L-Tyrosine
Chemical Name：3-(4-Hydroxyphenyl)-L-alanine
Molecular Formula：C9H11NO3
Molecular Weight：181.19
Cas No：[60-18-4]
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 | - - - |
Package and Transport：Packed with a polyethylene bag for the inner layer and a Kraft paper board barrel for the outer layer, net weight 25kg/drum. Packaging may be arranged according to the requirement of the client.
Handle with care in order to avoid damaging the package. Protect them from sunshine and rain. Do not transport them together with poisonous or harmful goods. This product is a non-dangerous product and can be transported as a general chemical product.
Storage：Store in cool, shaded, dry and clean places. Do not store it together with poisonous or harmful goods in order to avoid pollution. The limit of retained quality for two years.
Hebei Huaheng Biological Technology Co., Ltd
TEL：0318-8628255
FAX：0318-8628286
Email：info@jizhouhuaheng.com
Address：No.777 Xinghua South Street,Jizhou City,Hebei Pro.,China
