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Products
L-Pyroglutamic Acid
Test Items |
Standard |
Description |
White crystals or crystalline powder |
Specific Rotation [α]D20 |
-10.5°to -12.3° |
Chloride(Cl) |
≤0.020% |
Heavy metals (Pb) |
≤10PPM |
Iron(Fe) |
≤10PPM |
Arsenic (As2O3) |
≤1PPM |
Other amino acids |
conforms |
Loss on drying |
≤0.5% |
Residue on ignition |
≤0.2% |
Melting point |
160.1 ~ 161.2℃ |
Assay |
98.5% ~ 101.0% |
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