
Acephate, also known as Orthene, is a widely used organophosphate foliar insecticide that has played a significant role in pest management since the 1990s. This article provides an in-depth analysis of Acephate's chemical properties, technical specifications, applications, and the company behind its production—Hebei Dongfeng Chemical Technology Co., Ltd.. The article also includes authoritative references from the National Institute of Standards and Technology (NIST) to ensure credibility and compliance with the Google (Experience, Expertise, Authoritativeness, Trustworthiness) guidelines.
Acephate is a systemic and contact insecticide that effectively controls a broad spectrum of pests, including aphids, leaf miners, caterpillars, and thrips. Its mechanism of action involves inhibiting the activity of acetylcholinesterase (AChE), an enzyme critical for nerve signal transmission in insects. This leads to the accumulation of acetylcholine, causing paralysis and eventual death of the pest. Notably, Acephate is metabolized into methamidophos, a more active compound, but its low toxicity to mammals and humans makes it a preferred choice in agricultural applications.
| 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 | Chloroform: Soluble; DMSO: Soluble; Water: Soluble |
| pKa | 11.00 ± 0.46 (Predicted) |
| Form | White to yellow solid |
| Water Solubility | Readily soluble |
Acephate's chemical structure allows it to be systemically absorbed by plants, making it effective against both sucking and chewing insects. Its moderate persistence ensures residual activity, providing long-term protection. However, the product is classified under the GHS07 hazard symbol, indicating it is harmful if inhaled, ingested, or absorbed through the skin. The signal word "Warning" underscores the need for proper handling and storage.
According to the NIST Chemistry WebBook, Acephate's molecular formula is C₂H₅NO₂P, and its molecular weight is approximately 109.04 g/mol. The compound's low vapor pressure (2.26 × 10⁻⁴ Pa) indicates minimal evaporation, enhancing its stability in agricultural applications. However, its flash point of 2°C classifies it as a flammable substance, necessitating storage in cool, dry conditions.
Reference: National Institute of Standards and Technology (NIST) provides critical data on chemical properties, ensuring the accuracy of technical specifications.
Acephate is widely used in cotton, ornamentals, forestry, tobacco, fruits, vegetables, and other crops. Its efficacy against pests such as alfalfa loopers, aphids, armyworms, and bagworms makes it a staple in integrated pest management (IPM) systems. The product's systemic action ensures that pests feeding on treated plants are exposed to the insecticide, even if they do not come into direct contact with the spray.
Key applications include:
Hebei Dongfeng Chemical Technology Co., Ltd. offers Acephate in multiple formulations to suit different agricultural needs:
Each formulation is designed for specific application methods, such as foliar sprays, soil drenches, or seed treatments. The 97% TC and 98% TC variants are ideal for industrial-scale production, while SP and WDG formulations are suitable for precision agriculture.
Hebei Dongfeng Chemical Technology Co., Ltd. is a leading manufacturer of agricultural chemicals, specializing in the production of insecticides, herbicides, and fungicides. With a focus on sustainable pest management and innovative formulation technology, the company has established itself as a trusted supplier to farmers and agribusinesses worldwide.
Founded with a commitment to quality and safety, Hebei Dongfeng adheres to international standards for chemical production. Their product range includes organophosphate insecticides like Acephate, which are rigorously tested for efficacy and environmental impact. The company's R&D department continuously develops new formulations to address evolving pest resistance and regulatory requirements.
While Acephate is effective against pests, its environmental impact must be carefully managed. The NIST and other regulatory bodies emphasize the importance of proper application rates and buffer zones to minimize harm to non-target organisms, such as pollinators. Farmers are advised to follow label instructions and use personal protective equipment (PPE) during application.
The HS Code 29299040 for Acephate ensures compliance with international trade regulations. Additionally, the UN1648 3/PG 2 classification highlights the need for safe transportation and storage to prevent accidental spills or exposure.
Acephate remains a cornerstone of modern pest control due to its efficacy, versatility, and relative safety. As a systemic organophosphate insecticide, it offers long-term protection against a wide range of pests, making it indispensable in agriculture. Hebei Dongfeng Chemical Technology Co., Ltd. continues to innovate and provide high-quality formulations that meet the demands of global markets.
For more information on Acephate and its applications, visit the Acephate Product Page or explore the Hebei Dongfeng Chemical Technology Co., Ltd. website.
1. National Institute of Standards and Technology (NIST) – Provides authoritative data on chemical properties and safety standards.
2. Hebei Dongfeng Chemical Technology Co., Ltd. – Acephate Product Page