Fenpyrazamine Suspension pH Control for Odor Suppression
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Solution Overview
Problem
Conventional fenpyrazamine-containing agrochemical compositions often emit an unpleasant odor during storage or transportation, especially at high temperatures, which can lead to quality degradation and user dissatisfaction.
Innovation Solution
An aqueous suspension agrochemical composition comprising fenpyrazamine and an acid component, with a pH range of 2.5 to 6.5, preferably using phosphoric acid, hydrochloric acid, or sulfuric acid, and optionally including procymidone and polyoxyalkylene aryl phenyl ether phosphoric acid ester salt, to prevent odor emission and ensure storage stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional fenpyrazamine-containing agrochemical compositions are stored or transported under high temperature, then the agrochemical remains stable, but odor is emitted
Solution Approach 1:
The patent adjusts the pH parameter of the aqueous suspension composition to a specific range (pH 3.0-6.5, preferably pH 4.0-5.5) to suppress odor emission. This parameter change modifies the chemical environment to prevent odor-causing reactions while maintaining storage stability of fenpyrazamine.
Solution Approach 2:
The patent introduces an acid component as an intermediary substance to control the pH of the composition. This intermediary agent mediates between the fenpyrazamine and the aqueous environment, preventing direct reactions that cause odor while maintaining overall stability.
2Object-generated harmful factors
If the pH is adjusted to suppress odor, then odor emission is reduced, but storage stability may be compromised
Solution Approach 1:
The patent identifies and implements an optimal pH range (pH 3.0-6.5, preferably pH 4.0-5.5) that simultaneously achieves odor suppression and maintains storage stability. This precise parameter optimization resolves the contradiction by finding the sweet spot where both requirements are satisfied.
Solution Approach 2:
The patent employs sensory evaluation and measurement methods to monitor odor and stability, using this feedback to refine and confirm the optimal pH range. This feedback mechanism ensures that the pH adjustment achieves odor suppression without compromising storage stability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The composition effectively suppresses odor emission and maintains excellent storage stability, ensuring the quality and usability of fenpyrazamine throughout its storage life.
Implementation Method 1
the present composition has a pH at 25°C in the range of 2.5 to 6.5
Data Source
AI summary
An aqueous suspension agrochemical composition comprising fenpyrazamine and an acid component, and having no problem of emission of odor and having excellent storage stability, wherein the composition has a pH at 25°C in the range of 2.5 to 6.5, is provided.