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Appearance:White to yellow-white powder
Throughput:100|Kilogram|Month
pd_productuse:intermediate
Delivery Time:large stock
Purity:99% purity
L-Tryptophan Chemical Properties
Melting point 289-290 °C (dec.)(lit.)
alpha -31.1 º (c=1, H20)
Boiling point 342.72°C (rough estimate)
density 1.34
refractive index -32 ° (C=1, H2O)
storage temp. Store at RT.
solubility 20% NH3: 0.1 g/mL at 20 °C, clear, colorless
pka 2.46(at 25℃)
form powder
color White to yellow-white
PH 5.5-7.0 (10g/l, H2O, 20℃)
optical activity [α]20/D 31.5±1°, c = 1% in H2O
Water Solubility 11.4 g/L (25 ºC)
Merck 14,9797
BRN 86197
Stability: Stable. Incompatible with strong acids, strong oxidizing agents.
InChIKey QIVBCDIJIAJPQS-VIFPVBQESA-N
CAS DataBase Reference 73-22-3(CAS DataBase Reference)
NIST Chemistry Reference L-Tryptophan(73-22-3)
EPA Substance Registry System L-Tryptophan (73-22-3)
Safety Information
Hazard Codes Xi
Risk Statements 33-40-62-41-37/38-36/37/38-22
Safety Statements 24/25-36/37/39-36-26
WGK Germany 2
RTECS YN6130000
F 8
TSCA Yes
HS Code 29339990
Hazardous Substances Data 73-22-3(Hazardous Substances Data)
Toxicity LD508mmol / kg (rat, intraperitoneal injection). It is safe when used in food (FDA, §172.320, 2000).
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