L-Glutamic Acid

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L-Glutamic Acid

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Molecular Structure8a3ee2f1c6706b45930c5dfa32623737.jpg
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-positiveAny 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
Ammoniumnot  more  than  0.02%
Loss  on  dryingnot more than  0.50%
Assay

98.5%  to  100.5%

PH

3.0  to  3.5