L-Glutamic Acid

　　Molecular formula：C5H9NO4 

　　molecular weight：147.13076 

　　CAS RN：56-86-0 

　　melting point：205℃ 

Description: White crystals or crystalline powder 

Assay: 99.0% to 100.5% 

Specific rotation (a) 20/D (C=10 in 2N HCL): +31.5 to +32.5° 

State of solution (Transmittance): Clear and colorless not less than 98.0% 

Chloride (Cl): NMT 0.020% 

Ammonium (NH4): NMT 0.02% 

Sulfate (SO4): NMT 0.020% 

Iron (Fe): NMT 10 ppm 

Heavy metals (as Pb): NMT 10 ppm 

Arsenic (As2O3): NMT 1 ppm 

Other Amino Acids: Chromatographically not detectable 

Loss on drying: NMT 0.10% 

Residue on ignition: NMT 0.10% 

PH: 3.0 to 3.5