L-Tyrosine:
Characteristics: White, styli form crystals with bitterness, soluble in dilute acids or base
Quality standards: USP24, AJI97 and etc.
|
Item |
Specifications |
|
|
USP24 |
AJI97 |
|
|
Appearance |
White crystals or crystalline powder; tasteless |
|
|
Assay,% |
98.5~101.5 |
99.0~101.0 |
|
Specific optical rotation |
-9.8°~ -11.2° |
-11.3°~ -12.1° |
|
Transmittance, % |
- - - |
≥98.0 |
|
Heavy Metals (as Pb), % |
≤0.001 |
≤0.001 |
|
pH value |
- - - |
5.0~6.5 |
|
Loss on drying, % |
≤0.3 |
≤0.2 |
|
Residue on ignition, % |
≤0.4 |
≤0.1 |
|
Chloride (as Cl),% |
≤0.04 |
≤0.02 |
|
Ammonium (as NH4),% |
- - - |
≤0.02 |
|
Sulfate (as SO4), % |
≤0.04 |
≤0.02 |
|
Iron, % |
≤0.003 |
≤0.001 |
|
Arsenic (as As), % |
≤0.0001 |
≤0.0001 |
|
Other amino acids |
- - - |
Not detd. |
|
Organic volatile impurities
|
Meets the requirement |
- - - |
Company Name: Qingdao Dacon Trading Co., Ltd
Registered Address: No.807,Attached Building,No.3 Workshop, 14th Zone, Free Trade Zone, Qingdao, Shandong, China (Mainland)
Legal Representative/CEO: Ms. Shuming Kang
Registration No.: 370220228001552
