|
L-Lysine
Hydrochloride
|
 |
|
C6H14N2O2·HCl
182.7 |
7182.7 |
| DEFINITION |
|
Lysine hydrochloride
contains not less than 98.5 per cent and not more than the
equivalent of 101.0 per cent of ((S)-2,6-Diaminohexanoic acid
hydrochloride, calculated with reference
to the dried substance.
|
|
CHARACTERS
|
|
A white, crystalline powder
or colourless crystals, freely soluble in water, slightly
soluble in alcohol, practically insoluble in ether.
|
| IDENTIFICATION |
| Infrared absorption
spectrophotometry |
| TESTS |
| Appearance
of solution |
Clear and
meets the requirements |
|
Specific
optical rotation |
+21.0º to +22.5º |
| Ninhydrin-positive
substances |
Meets the requirements |
| Sulphates |
Limit: 300 ppm |
| Ammonium |
Limit:200 ppm |
| Iron |
Limit:30 ppm |
| Heavy
metals |
Limit:10 ppm |
| Loss
on drying |
Not more than 0.5 per
cent |
| Sulphated
ash |
Not more than 0.1 per
cent |
|
ASSAY |
98.5 per cent to 101.0 per
cent |
| STORAGE |
| Store in a well-closed
container, protected from light. |
