Synonyms:
S-methionine
L-Methionine
L-Methionyl b-naphthylamide
N-L-Methionyl-2-naphthylamine
N-L-Methionyl-2-naphthylamin
Methionine b-naphthylamide
molecular formula: C5H11NO2S
Molecular weight: 149.21100
Physical Properties:
Density: 1.2±0.1 g/cm3
Boiling Point: 306.9±37.0 °C at 760 mmHg
Melting Point: 284 °C (dec.)(lit.)
Molecular Formula: C5H11NO2S
Molecular Weight: 149.211
Flash Point: 139.4±26.5 °C
Exact Mass: 149.051056
PSA: 88.62000
LogP: 0.37
Vapour Pressure: 0.0±1.4 mmHg at 25°C
Index of Refraction: 1.531
Water Solubility: Soluble
Specification:
Appearance: White crystalline powder
Identification: IR
Assay : 99.0~101.0%
Specific rotation: +22.4°~+24.8°
pH : 5.6~6.1
Residue on ignition: ≤0.40%
Chloride (Cl): ≤0.05%
Loss on drying: ≤0.30%
Sulfate(SO4): ≤0.03%
Iron(Fe) : ≤30ppm
Heavy metals (Pb) : ≤15ppm
Organic volatile impurities: Meets the requirements
Application:
Used as nutritional supplements and feed additives.
Package and Storage:
25kg/drum, store at room temperature away from light.
Item | Specifications | Results |
Appearance | White crystalline powder | White crystalline powder |
Assay | 99.0~101.0% | 99.9% |
Specific rotation | +22.4°~+24.8° | +23.7° |
pH | 5.6~6.1 | 5.9 |
Residue on ignition | ≤0.40% | 0.13% |
Chloride (CL) | ≤0.05% | 0.018% |
Loss on drying | ≤0.30% | 0.25% |
Sulfate(SO4) | ≤0.03% | 0.015% |
Iron,(Fe) | ≤30ppm | 7ppm |
Heavy metals ,(Pb) | ≤15ppm | 6ppm |
Organic volatile impurities | Meets the requirements | Conform |
Identification | Infrared absorption | Conform |
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