Methionic acid
Methionic acid
CAS: 503-40-2
Molecular Formula: CH4O6S2
Methionic acid - Names and Identifiers
| Name | Methionic acid |
| Synonyms | Methionicacid Methane disuL Methionic acid Disulfomethane METHANEDISULFONIC ACID Methanedisulphonic acid methylenedisufonic acid methylenedisulfonic acid METHANE DISULFONIC ACID PYRIDINIUM SALT |
| CAS | 503-40-2 |
| EINECS | 207-966-4 |
| InChI | InChI=1/CH4O6S2/c2-8(3,4)1-9(5,6)7/h1H2,(H,2,3,4)(H,5,6,7) |
Methionic acid - Physico-chemical Properties
| Molecular Formula | CH4O6S2 |
| Molar Mass | 176.17 |
| Density | 1.6517 (rough estimate) |
| Melting Point | 96-100° |
| Boling Point | 263℃ at 101.3kPa |
| Water Solubility | 2458g/L(25 ºC) |
| Solubility | DMSO (Sparingly, Heated), Methanol (Slightly) |
| Vapor Presure | 0Pa at 25℃ |
| Appearance | Solid |
| Color | White to Off-White |
| pKa | -0.71±0.50(Predicted) |
| PH | -0.96 at 23.9℃ and 1g/L |
| Storage Condition | Hygroscopic, -20°C Freezer, Under inert atmosphere |
| Stability | Hygroscopic |
| Refractive Index | 1.5300 (estimate) |
| Use | Widely used in electroplating hard chromium process, as the main additive |
Methionic acid - Reference Information
| LogP | -1.49 at 25℃ and pH1 |
| dissociation constant | -0.17 at 25 ℃ |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| use | widely used in hard chromium plating process, as the main additive |
Last Update：2024-04-09 21:21:28
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