L-Glutamic Acid case no 56-86-0

Product Name:L-Glutamic Acid CAS NO.: 56-86-0 Quality Standard: FCC IV ITEM LIMIT Charactcrs A white,crystalline powder or Colorless crystals Identification A. Specific optical rotation B. IR C. TLC D.Color reaction Specific rotation [a]D20° +31.5° to +32.5° Appearance of solution clear and colorless Ninhydrin-positive Any impurity Substancesnot more than 0.5% Chloride(cl) not more than 0.020% Sulfate(SO4)not more than 0.030% Iron(Fe) not more than 10ppm Heavy metals(Pb)not more than 10ppm Ammonium not more than 0.02% Loss on drying not more than 0.50% Residue on ignitionnot more than 0.10% (sulfated) Assay 98.5% to 100.5% PH 3.0 to 3.5 Storage: Preserve in tight containers at controlled room temperature. Recommended limit: 2 years