Aspartame FCCIV: Aspartame purity (dry basis): 98.0% 102.0% Appearance: White powder or granules Transmittance: 95.0% min Specific Rotation [a]d20: +14.5 +16.5degrees Loss on drying: 4.5% max Residue on ignition: 0.20% max PH value: 4.5 6.0 Arsenic: 3ppm max Heavy metals (as Pb): 0.001% max Volatile organic impurities: Conform 5-benzyl-3, 6-dioxo-2-piperazine acetic acid 1.5% max Other related substance: 2.0% max Aspartame is a new-style intense sweetener of amino acid. It is a dipeptide compound made from L-aspartic acid and L-phenylalanine. It has no after taste such as bitter, chemical and metal taste. Aspartame can enhance the flavor of fruit and reduce the bitterness of coffee. Furthermore, aspartame can decrease calories effectively, and it will not cause decayed tooth. Aspartame has the same metabolic function as protein.