Ethephon CAS#16672-87-0
Highly Effective Plant Growth Regulator: Ethephon is one of the most widely used plant growth regulators, helping optimize plant development and crop management.
Promotes Faster Fruit Maturation: Accelerates the ripening process, enabling crops to reach maturity more quickly and supporting timely harvesting.
Suitable for Multiple Crops: Widely applied to wheat, coffee, tobacco, cotton, rice, and other agricultural crops, offering broad application versatility.
Low Toxicity and Rapid Conversion: Features low toxicity and is quickly converted into ethylene within plants, providing effective growth regulation with minimal residue concerns.
Ethephon CAS#16672-87-0
2-Chloroethylphosphonic acid (Ethephon) is a widely used plant growth regulator. It is commonly applied to crops such as wheat, coffee, tobacco, cotton, and rice to promote faster fruit maturation and support earlier harvest.
Ethephon has relatively low toxicity, and when applied to plants, it is rapidly converted into ethylene, the active compound responsible for its growth-regulating effects.
Ethephon Chemical Properties
| Melting point | 70-72 °C(lit.) |
| Boiling point | 265°C(lit.) |
| density | 1.2 |
| storage temp. | 2-8°C |
| Water Solubility | Completely soluble in water |
| solubility | DMF: 30 mg/ml,DMSO: 30 mg/ml,Ethanol: 25 mg/ml,PBS (pH 7.2): 10 mg/ml |
| pka | 1.88±0.10(Predicted) |
| form | Powder |
| color | White to beige |
| Sensitive | Hygroscopic |
| Merck | 143732 |
| BRN | 1751208 |
| Stability: | Hygroscopic |
| Major Application | agriculture |
| environmental | |
| InChI | 1S/C2H6ClO3P/c3-1-2-7(4,5)6/h1-2H2,(H2,4,5,6) |
| InChIKey | UDPGUMQDCGORJQ-UHFFFAOYSA-N |
| SMILES | OP(O)(=O)CCCl |
| LogP | -0.22 |
| CAS DataBase Reference | 16672-87-0(CAS DataBase Reference) |
| NIST Chemistry Reference | Phosphonic acid, (2-chloroethyl)-(16672-87-0) |
| EPA Substance Registry System | Ethephon (16672-87-0) |
Safety Information
| Hazard Codes | C |
| Risk Statements | 20/21-34-52/53 |
| Safety Statements | 26-28-36/37/39-45-61-28A |
| RIDADR | UN 2928 6.1/PG 2 |
| WGK Germany | 2 |
| RTECS | SZ7100000 |
| HazardClass | 6.1 |
| PackingGroup | II |
| HS Code | 29319090 |
| Storage Class | 6.1C - Combustible acute toxic Cat.3 |
| toxic compounds or compounds which causing chronic effects | |
| Hazard Classifications | Acute Tox. 3 Dermal |
| Acute Tox. 4 Inhalation | |
| Acute Tox. 4 Oral | |
| Aquatic Chronic 2 | |
| Eye Dam. 1 | |
| Skin Corr. 1C | |
| Hazardous Substances Data | 16672-87-0(Hazardous Substances Data) |
| Toxicity | LD50 orally in mice: 2850 mg/kg (Hennighausen) |
Product Application of Ethephon CAS#16672-87-0
Ethephon is a plant growth regulator used to promote fruit ripening, abscission, flower induction, and other plant physiological responses. It is registered for use on various food, feed, and non-food crops, including rubber plants and flax, as well as greenhouse nursery stock and outdoor ornamental plants, with primary application in cotton cultivation.
The product is typically applied to plant foliage using ground or aerial spraying equipment, and may also be used in home gardens via hand sprayers for certain vegetables and ornamental plants.
Usage restrictions include prohibitions on application through irrigation systems, restrictions on grazing or feeding livestock in treated areas, and specific pre-harvest intervals ranging from 2 to 60 days depending on the crop type.



