| |
 |
 |
|
| L-Leucine |
|
| Chemical Name： |
(S)-2-Amino-4-methylpentanoic
acid |
|
Structure Formula：
|
 |
|
Molecular Formula：
|
C6H13NO2 |
|
Molecular Weight：
|
131.17
|
|
Cas No：
|
[61-90-5] |
|
Characteristics：
|
White crystals
or crystalline powder. Odorless, slightly bitter taste. Freely soluble
in formic acid, sparingly soluble in water, very slightly soluble
in ethanol or in ether, dissolves in dilute hydrochloric acid. |
|
Quality
Standards：
|
USP24,
AJI92 and etc. |
|
Item
|
AJI92
|
USP24
|
| Assay,
% |
98.5~100.5 |
98.5~100.5 |
| pH value
|
5.5~6.5 |
5.5~7.0 |
| Specific
rotation[a]D20º |
+14.9º~+16.0º |
+14.9º~+17.3º |
| Chloride
(CI)
, % |
≤0.02 |
≤0.05
|
| Ammonium
(NH4), %
|
≤0.02 |
-
- -
|
| Sulfate
(SO4),
% |
≤0.02 |
≤0.03 |
| Iron (Fe),
% |
≤0.001 |
≤0.003 |
| Heavy
metals,
% |
≤0.001 |
≤0.0015 |
| Arsenic,
% |
≤0.0001 |
-
- -
|
| Other
amino acids, |
Not
detd.
|
-
- -
|
| Loss
on drying, % |
≤0.2 |
≤0.2
|
| Residue
on ignition,
% |
≤0.1 |
≤0.4
|
| Organic
volatile impurities,
% |
-
- -
|
Conforms
|
|
|
The
Characteristics and Uses：
|
One of essential
amino acids in human body, material of various amino acids drip-feed;
curing burn, trauma, taint and brawn- restoration before&after
operation; taking part in NH4 metabolic activity and protecting
liver. |
|
Package
and Transport：
|
Fibre drum double
polyethylene bags inside (25kgs) |
|
Storage：
|
Cool, dry, dark
in closed containers, recommended limit 2 years. |
|
|
