Sodium Methyl Mercaptide
SMM, Sodium Methanethiolate, Sodium Methyl Thiolate
- CAS
- 5188-07-8
- EC
- 225-969-9
- Sectors
- Agriculture, Pharma & Healthcare, Plastics & Polymers
Sodium Methyl Mercaptide (CAS 5188-07-8) is a highly reactive organosulfur compound supplied as a 20-25% aqueous solution or as a moisture-sensitive solid, and it acts as a powerful nucleophile that introduces methylthio groups into organic molecules, serving as a key intermediate in agrochemical, pharmaceutical and polymer production. It is a powerful nucleophile, essential for the introduction of methylthio groups into various organic molecules during complex synthesis.
This chemical is a critical intermediate in the large-scale production of Agrochemicals, specifically for the synthesis of systemic pesticides and herbicides. Its high reactivity ensures efficient conversion rates in industrial reactors, supporting the manufacturing of high-demand crop protection products.
The substance is characterized by its strong odor and extreme sensitivity to air and moisture, requiring handling under nitrogen blankets. It provides a specialized sulfur source that is vital for the pharmaceutical industry in the synthesis of methionine and other sulfur-containing active ingredients.
Typical Properties
| Molecular formula | CH4S.Na |
|---|---|
| Molecular weight | 70.09 g/mol |
| Appearance | Very faint yellowish red clear liquid |
| Form | Powder |
| Color | White to off-white |
| Density | 1.12[at 20°C] |
| Water solubility | soluble |
| Flash point | 27°C |
| GHS signal word | Danger · Flammable, Corrosive, Acute toxicity |
| HS code | 29309090 |
| Grades available | Technical Grade |
Typical literature values for identification; lot-specific results are stated on the certificate of analysis (COA) and the safety data sheet (SDS) that accompany every delivery.
Sodium Methyl Mercaptide
Applications
- Pesticide Production: Acts as a key building block for the synthesis of herbicides like Metribuzin and insecticides like Methomyl.
- Pharmaceutical Intermediate: Used in the synthesis of essential amino acids and various therapeutic agents requiring methylthio functional groups.
- Polymer Industry: Functions as a chain transfer agent and modifier in specialized polymerizations to control molecular weight and properties.
Safety & Risks
Classified as Flammable, Corrosive, and Toxic. Releases highly toxic Methyl Mercaptan Gas upon contact with acids; handle with Self-Contained Breathing Apparatus (SCBA) and Acid-Resistant PPE.
Packaging
200 kg Steel Drums, 1000 kg IBC Tanks, and specialized Isotanks for bulk transport.