 |
L-Threonine
| Chemical Name： |
L-2-Amino-3-hydroxybutyric acid; |
| Structure Formula： |
 |
| Molecular Formula： |
C4H9NO3 |
| Molecular Weight： |
119.12 |
| Cas No： |
[72-19-5] |
| Characteristics： |
White crystalline powder |
| Quality Standards： |
USP24, FCCIV, AJI97 and etc. |
| |
| Item |
Specification |
| USP24 |
FCCIV |
AJI97 |
| Appearance |
White crystals or crystalline powder |
| Assay, %(on dried basis) |
98.5~101.5 |
98.5~101.5 |
98.5~101.0 |
| Specific optical rotation |
-26.7°~-29.1° |
-26.5°~-29.0° |
-27.6°~-29.0° |
| Transmittance |
- - - |
- - - |
≥98.0 |
| PH Value |
5.0~6.5 |
- - - |
5.2~6.2 |
| Loss on drying,% |
≤0.2 |
≤0.3 |
≤0.2 |
| Heavy metals (as Pb),% |
≤0.0015 |
≤0.002 |
≤0.001 |
| Residue on ignition,% |
≤0.4 |
≤0.1 |
≤0.1 |
| Chloride (as Cl),% |
≤0.05 |
- - - |
≤0.02 |
| Sulfate (as SO4),% |
≤0.03 |
- - - |
≤0.02 |
| Ammonium (as NH4),% |
- - - |
- - - |
≤0.02 |
| Arsenic (as As),% |
≤0.00015 |
≤0.00015 |
≤0.0001 |
| Iron,% |
≤0.003 |
- - - |
≤0.001 |
| Other amino acids |
- - - |
- - - |
Not detd. |
| Organic volatile impurities |
Meets the requirement |
- - - |
Meets the requirement |
| |
| The Characteristics and Uses： |
|
| Package and Transport： |
With round paperboard drum 25kgs per drum. |
| Storage： |
Kept in a light-proof, well-closed, dry and cool place. |
|
