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L-Histidine HCL CAS:645-35-2<< BACK
Specific Rotation [a]D20o 8.9 to 9.5 degree
State of Solution 98.0% Min
Chloride (Cl) 16.66% to 17.80%
Ammonium (NH4) 0.02% Max
Sulfate (SO4) 0.02% Max
Iron (Fe) 10ppm Max
Heavy Metals (Pb) 10ppm Max
Arsenic (As2O3) 1ppm Max
Other Amino Acids Chromatographically Not detectable
Loss on Drying 0.20% Max
Residue in Ignition 0.10% Max
Assay 99.0% to 101.0%
PH 3.5 to 4.5

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