Product name

L-Histidine Monohydrochloride

Item

Specification

Appearance

White crystals or crystalline powder

Specific Rotation [a]D20°

+8.9°to +9.5°

State of Solution

98.0% Min

Chloride (Cl)

16.66% to 17.08%

Ammonium (NH4)

0.02% 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

0.20% Max

Residue on Ignition

0.10% Max

pH

3.5 to 4.5

Assay

99.0% to 101.0%