CHEMICAL AND PHYSICAL PROPERTIES
| Physical Description | Metribuzin is a colorless crystalline solid. Used as an herbicide. (NIOSH, 2022) |
|---|---|
| Color/Form | Colorless crytals |
| Odor | Weak characteristic odor |
| Boiling Point | 132 °C @ 2 Pa |
| Melting Point | 257 °F (NIOSH, 2023) |
| Solubility | 0.1 % (NIOSH, 2023) |
| Density | 1.31 (NIOSH, 2023) - Denser than water; will sink |
| Vapor Pressure | 4e-07 mmHg (NIOSH, 2023) |
| LogP | log Kow= 1.7 |
| Decomposition | When heated to decomposition it emits very toxic fumes of /nitrogen oxides and sulfur oxides/. |
| Corrosivity | Non-corrosive |
| Ionization Efficiency | Positive |
| Dissociation Constants | pKa= 1.0 |
| Collision Cross Section | 150.5 Ų [M+H]+ [CCS Type: DT, Method: stepped-field] |
| Kovats Retention Index | 1819 1835 1849 1829 1813 1832.7 1832 1826.6 |
| Other Experimental Properties | Slight sulfurous odor /Technical metribuzin/ |
| Chemical Classes | Pesticides -> Herbicides, Triazine |
SAFETY INFORMATION
| Signal word | Warning |
|---|---|
| Pictogram(s) |
 Exclamation Mark Irritant GHS07  Environment GHS09 |
| GHS Hazard Statements |
H302:Acute toxicity,oral H410:Hazardous to the aquatic environment, long-term hazard |
| Precautionary Statement Codes |
P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P270:Do not eat, drink or smoke when using this product. P273:Avoid release to the environment. P391:Collect spillage. Hazardous to the aquatic environment P501:Dispose of contents/container to..… |
COMPUTED DESCRIPTORS
| Molecular Weight | 214.29 g/mol |
|---|---|
| XLogP3 | 1.7 |
| Hydrogen Bond Donor Count | 1 |
| Hydrogen Bond Acceptor Count | 5 |
| Rotatable Bond Count | 2 |
| Exact Mass | 214.08883226 g/mol |
| Monoisotopic Mass | 214.08883226 g/mol |
| Topological Polar Surface Area | 96.4 Ų |
| Heavy Atom Count | 14 |
| Formal Charge | 0 |
| Complexity | 316 |
| 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
Metribuzin is a colorless crystalline solid. Used as an herbicide. (NIOSH, 2022)