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Position: Home -> Products -> L Group Amino Acids L-Tryptophan CAS:73-22-3 << BACK Item Limit Specific Rotation [a]D20o -29.4¡ãto-32.8¡ã PH 5.5 to 7.0 State of Solution 95.0% Min Chloride (Cl) 0.050% Max Ammonium (NH4) 0.020% Max Sulfate (SO4) 0.030% Max Iron (Fe) 30ppm Max Heavy Metals (Pb) 15ppm Max Loss on Drying 0.3% Max Residue in Ignition 0.1% Max Assay 98.5% -101.5%

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