- Details for D-Pyroglutamic acid
-
D-Pyroglutamic acid 4042-36-8
| Category : |
Food and Feed additives/Food additives |
 |
| CAS NO : |
4042-36-8 |
| EC NO : |
223-735-0 |
| MF : |
C5H7NO3 |
| MW : |
129.114 |
| Specification : |
Standard :AJI/USP |
| Product description : |
Appearance
White crystals with lumps
Specific rotation[α]D/20
(C=2 in H2O)
+10.8°to +12.3°
Melting Point (ºC)
160 to 163 ºC
Chloride(C1)
Not more than 0.02%
Iron(Fe)
Not more than 10ppm
Heavy metals(Pb)
Not more than 10ppm
Arsenic(As2O3)
Not more than 1ppm
Loss on drying
Not more than 0.20%
Residue on ignition
Not more than 0.10%
Assay
98.0%¡«101.0%
|
| Synonyms : |
D-5-Pyrrolidone-2-carboxylic acid;D-Pyroglutamic acid;(R)-(+)-2-Pyrrolidinone-5-carboxylic acid;H-D-Pyr-OH;
;2-oxopyrrolidine-1-carboxylic acid; |
| Molecular Structure : |
 |