DL-Methionine 99% For Biochemistry
(Confirms to BP)
(±)-2-Amino-4-(methylmercapto)butyric acid; DL-2-Amino-4-(methylthio)butanoic acid
Product Code. |
01697 |
Grade |
|
Purity |
99% |
CAS No. |
59-51-8 |
Molecular Formula |
C5H11NO2S |
Molecular Weight |
149.21 |
H.S.Code |
2930.40000 |
Shelf Life |
60 Months |
Physical Properties
| Physical state at 20 °C |
Solid |
Colour |
White granular |
Melting point/ Freezing point [°C] |
280 °C |
| Boiling point [°C] |
186 °C |
Density [g/cm3] |
1.34 |
Solubility in water [% weight] |
Soluble in water |
Packaging
Specification
| Appearance | White to almost white, crystalline powder or small flakes, melt at 270°C |
| Assay (potentiometric; on anhydrous basis) | 99.0-101.0% |
| Solubility | Sparingly soluble in water, very slightly soluble in alcohol. It dissolves in dilute acids and in dilute solutions of the alkali hydroxides |
| Identifications | To comply BP test |
| Appearance of solution | To comply BP test |
| Loss on drying (at 105°C; 3 hrs) | Max 0.5% |
| pH (2% solution in water) | 5.4 to 6.1 |
| Chlorides | Max 0.02% |
| Sulphates | Max 0.02% |
| Heavy metal (as Pb) | Max 0.002% |
| Sulphated ash | Max 0.1% |
| Related Substances ( by TLC) | To comply BP test |
Safety Information and Hazard Symbols