精氨酸天门冬氨酸

Specific rotation[α]20/D

(C=8 in 6N HCl)+25.5°to +27.5°25.9° Chloride (Cl)Not more than 0.05%<0.018% Sulfate (SO4)Not more than 0.03%<0.015% Iron(Fe)Not more than 30ppm20ppmHeavy metal(Pb)Not more than 20ppm6ppm Ammonium(NH4)Not more than 0.02%<0.02% Loss on dryingNot more than 3.0%0.37%Residue on ignition(sulfated)Not more than 0.2%0.08% Assay98.5% to 101.0%99.0%PH5.5 to 7.06.5