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L-Tyrosine |
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Chemical Name: (s)-2-Amino-3-(4-hydroxyphenyl) propionic acid
Molecular Formula: C9H11NO3 
Molecular Weight: 181.19
Cas NO: [ 60-18-4 ]
Characteristics: White crystals or crystalline powder; tasteless.
Quality Standards: USP24, AJI92 etc. |
Specification Sheet
(AJI92) |
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Expiry Period : 2 years
Packaging: 25kg / drum |
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Items |
Specifications |
Description |
White crystals or crystalline powder |
Identification |
Infrared absorption spectrum |
Assay, % |
99.0 ~ 100.5 |
Specific rotation,° |
-11.3 ~ -12.1 |
State of solution, % |
≥95.0 |
Chloride (Cl) , % |
≤0.020 |
Ammonium (NH4) , % |
≤0.02 |
Sulfate (SO4) , % |
≤0.020 |
Iron (Fe), ppm |
≤10 |
Heavy metals (Pb) , ppm |
≤10 |
Arsenic (As2O3) , ppm |
≤1 |
Other amino acids |
Conforms |
Loss on drying, % |
≤0.20 |
Residue on ignition (sulfated) , % |
≤0.10 |
PH |
5.0 ~ 6.5 |
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