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54-12-6

Name DL-Tryptophan
CAS 54-12-6
EINECS(EC#) 200-194-9
Molecular Formula C11H12N2O2
MDL Number MFCD04118170
Molecular Weight 204.23
MOL File 54-12-6.mol
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Chemical Properties

Appearance White crystals. Slightly soluble in water; stable in alkaline solution; decomposed by strong acids.
Melting point  289-290 °C (dec.)(lit.)
alpha  [α]D20 -1～1°(c=1, dil. HCl)
Boiling point  342.72°C (rough estimate)
density  1.1754 (rough estimate)
refractive index  1.5200 (estimate)
storage temp.  Store at RT.
solubility  methanol: water (7:3): soluble
form  Powder
pka 2.30±0.10(Predicted)
color  White to light beige or light yellow
Odor Odorless
Stability: Stable. Incompatible with strong oxidizing agents, strong acids.
Water Solubility  10 g/L (20 ºC)
BRN  86196
InChIKey QIVBCDIJIAJPQS-UHFFFAOYSA-N
LogP 1.040 (est)
CAS DataBase Reference 54-12-6(CAS DataBase Reference)
NIST Chemistry Reference Tryptophane(54-12-6)
EPA Substance Registry System 54-12-6(EPA Substance)
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Safety Data

Hazard Codes  Xi
Risk Statements 
R22:Harmful if swallowed.
R36/37/38:Irritating to eyes, respiratory system and skin .
R37/38:Irritating to respiratory system and skin .
R41:Risk of serious damage to eyes.
Safety Statements 
S24/25:Avoid contact with skin and eyes .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S36:Wear suitable protective clothing .
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
WGK Germany  1
RTECS  YN6129200
F  8
TSCA  Yes
HS Code  29339990
Safety Profile
Experimental reproductive effects. Questionable carcinogen with experimental carcinogenic data. When heated to decomposition it emits toxic fumes of NOx.

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