Basic information
CAS NO
149-87-1
EINECS
205-748-3
Molecular Formula
C5H7NO3
Molecular Weight
129.114
English Name
DL-Pyroglutamic acid
Synonyms
DL-2-Pyrrolidone-5-Carboxylic Acid, Dl-5-Oxoproline, H-Dl-Pyr-Oh, Dl-Proline, 5-Oxo-, (+/-)-2-Pyrrolidone-5-Carboxylic Acid, 2-Pyrrolidone-5-Carboxylic Acid, (+/-)-2-Pyrrolidinone-5-Carboxylic Acid, 5-Oxo-Dl-Proline, Dl-A-Pyroglutamic Acid, Dl-Glutamic Acid Lactam, 5-oxo-L-proline
Physical and Chemical Properties
Density
1.38g/cm3
Refractive index
1.511
Melting point
180-185℃
Boiling point
453.1°C at 760 mmHg
Flash point
227.8°C
Water Solubility
5.67 g/100 mL (20℃)
Vapour Pressure
1.79E-09mmHg at 25°C
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