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Product Name |
L-Tryptophan |
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Formula |
C11H12N2O2 |
Molecular Weight |
204.23 |
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CAS NO. |
73-22-3 |
Quantity |
500KG |
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Items |
Specification |
Results |
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Appearance |
White crystal or crystal powder |
Conforms |
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Assay |
99% | 99.36% |
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CONCLUSION |
The result conform with standard |
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Melting point 289-290 ° C (Dec.) (lit.)
Specific rotation - 31.1 º (C = 1, H20)
Boiling point 342.72 ° C (rough estimate)
Density: 1.34
Refractive index - 32 ° (C = 1, H2O)
Storage condition: 2-8 ° C
Solubility 20% NH3: 0.1g/mlat20 ° C, clear, colorless
Form: Powder
Acidity coefficient (PKA) 2.46 (AT25 ℃)
Color: whitetoyellow white
PH 5.5-7.0 (10g / L, H2O, 20 ℃)
Optical activity[ α] 20/D31.5±1°,c=1%inH2O
Water solubility 11.4g/l (25 º C)
Synthesis of organic intermediates
