|
L-THREOLINE
CAS No.:72-19-5
Description: White crystals or crystalline powder
| 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 |
-26.7º~ -29.1º
|
-26.5º~ -29.0º
|
-27.6º~ -29.0º
|
| 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
|
Uses: MEDICINE AND FOOD INDUSRIES
Packing: 25kg /fiber drum
|
|
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