an acidic derivative of a carbohydrate; the active constituent of pectin / (chemistry) a helical polymer of αD-galacturonic acid

(organic chemistry) an aliphatic carboxylic acid, CH₃(CH₂)₇COOH, nonanoic acid, used in the manufacture of plastics, pharmaceuticals etc

(organic chemistry) A colourless, crystalline dicarboxylic acid, (COOH)₂, found in rhubarb, spinach and other plants, often as crystals of the calcium salt.

A clear colourless liquid; a strong acid and a violent, sometimes explosive, oxidizing agent / (chemistry) HClO₄, the oxyacid of chlorine in which chlorine has the highest oxidation number

an polyunsaturated fatty acid, having 18 carbon atoms and two double bonds, essential for human nutrition; it is found in linseed, sunflower and other vegetable oils

(organic chemistry) A class of organic compounds having two acyl groups bonded to the same oxygen atom. They react with water to give carboxylic acids.

(organic chemistry) Any of three isomeric aromatic organic benzenedicarboxylic acids, C₆H₄(COOH)₂; especially the ortho- isomer manufactured from naphthalene, used in the synthesis of dyes, perfumes and other compounds.

(chemistry) a solid white acid, H₂SeO₄, having the same structure and similar reactions as sulphuric acid

(organic chemistry) an aliphatic dicarboxylic acid, (CH₂)₆(COOH)₂, obtained from cork; used in the manufacture of plastics

(chemistry) a strong inorganic acid, HSO₂OH / (chemistry) the univalent functional group -SO₂OH