L-TRYPTOPHAN (FOR BIOCHEMISTRY)

L-TRYPTOPHAN (FOR BIOCHEMISTRY)
Article No. Grade Purity Cas no. Molecular Formula Molecular Weight H.S. Code Shelf Life
T0211800005 For Biochemistry 99% 73-22-3 C11H12N2O2 204.23 2933.9900
60 Months

Physical Properties

Physical state at 20 °C

Solid

Colour

White crystalline

Odour

Odorless

pH value

5.5 - 7.0

Melting Point/ Freezing point [°C]

280 - 285 °C

Solubility in water [% weight]

Partially soluble in water

Specifications

Appearance:

 White crystalline powder

Heavy metal (as Pb):

 Max 0.001%

Ammonium (NH4):

 Max 0.01%

Assay (by HClO4 titration):

 Min 99%

Foreign amino acids:

 Max 0.3%

Other ninhydrin positive substances (as glycine):

 Max 0.1%
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Globally Harmonized System of classification and Labelling of Chemicals (GHS)

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