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Position: Home -> Products -> DL Group Amino Acids
DL-Tryptophan CAS:54-12-6 << BACK
AppearanceWhite / yellowish crystal or crystalline powder
Identification Conforms
PH 5.4 to 6.4
State of Solution 95.0%MIN
Chloride (Cl) 0.020% MAX
Ammonium (NH4) 0.020% MAX
Sulfate (SO4) 0.020% MAX
Iron (Fe) 10ppm MAX
Heavy Metals (Pb) 10ppm MAX
Arsenic (As2O3) 1ppm MAX
Other Amino Acids Conforms
Loss on Drying 0.2%MAX
Residue in Ignition 0.1% MAX
Assay 99% MIN

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