羧酸鹽的結構通式為R-COO-M，R表示烴基，M表示陽離子(絕大部分為金屬離子，也有銨根離子)。羧酸鹽是由羧酸和堿發(fā)生中和反應得到的，一般對應的羧酸酸性相對于無機強酸酸性較弱，可以向羧酸鹽的溶液中加入稀鹽酸，然后加入乙醇加熱，如果能夠有香味出現(xiàn)，那么說明發(fā)生了酯化反應也就說明了最初的鹽類為羧酸鹽。
Potassium 2,2-dimethyl-1,3-dioxolane-4-carboxylate
Sodium 2-iodoacetate
Sodium 4-methyl-2-oxopentanoate
Sodium 4-nitrobenzoate
Sodium 5-oxo-1-(4-sulfophenyl)-4,5-dihydro-1H-pyrazole-3-carboxylate
Sodium (R)-4-((2-(5-(2-fluoro-3-methoxyphenyl)-3-(2-fluoro-6-(trifluoromethyl)benzyl)-4-methyl-2,6-dioxo-3,6-dihydropyrimidin-1(2H)-yl)-1-phenylethyl)amino)butanoate
Potassium (2R,3R)-3-carboxy-2,3-dihydroxypropanoate
Sodium dodecanoate
(R)-3-Carboxy-2-hydroxy-N,N,N-trimethylpropan-1-aminium (E)-3-carboxyacrylate
Potassium 4-nitro-2-sulfonatobenzoate
Potassium 3-methyl-1,2,4-oxadiazole-5-carboxylate
Potassium 5-methyl-1,2,4-oxadiazole-3-carboxylate
Potassium 2-hydroxy-4-methoxybenzoate
Lithiumacetate
Lithium acetate dihydrate
Lithium isobutyrate
Potassium cinnamate
Potassium 5-methyl-1,3,4-oxadiazole-2-carboxylate
Lithium 9-(((E)-4-((2S,3R,4R,5S)-3,4-dihydroxy-5-(((2S,3S)-3-((2S,3S)-3-hydroxybutan-2-yl)oxiran-2-yl)methyl)tetrahydro-2H-pyran-2-yl)-3-methylbut-2-enoyl)oxy)nonanoate
Calcium (2R,3S)-2,3,4-trihydroxybutanoate
Potassium 5-nitro-2,6-dioxo-1,2,3,6-tetrahydropyrimidine-4-carboxylate hydrate
Magnesium succinate
Sodium malonate hydrate
Sodium 2-chloro-6-fluorobenzoate
Sodium 3-chloro-4-fluorobenzoate
Ammonium oxalate monohydrate
Sodium 2,3,4,5,6-pentafluorobenzoate
Sodium 2-(2-amino-3-(4-bromobenzoyl)phenyl)acetate
Potassium 2-hydroxypropane-1,2,3-tricarboxylate hydrate
Sodium n-Octanoate
