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| Names | |
|---|---|
| IUPAC name (RS)-2-Chloro-N-(2,4-dimethyl-3-thienyl)-N-(2-methoxy-1-methylethyl)acetamide | |
| Other names Frontier Herbicide Dimethenamid-P ((S)-isomer) | |
| Identifiers | |
3D model (JSmol) | |
| ChEBI | |
| ChemSpider |
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| ECHA InfoCard | 100.121.887 |
| EC Number |
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| KEGG |
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| RTECS number |
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| UNII | |
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| Properties | |
| C12H18ClNO2S | |
| Molar mass | 275.79 g/mol |
| Appearance | Tan to brown liquid |
| Density | 1.141 g/cm3 |
| Hazards | |
| Occupational safety and health (OHS/OSH): | |
Main hazards | Xn (harmful) |
| GHS labelling: | |
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| Warning | |
| H302,H317,H332,H410,H411 | |
| P261,P264,P270,P271,P272,P273,P280,P301+P312,P302+P352,P304+P312,P304+P340,P312,P321,P330,P333+P313,P363,P391,P501 | |
| Flash point | 151 °C (304 °F; 424 K) |
| Safety data sheet (SDS) | MSDS fromBASF |
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa). | |
Dimethenamid is a widely usedherbicide belonging to the chloroacetamide class (group 15). Group 15 herbicides inhibit synthesis of certain long-chain fatty acids, thus reducing plant growth.[3] In 2001, about 7 million pounds (3,200 t) of dimethenamid were used in the United States.[4] Dimethenamid is registered for control of annual grasses, certain annual broadleaf weeds and sedges in field corn, seed corn, popcorn and soybeans. Supplemental labeling also allows use on sweet corn, grain sorghum, dry beans and peanuts. In registering dimethinamide (SAN 582H/Frontier), EPA concluded that the primary means of dissipation of dimethenamid applied to the soil surface isphotolysis, whereas below the surface loss was due largely to microbial metabolism. The herbicide was found to undergo anaerobic microbial degradation under denitrifying, iron-reducing, sulfate-reducing, or methanogenic conditions.[5] In that study, more than half of the herbicide carbon (based on14C-labeling) added was found to be incorporated irreversibly into soil-bound residue.
