L-Arginine

Item

Specification

Appearance

White crystals or crystalline powder

Specific rotation[α]D25

﹢26.3°~﹢27.7°

Indentification

Concordant with the reference spectrum

Loss on drying

≤1.0%

Residue on ignition

≤0.20%

Arsenic (As)

≤1.5 ppm

Heavy metals(Pb)

≤15 ppm

Lead

≤5 ppm

Assay

98.5 ~ 101.5%

PH

10.5 ~ 12