Ethephon/Ethylene 40% AS Plant Growth Regulator
Features
Ethephon 40% AS is a fast-acting plant growth regulator that promotes fruit ripening, enhances organ abscission, and improves crop management. It’s versatile, compatible with other agrochemicals, and available in multiple formulations for flexible use.
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| Category | Plant Growth Regulator |
|---|---|
| Active Ingredient | Ethephon/Ethylene 40% (w/v) |
| Appearance | Colorless to pale yellow transparent liquid |
Key Parameters
| Parameter | Details |
|---|---|
| CAS Number | 16672-87-0 |
| EINECS Number | 240-718-3 |
| Molecular Formula | C₂H₆ClO₃P |
| Molecular Weight | 144.49 g/mol |
| Density | 1.28-1.30 g/cm³ (20°C) |
| Chemical Name | 2-Chloroethylphosphonic acid |
| Flash Point | >100°C (Non-flammable) |
| Solubility | Freely soluble in water, ethanol; Slightly soluble in benzene; Insoluble in petroleum ether |
| Shelf Life | 2 years in original packaging |
| Other Names | See detailed trade names and mixtures (e.g. ‘Florel’, ‘Boll’d’, ‘Etheverse’, etc.) |
Target Effects
- Promotes fruit ripening
- Induces organ abscission
- Facilitates sex conversion (cotton, tomato, rubber trees, tobacco)
Mode of Action
Releases ethylene in plants, regulates ACC synthase activity, and induces abscission layer formation and expression of ripening-related genes.
Formulations and Applications
| Product Name | Formulation | Concentration | Application Method | Target Effects | Compatibility with Other Agrochemicals |
|---|---|---|---|---|---|
| Ethephon/Ethylene | Aqueous Solution | 40% | Foliar spray | Cotton defoliation, pineapple flowering | Thidiazuron 50% SC (1:4) → Enhanced defoliation; Mepiquat chloride 25% AS (1:3) → Synergistic plant shaping |
| Ethephon/Ethylene | Soluble Liquid | 10% | Stem painting | Latex flow promotion, tomato ripening | Glyphosate 41% SL (1:5) → Herbicide-ripening synergy; Sodium nitrophenolate 1.8% SL (1:6) → Physiological activation |
| Ethephon/Ethylene | Paste | 1%-20% | Spot application | Tobacco sucker control, mango flowering | Chlormequat chloride 50% AS (1:2) → Dual dwarfing; Paclobutrazol 15% WP (1:4) → Precise flowering control |
| Ethephon/Ethylene | Dustable Powder | 20% | Dusting/seed treatment | Wheat lodging resistance, corn maturation | Uniconazole 5% WP (1:5) → Synergistic lodging control; Gibberellic acid 4% SP (1:6) → Reverse regulation |
| Ethephon/Ethylene | Technical Concentrate | 75% | Formulation dilution | Processing intermediate | Mepiquat chloride TC (1:3) → Compound ripener; Thidiazuron TC (1:2) → Defoliant base material |
| Ethephon/Ethylene | Technical Material | 85%-95% | Formulation processing | Custom raw materials | Glyphosate TC (1:4) → Total vegetation ripening; Paclobutrazol TC (1:3) → Growth regulation complex |