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1 Kilogram |
Negotiable |
63-68-3 L-Methionine L-Methionine factory
L-Methionine Chemical Properties |
Melting point | 284 °C (dec.)(lit.) |
alpha | 23.25 º (c=2, 6N HCl) |
Boiling point | 393.91°C (estimate) |
density | 1,34g/cm |
refractive index | 1.5216 (estimate) |
storage temp. | Store at RT. |
solubility | 1 M HCl: 0.5 M at 20 °C, clear, colorless |
pka | 2.13(at 25℃) |
form | Solid |
color | White |
PH | 5-7 (10g/l, H2O, 20℃) |
Water Solubility | Soluble |
Merck | 14,5975 |
BRN | 1722294 |
Stability: | Stable. Incompatible with strong oxidizing agents. |
Item |
Specification |
Appearance: |
White crystals or crystalline Powder |
Identification: |
Infrared absorption spectrum |
Specific Rotation[a]D20 |
+22.4°~+24.7° |
PH: |
5.6~6.1 |
Chloride(Cl): |
≤0.05% |
Sulfate(SO4): |
≤0.03% |
Iron(Fe): |
≤30ppm |
Heavy Metals(Pb): |
≤15ppm |
Loss on drying: |
≤0.3% |
Residue on ignition: |
≤0.4% |
Organic volatile impurities: |
Meet the requirements |
Assay: |
98.5%~101.5% |
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