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) |
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 |
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 |