L-METHIONINE 99% FOR BIOCHEMISTRY
(S)-2-Amino-4-(methylmercapto)butyric acid; L-2-Amino-4-(methylthio)butanoic acid
| Product Code | B-01698 | BRAND | Bio-Chem |
|---|---|---|---|
| Grade | For Biochemistry | CAS No | 63-68-3 |
| Purity | 98 % | Molecular Weight | 149.21 |
| H.S.Code | 2930.40000 | Shelf Life | 60 Months |
| Molecular Formula | C5H11NO2S |
Physical Properties
| Physical state at 20 °C | Solid | Colour | White powder |
|---|---|---|---|
| Solubility in water [% weight] | 56.6 g/L @ 25°C | Melting point/ Freezing point [°C] | 284 °C |
| Decomposition point [°C] | 276 °C | pH Value | 5 .1 - 6.1 |
| Flash point [°C] | 284 °C | Odour | Slight odour |
Packaging
Specification
| Appearance | White powder |
| Assay (by HClO4 titration) | Min 99% |
| Specific optical rotation ([?]20/D) | +22.5 to + 24 deg |
| pH (2.5% solution) | 5.5 – 6.5 |
| Loss on drying (at 105°C) | Max 0.3% |
| Residue on ignition (as SO4) | Max 0.1% |
| Chloride (Cl) | Max 0.02% |
| Sulphate (SO4) | Max 0.03% |
| Iron (Fe) | Max 0.001% |
| Heavy metal (as Pb) | Max 0.001% |
| Ammonium (NH4) | Max 0.01% |
| Foreign amino acids | Max 0.3% |
| Other ninhydrin positive substances (as glycine) | Max 0.1% |
Safety Information and Hazard Symbols
Symbol: GHS02, GHS05
Signal Word: Danger