CHEMICAL AND PHYSICAL PROPERTIES
| Physical Description | Colorless to yellow crystals; [ICSC] Aqueous solution is dark reddish-brown; [CHEMINFO] |
|---|---|
| Color/Form | Colorless to yellow crystals |
| Melting Point | 337 °C |
| Solubility | Slightly soluble in alcohols, hydroxylic solvents. Practically insoluble in nonpolar organic solvents. |
| Density | 1.22 to 1.27 @ 20 °C/20 °C |
| Vapor Pressure | 0.00000181 [mmHg] |
| LogP | log Kow = -4.60 |
| Stability/Shelf Life | Under normal storage conditions, in original containers, shelf life is indefinitely long; dry chem sensitive to UV light. |
| Decomposition | When heated to decomposition, diquat dibromide emits very toxic fumes of /nitrogen oxides and hydrogen bromide/. |
| Corrosivity | The active ingredient is corrosive to metals. |
| Other Experimental Properties | MP: below 320 °C, decomp, also reported as mp 335-340 °C; Sol in water @ 20 °C: 70%; Insol in organic solvents; slightly soluble in alcohol; Max absorption: 308.31 nm (E= 18,000); Stable in acid or neutral soln /Monohydrate/ |
| Chemical Classes | Pesticides -> Herbicides, Bipyridyl |
COMPUTED DESCRIPTORS
| Molecular Weight | 344.04 g/mol |
|---|---|
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 2 |
| Rotatable Bond Count | 0 |
| Exact Mass | 343.93467 g/mol |
| Monoisotopic Mass | 341.93672 g/mol |
| Topological Polar Surface Area | 7.8 Ų |
| Heavy Atom Count | 16 |
| Formal Charge | 0 |
| Complexity | 183 |
| 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 | 3 |
| Compound Is Canonicalized | Yes |
PRODUCT INTRODUCTION
description
Diquat dibromide is a non-selective contact herbicide, algicide, desiccant, and defoliant that produces desiccation and defoliation most often available as the dibromide, diquat dibromide.