Malonic acid (iupac systematic name: propanedioic acid) is a dicarboxylic acid with structure ch2(cooh)2. The ionised form of malonic acid, as well as its esters and salts, are known as malonates.

Stearic acid (first syllable pronounced either steer or stair) or 18:0 is a saturated fatty acid. It is a waxy solid, and its chemical formula is C18H36O2, or CH3(CH2)16COOH.

Sebacic acid is a dicarboxylic acid with structure (HOOC)(CH2)8(COOH), and is naturally occurring.In its pure state it is a white flake or powdered crystal. The product is described as non-hazardous, though in its powdered form can be prone to flash ignition.

Salicylic acid (from the Latin word for the willow tree, Salix, from whose bark it can be obtained) is a beta hydroxy acid. This colorless crystalline organic acid is widely used in organic synthesis and functions as a plant hormone.

Propionic acid (systematically named propanoic acid) is a naturally-occurring carboxylic acid with chemical formula CH3CH2COOH. It is a clear liquid with a pungent odor.

Propionic acid (systematically named propanoic acid) is a naturally-occurring carboxylic acid with chemical formula CH3CH2COOH. It is a clear liquid with a pungent odor.