Paraquat Dichloride 20% SL Herbicide
Features
Paraquat Dichloride 20% SL is a fast-acting, non-selective contact herbicide widely used for the control of broadleaf weeds and grasses in non-cropland, orchards, and industrial areas. It rapidly destroys green plant tissue by disrupting cell membranes through oxidative stress, offering visible results within hours. This formulation is water-soluble, easy to apply via foliar spray, and highly effective under a wide range of environmental conditions. Compatible with other herbicides such as Diuron and Diquat for enhanced efficacy and extended residual control.
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| Category | Herbicide |
|---|---|
| Active Ingredient | Paraquat Dichloride 20% (w/v) |
| Appearance | Blue-green to dark green liquid |
Key Specifications
| Parameter | Details |
|---|---|
| CAS No. | 1910-42-5 |
| EINECS No. | 217-615-7 |
| Molecular Formula | C₁₂H₁₄Cl₂N₂ |
| Molecular Weight | 257.16 g/mol |
| Density (20°C) | 1.24–1.28 g/cm³ |
| Chemical Name | 1,1′-Dimethyl-4,4′-bipyridinium dichloride |
| Flash Point | >100°C (Non-flammable) |
| Solubility | Freely soluble in water; slightly soluble in ethanol and acetone; insoluble in hydrocarbons |
| Shelf Life | 2 years (in original packaging) |
| Other Trade Names | Cyclone, Starfire, Weedol, Boa, Crisquat, Dextrone, Dipaxone, Herboxone, Priquat, Scythe, Gramocil (+ diuron), PDQ (+ diquat), Preeglox L (+ diquat), Surefire (+ diuron), and many more. |
| Target Weeds | Annual broadleaf weeds, grasses in non-cropland areas, orchards, field borders, industrial zones |
| Mode of Action | Contact herbicide. Disrupts Photosystem I, producing superoxide radicals that damage plant cells. Causes rapid desiccation. Not systemically translocated. |
Available Formulations & Compatibility
| Product Type | Formulation | Abbreviation | Concentration | Application | Target Use | Compatibility & Synergy |
|---|---|---|---|---|---|---|
| Paraquat SL | Soluble Liquid | SL | 20%, 24%, 200g/L, 260g/L | Foliar spray | Non-cropland quick control | Diuron 50% WP (1:3) → Extended residual effectDiquat 20% SL (1:2) → Boost contact action |
| Paraquat SG | Water-Soluble Granule | SG | 40%, 50% | Water spray | Resistant broadleaf/grasses | MSMA 72% SG (1:4) → Grass synergyAtrazine 50% SG (1:5) → Broadleaf spectrum |
| Paraquat WP | Wettable Powder | WP | 30%, 50% | Tank mix spray | Orchards & industry sites | Alachlor 30% WP (1:3) → Pre-emergent supportPyrithiobac 10% WP (1:4) → Grass resistance |
| Paraquat TK / TC | Technical Material | TK, TC | 30.5%, 42%, 95% | Formulation raw use | Custom pesticide blends | 2,4-D TC (1:2) → Broad-spectrum controlMonolinuron TC (1:3) → Residual enhancement |