Stable ACC HCl Liquid Formulations via pH Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
1-amino-1-cyclopropanecarboxylic acid hydrochloride (ACC HCl) is not stable in solutions with a pH range of 2.7 to 8.5, requiring it to be stored as a solid and dissolved in a liquid carrier for agricultural use, which increases costs and is prone to user errors during preparation.
Innovation Solution
Development of stable liquid agricultural formulations comprising 1-amino-1-cyclopropanecarboxylic acid hydrochloride salt (ACC HCl salt) in aqueous or non-aqueous solutions, with pH ranging from 2.75±0.3 to 8.5±0.3, including concentrations of 5% to 25% w/w ACC HCl salt, surfactants like polyoxyethylene alkyl ether phosphate, and solvents such as water or propylene glycol, to create stable formulations for foliar spray, drench, and seed treatment applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If ACC HCl is stored as a solid, then stability is improved, but ease of operation deteriorates due to required dissolution step
Solution Approach 1:
The patent changes the pH parameter of the solution to create stability. By formulating ACC HCl in aqueous solutions with pH adjusted to 1.0±0.3 using hydrochloric acid, the patent achieves both stability and convenience. This parameter change allows the product to be stored and applied directly without dissolution steps while maintaining stability.
2Ease of operation
If ACC HCl is dissolved in liquid carrier, then ease of operation is improved, but stability deteriorates
Solution Approach 1:
The patent applies parameter changes by controlling pH to 1.0±0.3 and maintaining specific concentration ranges (5-50% w/w ACC HCl salt) to achieve stability in liquid form. This resolves the contradiction by making the liquid formulation stable through precise parameter control.
3Productivity
If ACC HCl is prepared as liquid formulation, then productivity is improved, but manufacturing precision deteriorates due to pH control requirements
Solution Approach 1:
The patent establishes specific parameter ranges (pH 1.0±0.3, concentration 5-50% w/w) that define the manufacturing precision requirements. By setting these clear parameters, the patent enables automated manufacturing processes that can maintain precision efficiently, thus resolving the contradiction between productivity and manufacturing precision.
Data Source
AI summary
The present invention relates to 1-amino-1-cyclopropanecarboxylic acid hydrochloride salt formulations and methods of their use.