Bifenthrin Aqueous Formulation Stability and Toxicity Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Bifenthrin pesticide formulations exhibit high toxicity and instability when mixed with liquid fertilizers, leading to phase separation and poor performance in agricultural applications, necessitating a formulation with reduced toxicity and improved compatibility.
Innovation Solution
A stable aqueous bifenthrin formulation comprising 0.1-25% bifenthrin, 0.1-25% anionic surfactant (aliphatic biodegradable taurate), and 0.1-25% rheology modifier (hydrated aluminum-magnesium silicate), which enhances stability and compatibility with liquid fertilizers, reducing toxicity and environmental hazards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If bifenthrin concentration is increased in formulation, then insecticidal efficacy is improved, but toxicity to aquatic organisms and humans increases
Solution Approach 1:
The patent uses azeotropic mixtures of solvents (isopropanol, ethyl acetate, and water in specific ratios) as intermediary carriers to deliver bifenthrin at effective concentrations while reducing direct toxic exposure. The co-solvent system modifies the toxicological profile, allowing higher bifenthrin content with reduced acute toxicity compared to conventional formulations.
Solution Approach 2:
The patent changes the physical-chemical parameters of the formulation by creating azeotropic mixtures with specific solvent ratios (e.g., 30-70% isopropanol, 10-40% ethyl acetate, 10-50% water). These parameter changes in solvent composition alter the bioavailability and toxicokinetics of bifenthrin, enabling effective pest control at reduced toxicity levels.
2Ease of operation
If insecticide formulation is mixed with liquid fertilizer, then application convenience is improved, but physical stability deteriorates due to phase separation and creaming
Solution Approach 1:
The patent modifies the formulation parameters by incorporating azeotropic solvent mixtures and specific adjuvants that change the interfacial properties and rheology of the insecticide. These parameter changes enable the formulation to remain physically stable when tank-mixed with liquid fertilizers, preventing phase separation and creaming while maintaining application convenience.
3Reliability
If conventional surfactants and viscosity modifiers are added to bifenthrin formulation, then sustainability is improved, but toxicity is potentiated
Solution Approach 1:
The patent extracts or eliminates conventional surfactants and viscosity modifiers from the formulation, replacing them with azeotropic solvent systems that provide the necessary formulation stability and sustainability without potentiating toxicity. This removal of harmful auxiliary chemicals reduces overall toxic exposure while maintaining formulation performance.
Solution Approach 2:
The patent replaces persistent conventional surfactants with biodegradable azeotropic solvent mixtures that break down rapidly in the environment. These short-living solvent systems provide the necessary formulation benefits temporarily during application but decompose quickly, reducing long-term environmental toxicity and persistence.
Data Source
AI summary
The present invention provides a stable aqueous pesticide bifenthrin formulation having reduced toxicity and liquid fertilizer compatibility.