Carboxylic acid loaded salt carrier and the method for producing thereof

A solid compound prepared as a powder that exhibits good flowability, the solid compound comprising a following structure,

• a carrier carboxylic acid salt (M2+)1+m(R1COO)2(m+1)−in which
• M2+ is an alkaline earth metal ion or a divalent metal ion selected from the group consisting of iron (Fe), copper (Cu), zinc (Zn), manganese (Mn), tin (Sn), lead (Pb), and nickel (Ni), or a mixture of thereof,
• R1 is an optionally substituted C1-C10-alkyl group, an optionally substituted mono- or polyunsaturated C1-C10-alkyl group, or an optionally substituted aryl group, wherein the substituents are selected from the group consisting of carbonyl group (═O), carboxylic acid group (—COOH), amino group (—NH2), hydroxy group (—OH), halogen, cyano group (—CN), and a mixture thereof, and
• wherein m is 0 to 2,
• a loaded carboxylic acid R2COOH,
• wherein R2 is an optionally substituted C1-C10-alkyl group or an optionally substituted mono- or polyunsaturated C1-C10-alkyl group, wherein the substituents, if present, are selected from the group consisting of carbonyl group (═O), carboxylic acid group (COOH), amino group (—NH2), hydroxy group (—OH), halogen or cyano group (CN) or a mixture thereof, and
• wherein 2≤n≤10;
• wherein
• a pKa1 of a corresponding carboxylic acid of the carrier carboxylic acid (R1COO)(m+1)−≤pKa1 of the loaded carboxylic acid(s) R2COOH,
• wherein the loaded carboxylic acid(s) R2COOH is physisorbed within a structure of the carrier carboxylic acid salt (M2+)1+m(R1COO)2(m+1)−,
• wherein a water content of the solid compound is less than 2 equivalents of water relative to the carrier carboxylic acid salt;
• wherein (R1COO)(m+1)− comprises a carrier carboxylic acid selected from the group consisting of formate, acetate, glycolate, propionate, butyrate, succinate, fumarate, maleate, adipate, malate, malonate, tartrate, aspartate, glutamate, benzoate, salicylate, and ascorbate.