CAS RN: 123-91-1

Major Uses

Stabilizer in chlorinated solvents. Organic solvent for cellulose acetate, ethyl cellulose, benzyl cellulose, resins, oils, waxes, oil and spirit-soluble dyes, and many other organic as well as some inorganic compounds.
The largest single use of 1,4-dioxane is the stabilization of 1,1,1-trichloroethane against chemical attack by aluminum.
Historically, 1,4-dioxane has been used as a stabilizer for the solvent 1,1,1-trichloroethane. However, this use is no longer expected to be important due to the 1990 Amendments to the Clean Air Act and the Montreal Protocol, which mandate the eventual phase-out of 1,1,1-trichloroethane production in the U.S.
Dioxane is used as a solvent in the formulation of inks, coatings, and adhesives, and as solvent for extracting animal and vegetable oils. As a chemical intermediate, dioxane reaction products are useful as insecticides, herbicides, plasticizers, and monomers. The oxonium complexes of dioxane with salts, mineral acids, halogens, and sulfur trioxide are used as catalysts and as reagents for anhydrous acid reactions, brominations, and sulfonations. In the laboratory, dioxane is useful as a cryoscopic solvent for molecular mass determinations and as a stable reaction medium for diverse reactions.
Preparation of tissue sections for histology. /Former use/
... As a solvent in spectroscopic and photometric measurements. ... Is reliable only in the absence of oxygen.
Solvent for cellulose acetate, ethyl cellulose, benzyl cellulose, lacquers, plastics, resins, and polyvinyl polymers.
...For measuring optical activity, for cryoscopic determination and in the manufacturing of membrane filters.
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