<unk>  <unk> , is a mixture of three isomeric organophosphate compounds most notably used as a fire retardant and in manufacturing for lacquers and varnishes as a plasticizer. Pure<unk>  is a colorless, viscous liquid, although commercial samples are typically yellow. It is virtually insoluble in water, but easily soluble in organic solvents like toluene, hexane, and diethylether among others. It was synthesized by Alexander Williamson in 1854 upon reacting phosphorus pentachloride with cresol (a mixture of para-, ortho-, and meta- isomers of methylphenol), though today's manufacturers can prepare<unk>  by mixing cresol with phosphorus oxychloride or phosphoric acid as well.<unk> , especially the all-ortho isomer, is the causative agent in a number of acute poisonings. Its chronic toxicity is also of concern. The ortho-isomer is rarely used on its own due to its extremely toxic nature outside of laboratory studies that require isomeric purity, and is generally excluded from commercial products where<unk>  is involved.
Tricresyl phosphate
Disufenton sodium
Dotinurad
Selenium disulfide
Diatrizoate
Aluminum chloride hexahydrate
Ferric maltol
Sodium oxybate