5,7-triol,3,4-dihydro-2-(3,4,5-trihydroxyphenyl)-2h-1-benzopyran-(2r-cis)
CAS NO.：970-74-1
Appearance：White powder
Specification(HPLC)：95%($459/kg), 98%($544/kg)
|
Parameter
|
Unit
|
Specification
|
|
Appearance
|
-
|
White powder
|
|
Taste
|
-
|
Characteristic
|
|
EGC
|
%
|
≥95, ≥98
|
|
Caffeine
|
%
|
≤0.1
|
|
Moisture
|
%
|
≤5.0
|
|
Ash
|
%
|
≤0.5
|
|
Particle Size
|
-
|
100% pass 80 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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