
Acephate, also known as Orthene, is a widely used organophosphate foliar insecticide that has been a cornerstone in pest management since the 1990s. This article provides an in-depth analysis of its chemical properties, technical specifications, applications, and the company behind its production, Hebei Dongfeng Chemical Technology Co., Ltd.
Acephate is a synthetic organophosphate compound designed to control a broad spectrum of pests, including leaf miners, caterpillars, sawflies, thrips, aphids, and other sucking and chewing insects. Its effectiveness stems from its ability to inhibit acetylcholinesterase (AChE), an enzyme critical to nerve function in insects. This mechanism disrupts their nervous system, leading to paralysis and eventual death. Unlike some organophosphates, Acephate is metabolized into methamidophos, which is less toxic to mammals, making it a safer option for agricultural use.
Available in multiple formulations, Acephate caters to diverse agricultural needs. These include 97% TC technical concentrate, 75% SP soluble powder, 40% EC emulsifiable concentrate, 98% TC technical concentrate, 97% SG soluble granules, 30% EC emulsifiable concentrate, and 97% WDG water dispersable granule. Each formulation is tailored for specific application methods, ensuring flexibility for farmers and pest control professionals.
Acephate’s chemical and physical properties are critical to its efficacy and safety. Below is a detailed table summarizing its key specifications:
| Property | Details |
|---|---|
| Melting Point | 93°C |
| Density | 1.35 g/cm³ |
| Vapor Pressure | 2.26 × 10⁻⁴ Pa at 24°C |
| Flash Point | 2°C |
| Storage Temperature | Approx. 4°C |
| Solubility | Soluble in chloroform, DMSO, and water |
| pKa | 11.00 ± 0.46 (predicted) |
| Form | White to yellow solid |
| Water Solubility | Readily soluble |
These specifications highlight Acephate’s stability and compatibility with various solvents, making it versatile for different application methods. Its low vapor pressure and high solubility in water ensure effective distribution and minimal environmental persistence.
Acephate is classified under the Globally Harmonized System (GHS) with the signal word Warning and hazard statements H302+H312, indicating it is harmful if swallowed or in contact with skin. The GHS07 symbol (exclamation mark) underscores its potential for acute toxicity. Safety precautions include wearing protective gear during application and avoiding inhalation or skin contact.
The Hazard Codes Xn (harmful) and F (flammable) further emphasize the need for careful handling. The UN1648 3/PG 2 classification indicates it is a hazardous material requiring specific transport regulations. For detailed safety data, refer to the product page.
Acephate’s broad-spectrum activity makes it a vital tool in modern agriculture. It is particularly effective against:
It is used in a wide range of crops, including cotton, ornamentals, forestry, tobacco, fruits, vegetables, and other horticultural products. Its systemic action allows it to be absorbed by plants, providing protection against pests that feed on leaves and stems. Acephate’s moderate persistence ensures it remains effective for several days while minimizing the risk of resistance development.
According to the National Institute of Standards and Technology (NIST), proper use of pesticides like Acephate requires adherence to safety protocols and environmental regulations to mitigate risks. NIST’s guidelines on chemical safety and measurement standards provide a framework for evaluating the efficacy and safety of such compounds.
Hebei Dongfeng Chemical Technology Co., Ltd., based in China, is a leading manufacturer and supplier of agricultural chemicals, including Acephate. With a focus on innovation and quality, the company has established itself as a reliable provider of pest control solutions. Their product range includes various formulations of Acephate, catering to the diverse needs of farmers and agricultural professionals worldwide.
The company’s commitment to sustainability and safety aligns with global standards for chemical production. By adhering to international regulations and investing in research and development, Hebei Dongfeng ensures its products meet the highest quality and safety benchmarks.
Acephate remains a critical component of integrated pest management strategies due to its effectiveness, versatility, and relatively low toxicity to mammals. Its chemical properties, as detailed in this article, make it a reliable choice for controlling a wide range of pests in agriculture. For more information about Acephate and its applications, visit the product page or explore the offerings of Hebei Dongfeng Chemical Technology Co., Ltd.
1. National Institute of Standards and Technology (NIST). Retrieved from https://www.nist.gov/
2. Acephate Product Page. Hebei Dongfeng Chemical Technology Co., Ltd.