L-Pyroglutamic acid CAS NO.98-79-3

L-Pyroglutamic acid Chemical Properties
Melting point     160-163 °C(lit.)
alpha     -27.5 º (c=10, 1 N NaOH)
Boiling point     239.15°C (rough estimate)
density     1.3816 (rough estimate)
refractive index     -10 ° (C=5, H2O)
storage temp.     2-8°C
solubility     H2O: 1 M at 20 °C, clear, colorless
form     Crystalline Powder
pka    3.32(at 25℃)
color     White to off-white
PH    1.7 (50g/l, H2O, 20℃)
optical activity    [α]20/D 10.5±1°, c = 5% in H2O
Water Solubility     10-15 g/100 mL (20 ºC)
Merck     14,8001
BRN     82132
Stability:    Stable. Incompatible with bases, acids, strong oxidizing agents.
CAS DataBase Reference    98-79-3(CAS DataBase Reference)
NIST Chemistry Reference    Pidolic acid(98-79-3)
EPA Substance Registry System    5-Oxo-L-proline (98-79-3)      

L-Pyroglutamic acid Basic information
Characteristics and Application Pyroglutamic acid Preparation Glutamic acid Chemical Properties Uses Production method
Product Name:    L-Pyroglutamic acid
Synonyms:    (5s)-2-oxopyrrolidine-5-carboxylicacid;(s)-5-oxo-2-pyrrolidinecarboxylicacid;(s)-pyroglutamicacid;2-benzothiazolesulfenicacidmorpholide;2-l-pyrrolidone-5-carboxylicacid;2-oxopyrrolidine-5-carboxylicacid;2-pyrrolidone-5-carboxylate;glutimicacid
CAS:    98-79-3
MF:    C5H7NO3
MW:    129.11
EINECS:    202-700-3
Mol File:    98-79-3.mol

Safety Information
Hazard Codes     Xi
Risk Statements     36/37/38
Safety Statements     26-36-37/39
WGK Germany     3
RTECS     TW3710000
F     21
TSCA     Yes
HazardClass     IRRITANT
HS Code     29337900