O 2,2′-oxibisetanol, também conhecido como dietilenoglicol, é um líquido incolor, viscoso e higroscópico, com odor suave e ponto de ebulição elevado (aproximadamente 245 °C), sendo miscível com água e diversos solventes orgânicos. Trata-se de um diálcool alifático bifuncional, classificado quimicamente como um glicol etilênico, derivado da condensação de duas moléculas de etilenoglicol. É amplamente empregado como intermediário químico na síntese de resinas poliéster insaturadas, plásticos, aditivos para combustíveis e agentes solubilizantes em formulações industriais. Suas principais aplicações concentram-se nos setores de revestimentos, tintas e vernizes, polímeros de engenharia, além de aditivos para lubrificantes e fluidos hidráulicos. Também desempenha papel relevante na produção de éteres e ésteres funcionais utilizados em sistemas de liberação controlada em formulações agroquímicas e cosméticas.
Humectant for tobacco, casein, synthetic sponges, paper products, in cork compositions, book-binding adhesives.
Diethylene glycol is a clear colorless, odorless and stable oily liquid. It is also slightly viscous, noncorrosive and nonvolatile. Because of its ether and alcohol group, diethylene glycol exhibits chemical properties characteristic of both primary alcohols and ethers. Its boiling point is considerably higher than that of ethylene glycol, and its solvent is greater. Diethylene glycol is miscible with water, ethers, lower aliphatic alcohols, aldehydes and ketones and is partially soluble in benzene, carbon tetrachloride, monobenzene, orthodichlorobenzene and toluene. It dissolves many dyes, resins, oils, nitrocellulose and many organic substances. Because of its solvent power, low volatility and hygroscopicity, it is used in textile lubricants, cutting oils, dry cleaning soap, printing inks, steam-set inks, and nongrain wood stains. In the textile industry diethylene glycol is used as a conditioning agent for wool, rayon, and cotton. As a solvent for dyes it makes a valuable assistant in dyeing and printing. The high hygroscopicity of diethylene glycol makes it an efficient softening agent for tobacco, paper, synthetic sponges, glues and casein. Diethylene glycol is especially useful in the dehydration of natural gas. A mixture of diethylene glycol and monoethanolamine will remove moisture, hydrogen sulfide and carbon dioxide from natural gas.
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