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. 519, Workshop On 5/F, 1 Hancheng Rd., Free Trade Zone, Qingdao, Shandong, China (Mainland)
Legal Representative/CEO: Ms. Shuming Kang
Registration No.: 91370220747213098M
