Product Name: L-Theanine
CAS#: 3081-61-6
Molecular Formula: C7H14N2O3
Molecular Weight: 174.2
Specification:
Item |
Standard |
Appearance |
White crystalline powder |
Specific rotation(a)D20 (C=1 , H2O ) |
+7.7° to +8.5° |
Solubility (1.0g/20ml H2O) |
Clear Colorless |
Melting Point (℃) |
211-216 ℃ |
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 ℃ 3h) |
Not more than 0.50% |
Residue on ignition |
Not more than 0.2% |
Assay |
98.0-102.0% |
PH |
5.0~6.0 |