CHEMICAL AND PHYSICAL PROPERTIES
| Color/Form | Cream-colored solid |
|---|---|
| Odor | Weakly pungent |
| Melting Point | 195.4 °C |
| Solubility | In hexane <0.2, acetone 13.66, toluene 0.013, ethyl acetate 2, methylene chloride 3.8 (all in g/L, 20 °C) |
| Density | 1.53 gm/cu cm at 23 °C |
| Vapor Pressure | 1.1X10-8 mPa /SRC: 8.25X10-14 mm Hg/ at 25 °C |
| LogP | log Kow = 1.39 (pH 5); -0.48 (pH 7); -2.06 (pH 9) |
| Dissociation Constants | pKa = 4.35 at 20 °C |
SAFETY INFORMATION
| Signal word | Warning |
|---|---|
| Pictogram(s) |
 Environment GHS09 |
| GHS Hazard Statements |
H410:Hazardous to the aquatic environment, long-term hazard |
| Precautionary Statement Codes |
P273:Avoid release to the environment. P391:Collect spillage. Hazardous to the aquatic environment P501:Dispose of contents/container to..… |
COMPUTED DESCRIPTORS
| Molecular Weight | 503.5 g/mol |
|---|---|
| XLogP3 | 0.6 |
| Hydrogen Bond Donor Count | 3 |
| Hydrogen Bond Acceptor Count | 12 |
| Rotatable Bond Count | 10 |
| Exact Mass | 503.07806961 g/mol |
| Monoisotopic Mass | 503.07806961 g/mol |
| Topological Polar Surface Area | 209 Ų |
| Heavy Atom Count | 33 |
| Formal Charge | 0 |
| Complexity | 876 |
| Isotope Atom Count | 0 |
| Defined Atom Stereocenter Count | 0 |
| Undefined Atom Stereocenter Count | 0 |
| Defined Bond Stereocenter Count | 0 |
| Undefined Bond Stereocenter Count | 0 |
| Covalently-Bonded Unit Count | 1 |
| Compound Is Canonicalized | Yes |
PRODUCT INTRODUCTION
description
Metsulfuron-methyl is a residual sulfonylurea herbicide that kills broadleaf weeds and some annual grasses. It is a systemic compound with foliar and soil activity, that inhibits cell division in shoots and roots. It has very low toxicity to mammals, birds, fish, and insects, but is a moderate eye irritant.