Product Name: L- Theanine
CAS#: 3081-61-6
|
Item |
Standard |
|
Appearance |
White crystalline powder |
|
Specific rotation(a)D20 (C=1 , H2O ) |
+7.7o to +8.5o |
|
Solubility (1.0g/20ml H2O) |
Clear Colorless |
|
Melting Point (oC) |
211-216 oC |
|
Chloride(C1) |
Not more than 0.02% |
|
Iron(Fe) |
Not more than 10ppm |
|
Heavy metals( Pb ) |
Not more than 10ppm |
|
Arsenic(As2O3 ) |
Not more than 4ppm |
|
Loss on drying( 100 ¡æ 3h) |
Not more than 0.50% |
|
Residue on ignition |
Not more than 0.2% |
|
Assay |
98.0-102.0% |
|
PH |
5.0~6.0 |
