CHEMICAL AND PHYSICAL PROPERTIES
| Physical Description | Colorless or white solid; [HSDB] Greyish-brown odorless granules; [MSDSonline] |
|---|---|
| Color/Form | Colorless crystals |
| Melting Point | 194.8-197.4 °C (decomposition) |
| Solubility | Solubility in acetone 35,000 mg/l, ethanol 1000 mg/l, toluene 570 mg/l, n-octanol 7.7 mg/l, n-hexane 1.5 mg/l (all measured at 25 °C) |
| Density | 1.61 @ 20 °C |
| Vapor Pressure | <5X10-3 mPa (<3.75X10-8 mm Hg) @ 25 °C |
| LogP | log Kow = 0.06 @ 25 °C, unstated pH |
| Stability/Shelf Life | Compatible in tank mixtures with atrazine, bromoxynil, cyanazine, dicamba & 2,4-D. |
| Dissociation Constants | pKa = 5.1 |
| Other Experimental Properties | On hydrolysis (50 °C): DT50 10 hrs (pH 3 and pH 5), >300 hrs (pH 7 and pH 9), 120 hrs (pH 10); stable up to 100 °C. |
| Chemical Classes | Pesticides -> Herbicides, Sulfonylurea |
SAFETY INFORMATION
| Signal word | Warning |
|---|---|
| Pictogram(s) |
 Environment GHS09 |
| GHS Hazard Statements |
H400:Hazardous to the aquatic environment, acute 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 | 468.3 g/mol |
|---|---|
| XLogP3 | 3.6 |
| Hydrogen Bond Donor Count | 2 |
| Hydrogen Bond Acceptor Count | 13 |
| Rotatable Bond Count | 9 |
| Exact Mass | 468.03628256 g/mol |
| Monoisotopic Mass | 468.03628256 g/mol |
| Topological Polar Surface Area | 154 Ų |
| Heavy Atom Count | 31 |
| Formal Charge | 0 |
| Complexity | 707 |
| 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
Primisulfuron-methyl is a urea herbicide that is used on crop and non- crop areas for the control of grass weeds and many kinds of broad-leaved weeds. The compound is a selective postemergence systemic herbicide that is rapidly absorbed by plants and transported throughout the plant roots and foliage. The herbicide works by blocking cell growth in the active growing regions of the plant. The herbicide also acts to inhibit photosynthesis