Glutamic acid (abbreviated as Glu or E) is one of the 20 proteinogenic amino acids, and its codons are GAA and GAG. It is a non-essential amino acid. The carboxylate anions and salts of glutamic acid are known as glutamates
L-Glutamic Acid：
CAS NO: 56-86-0
Appearance: White crystals or crystalline powder, slightly bitter taste
Purity: 98.5% min
Application:L-glutamic acid is be used as nutrition supplement, salt-substitution and fresh-taste product. And it is be used to synthesis some chiral compound and medicine intermediate in fine chemical industry
Storage: Cool, dry, dark in closed containers
Specification:
|
Standard |
AJI92 |
USP24 |
EP5 |
FCC4 |
|
Assay |
99.0~100.5% |
98.5~100.5% |
98.5~100.5% |
98.5~101.5% |
|
pH |
3.0~3.5 |
3.0~3.5 |
|
5.5~7.0 |
|
Specific rotation[a]D20
[a]D25 |
+31.5~+32.5ºº |
+30.5~+32.5ºº |
+30.5~+32.5ºº |
+31.5~+32.5ºº |
|
Transmittance(T430) |
≥98.0% |
|
≥98.0% |
|
|
Chloride(Cl) |
≤0.020% |
≤0.05% |
≤0.020% |
|
|
Ammonium(NH4) |
≤0.020% |
|
≤0.020% |
|
|
Sulfate(SO4) |
≤0.020% |
≤0.03% |
≤0.020% |
|
|
Iron(Fe) |
≤10ppm |
≤30ppm |
≤10ppm |
|
|
Heavy metals(Pb) |
≤10ppm |
≤15ppm |
≤10ppm |
≤20ppm |
|
Arsenic |
≤1ppm(As2O3) |
|
|
≤3ppm(As) |
|
Lead(Pb) |
|
|
|
≤10ppm |
|
Other amino acids |
Conforms |
|
|
Conforms |
|
Loss on drying |
≤0.10% |
≤0.50% |
≤0.50% |
≤0.10% |
|
Residue on ignition |
≤0.10% |
≤0.10% |
≤0.10% |
≤0.30% |
|
Organic volatile impurities |
|
Conforms |
|
|