1,4-Dioxane is an organic compound with the molecular formula C4H8O2. It is a colorless transparent liquid, miscible with water, slightly fragrant, and sensitive to light. Density 1.0329, refractive index 1.4175. Miscible with water and many organic solvents. Made by distillation and dehydration of ethylene glycol and concentrated sulfuric acid. Mainly used as a solvent for nitrocellulose, celluloid, cellulose resin, vegetable oil, mineral oil, and oil-soluble dyes, as well as in the manufacturing of spray paint, varnish, plasticizer, wetting agent, polishing agent, paint remover, spice, preservative, fumigation disinfectant, deodorant, and medical supplies.
Melting point: 12 ℃
Boiling point: 101 ℃
Flash point: 12 ℃ (CC)
Critical temperature: 312 ℃
Critical pressure: 5.14MPa
Ignition temperature (℃): 180
Explosion limit (V): 1.7-25.2%
Relative density (water=1): 1.04
The use of 1,4-dioxane:
Mainly used as a solvent for nitrocellulose, celluloid, cellulose resin, vegetable oil, mineral oil, and oil-soluble dyes, as well as in the manufacturing of spray paint, varnish, plasticizer, wetting agent, polishing agent, paint remover, spice, preservative, fumigation disinfectant, deodorant, and medical supplies.
Main purpose:
This product is used as a solvent, reaction medium, and extractant in the manufacturing of special fine chemicals such as pharmaceuticals, cosmetics, spices, and scientific research. In Japan, this product is mainly used as a stabilizer for 1,1,1-trichloroethane, with an added amount of 2.5-4%; Secondly, it is widely used as a reaction solvent for polyurethane synthetic leather, amino acid synthetic leather, etc. This product has strong solubility, similar to dimethylformamide and stronger than tetrahydrofuran. 1,4-dioxane has the following important uses:
- It forms a coordination compound with sulfur trioxide and can be used as a sulfating agent in the synthesis of many compounds;
- Used for the extraction of pharmaceuticals and pesticides, as well as the dewaxing of petroleum products;
- Used as a dispersant for dyes, wood colorants, and solvents for oil soluble dyes;
- Used as a high-purity metal surface treatment agent, etc
