| Synonyms | Ammonium glutamate |
| Definition | |
| Chemical name | Monoammonium L-glutamate monohydrate |
| Einecs | 231-447-1 |
| Chemical formula | C5H12N2O4 · H2O |
| Molecular weight | 182,18 |
| Assay | Content not less than 99,0 % and not more 101,0 % on the anhydrous basis |
| Description | White, practically odourless crystals or crystalline powder |
| Identification | |
A.Positive test for ammonium | |
B.Positive test for glutamic acid by thin-layer chromatog-raphy | |
C.Specific rotation [α]D 20 | Between 25,4o and 26,4o |
| (10 % solution (anhydrous basis) in 2N HCl, 200 mm tube) |
D.pH of a 5 % solution | Between 6,0 and 7,0 |
| Purity | |
| Loss on drying | Not more than 0,5 % (50 oC, 4h) |
| Sulphated ash | Not more than 0,1 % |
| Pyrrolidone carboxylic acid | Not more than 0,2 % |
| Lead | Not more than 2 mg/kg |
