L-Methionine

Post Date:
Jul 16,2013
Expiry Date:
Jul 16,2014
Detailed Description:
Cas No. :63-68-3 Details:
Item Specifications
AJI92 USP24 FCC IV
Description White crystals or crystalline powder Colorless or white lustrous plates, or a white crystalline powder, it has slight, characteristic odor.
Identification Infrared absorption spectrum
Specific rotation +23.0 - +24.0 +22.4- +24.7 +21.0- +25.0
State of solution
(Transmittance) ≥ 98.0% --- Soluble in water, alkali solutions and in dilute mineral acids
Chloride(CL) ≤ 0.020% ≤ 0.05% ---
Sulfate(SO4) ≤ 0.020% ≤ 0.03% ---
Ammonium(NH4) ≤ 0.02% ---
Heavy metals(Pb) ≤ 10PPm ≤ 0.0015% ≤ 10ppm
Lead --- --- ≤ 10mg/kg
Iron(Fe) ≤ 10PPm ≤ 0.003% ---
Arsenic(As2O3) ≤ 1PPm --- ---
Other amino acids Conforms --- ---
Loss on drying ≤ 0.20% ≤ 0.30% ≤ 0.5%
Residue on ignition (sulfated) ≤ 0.10% ≤ 0.40% ≤ 0.1%
Assay 99.0--- 101.0% 98.5-101.5% 98.5-101.5%
PH 5.6-6.1 5.6-6.1 ---
O.V.I --- Meet the requirements ---
CAS Registry Number:
63-68-3
Synonyms:
;(S)-2-Amino-4-(methylthio)butyric acid;H-Met-OH;L-Methionine, USP Grade;(L)-S-methylhomocysteine;2-Methyl Eneghlutaronitrile;Methionine;
Molecular Formula:
C₅H₁₁NO₂S
Molecular Weight:
149.21
Molecular Structure:
Safety Description:
S24/25:;

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