Acetamiprid Bifenthrin Granules Toxicity Control
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Solution Overview
Problem
Existing compositions of acetamiprid and bifenthrin exhibit high toxicity to users, particularly in terms of acute oral, dermal, and inhalation toxicity, posing a significant concern for commercial utilization and user safety.
Innovation Solution
A composition comprising acetamiprid, bifenthrin, and a toxicity control agent, specifically a mixture of lignin sulfonic acid salt and castor oil ethoxylate, is developed to reduce toxicity levels, with the lignin sulfonic acid salt selected from sodium lignosulfonate and calcium lignosulfonate, and a ratio of castor oil ethoxylate to lignin sulfonic acid salt in the range of 1:4 to 1:20, formulated into granules and applied as water dispersible granules to minimize user exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If acetamiprid and bifenthrin are used in combination for enhanced pesticidal activity, then the effectiveness against insects and acarids is improved, but the toxicity to the user increases
Solution Approach 1:
A toxicity control agent comprising lignin sulfonic acid salt and castor oil ethoxylate is introduced as an intermediary substance that mediates between the active ingredients (acetamiprid and bifenthrin) and the user/environment. This agent reduces the harmful effects of the combination while preserving the pesticidal activity, effectively acting as a protective barrier or modifier that controls toxicity without compromising efficacy.
Solution Approach 2:
The physical and chemical parameters of the composition are modified by incorporating the toxicity control agent in specific proportions (0.1-10% w/w). This changes the overall toxicity profile of the composition, transforming it from a high-toxicity mixture to a low-toxicity formulation while maintaining the bioactive properties of the active ingredients against target pests.
2Object-affected harmful factors
If the composition is formulated to reduce toxicity levels, then user safety is improved, but the pesticidal efficacy may be compromised
Solution Approach 1:
The concentration of the toxicity control agent is optimized within a specific range (0.1-10% w/w) to achieve the desired balance. By adjusting this parameter, the formulation achieves Category III or above toxicity classification while preserving sufficient pesticidal activity. The controlled modification of composition parameters enables simultaneous achievement of safety and efficacy.
Solution Approach 2:
The toxicity control agent serves as a sacrificial component that temporarily interacts with the active ingredients to reduce toxicity, performing its function and then being present in such low concentrations that it does not interfere with the long-term pesticidal action. This allows the system to achieve both safety during handling and sustained efficacy during pest control.
3Object-affected harmful factors
If the composition is formulated as water dispersible granules to minimize user exposure, then toxicity risk is reduced, but the manufacturing complexity increases
Solution Approach 1:
The physical form of the composition is changed from conventional formulations to water dispersible granules. This parameter change achieves dual benefits: it minimizes user exposure by reducing dust inhalation risk and improving safety during application, while the granular form factor itself is a well-established dosage form that can be manufactured using standard pharmaceutical and agrochemical equipment, thereby limiting the increase in manufacturing complexity.
Data Source
AI summary
The invention provides a composition comprising a) Acetamiprid, b) Bifenthrin and c) a toxicity control agent. The invention also provides a method for preparing the composition as well as a method for controlling insects and acarids using the composition.