精氨酸.谷氨酸

AppearanceWhite crystalline powderConformsSpecific rotation[α]20/D

(C=8 6N HCl)+28.0 to ~30.0Degree 28.98°TransmittanceNot less than 98.0%98.3%Chloride (Cl)Not more than 0.020%0.018%Ammonium (NH4)Not more than 0.02%<0.02%Sulfate (SO4)Not more than 0.030%0.018%Iron (Fe)Not more than 10ppm<10ppmHeavy metal(Pb)Not more than 10ppm<10ppmArsenic(As2O3)Not more than 1ppm<1ppmOther Amino AcidsChromatographically

Not detectableConformsWaterNot more than 5.0%1.0%Residue on ignition(sulfated)Not more than 0.20%0.10%Assay98.5%~101.0%99.6%PH6.0 to 7.56.8