Diethylene glycol, also known as diethylene glycol, is a colorless and transparent liquid containing no mechanical impurities. Mainly used as solvent, plasticizer of resin, anti-desiccant of tobacco, fiber lubricant and desiccant of natural gas.

Molecular structure data:

1, molar refractive index: 25.39

2. Molar volume (cc/mol): 95.9

3. Isotonic specific volume (90.2 k): 244.4

4. Surface tension (dyne/cm): 42. 1.

5. Polarity (10-24cm3): 10.06.

Extended data:

I. Properties and stability

1, avoid contact with oxides and moist moisture.

2. Colorless, odorless, transparent and hygroscopic viscous liquid. It has a pungent sweetness. Its solubility is similar to ethylene glycol, but it has strong solubility in hydrocarbons. Diethylene glycol can be mixed with water, ethanol, ethylene glycol, acetone, chloroform, furfural and so on.

Immiscible with ether, carbon tetrachloride, carbon disulfide, linear aliphatic hydrocarbon, aromatic hydrocarbon, etc. Rosin, shellac, cellulose acetate and most oils are insoluble in diethylene glycol, but can dissolve nitrocellulose, alkyd resin, polyester resin, polyurethane and most dyes. Flammable, low toxicity. It has the general chemical properties of alcohol and ether.

3. It exists in tobacco leaves and smoke.

4. Symptoms after ingestion are similar to those of ethylene glycol. Please refer to ethylene glycol. Used as an elixir of life, it has a fatal toxic effect.

Second, the use

1, mainly used as gas dehydrating agent and aromatic extraction solvent. It is also used as a solvent for nitrocellulose, resin, grease, printing ink and so on. Softening agent and finishing agent for textiles, and extraction of coumarone and indene from coal tar.

In addition, diethylene glycol is also used as brake oil compounding agent, celluloid softener, antifreeze and diluent in emulsion polymerization. Also used as plasticizer for rubber and resin; Polyester resin; Glass fiber; Polyurethane foam; Production of lubricating oil viscosity improver and other products. Used to synthesize unsaturated polyester resin and so on.

2. Used to synthesize unsaturated polyester resin, plasticizer, etc. It is also used as antifreeze, gas dehydrating agent, plasticizer, solvent, aromatic hydrocarbon extractant, cigarette hygroscopic agent, textile lubricant and finishing agent, paste and anti-drying agent of various adhesives, and hygroscopic cosolvent of vat dyes. It is a common solvent for oil, resin and nitrocellulose.

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