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L-Methionine |
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Chemical Name: 2-amino-4-(methylthio)-butyric acid
Molecular Formula: C 5 H 11 NO 2 S 
Molecular Weight: 149.1
Cas NO: [ 63-68-3 ]
Characteristics: White crystals or crystalline powder
Quality Standards: USP24, AJI92, FCC4 etc. |
Specification Sheet
(AJI92) |
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Expiry Period : 2 years
Packaging: 25kg / drum |
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Items |
Specifications |
Appearance |
White crystalline powder |
Identification |
Meets the requirements |
Specific rotation |
+23.0 ~ +24.0° |
Assay ,% |
99.0 ~ 101.0 |
pH value |
5.6 ~ 6.1 |
Loss on drying,% |
≤0.20 |
Heavy metals(as Pb) , ppm |
≤10 |
Transmittance,% |
≥98.0 |
Residue on ignition,% |
≤0.10 |
Chloride ,% |
≤0.020 |
Sulphate (SO4-2),% |
≤0.020 |
Arsenic(As2o3), ppm |
≤1 |
Iron(Fe), ppm |
≤10 |
Other amino acid |
No detectable |
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