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Product Name |
L-Pyroglutamic acid |
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Formula |
C5H7NO3 |
Molecular Weight |
129.11 |
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CAS NO. |
98-79-3 |
Quantity |
500KG |
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Items |
Specification |
Results |
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Appearance |
White to off-white Crystalline Powder |
Conforms |
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Assay |
99% | 99.54% |
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CONCLUSION |
The result conform with standard |
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Melting point 160-163 ° C (lit.)
Boiling point 239.15 ° C (rough estimate)
Specific rotation - 27.5 º (c=10,1NNaOH)
Density 1.3816 (rough estimate)
Vapor pressure 0.002Paat25 ℃
Refractive index - 10 ° (C=5, H2O)
Storage conditions 2-8 ° C
Solubility H2O: 1Mat20 ° C, clear, colorless
Form CrystalinePowder
Acidity coefficient (pKa) 3.32 (at25 ℃)
Color Whitetoff white
PH value 1.7 (50g/l, H2O, 20 ℃)
Opticalactivity[ α] 20/D10.5±1°,c=5%inH2O
Water solubility 10-15g/100mL (20 º C)
Synthesis of organic intermediates.
