Diethylene glycol, chemical formula C4H10O3, is a colorless, odorless, transparent, hygroscopic viscous liquid with a pungent sweet taste, non-corrosive, and low toxicity.
Nature and stability
1. Avoid contact with oxides and damp moisture.
2. Colorless, odorless, transparent, hygroscopic viscous liquid. It has a spicy sweetness. The solubility is similar to that of ethylene glycol, but the ability to dissolve hydrocarbons is stronger. Diethylene glycol can be miscible with water, ethanol, ethylene glycol, acetone, chloroform, furfural, etc. Immiscible with ether, carbon tetrachloride, carbon disulfide, linear aliphatic hydrocarbons, aromatic hydrocarbons, 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 and low toxicity. It has the general chemical properties of alcohol and ether.
3. Exist in tobacco leaves and smoke.
4. The symptoms after ingestion are similar to ethylene glycol, please refer to ethylene glycol.
Storage method
1. Store in a cool, dry place. Ensure that there are good ventilation facilities in the workplace.
2. Keep away from fire and water sources. Keep away from oxidants.
Use
1. Mainly used as gas dehydrating agent and aromatic extraction solvent. It is also used as a solvent for nitrocellulose, resins, greases, printing inks, etc., as a softener and finishing agent for textiles, as well as for extracting coumarone and indene from coal tar. In addition, diethylene glycol is also used as a brake fluid compounding agent, celluloid softener, antifreeze agent and diluent during emulsion polymerization. It is also used in the production of rubber and resin plasticizers; polyester resins; fiber glass; urethane foam; lubricant viscosity modifiers. Used to synthesize unsaturated polyester resin, etc.
2. Used as synthetic unsaturated polyester resin, plasticizer, etc. It is also used as antifreeze agent, gas dehydrating agent, plasticizer, solvent, aromatic extractant, cigarette hygroscopic agent, textile lubricant and finishing agent, anti-drying agent for paste and various glues, moisture absorption cosolvent for vat dyes, etc. It is a common solvent for grease, resin, nitrocellulose, etc.
Emergency handling methods
1. Leakage emergency treatment
Cut off the fire source. Wear self-contained breathing apparatus and general fire-fighting protective clothing. Stop leaks while ensuring safety. Water spray can reduce evaporation. Mix and absorb with sand or other non-combustible adsorbents. It is then transported to an open place to be buried, evaporated, or incinerated. If there is a large amount of leakage, use the embankment to contain it, and then collect, transfer, recycle or dispose of it after harmless treatment.
2. Protective measures
Respiratory protection: When the concentration in the air is high, you should wear a gas mask. It is recommended to wear self-contained breathing apparatus during emergency rescue or evacuation.
Eye protection: wear chemical safety glasses.
Body protection: wear anti-static overalls.
Hand protection: Wear protective gloves.
Others: Smoking is strictly prohibited at the work site. Avoid long-term repeated contact.
3. First aid measures
Skin contact: Take off contaminated clothing and rinse thoroughly with soap and water.
Eye contact: immediately open the upper and lower eyelids and rinse with running water for 15 minutes. Seek medical attention.
Inhalation: Leave the scene to a place with fresh air. Difficulty breathing. Give oxygen. Once breathing stops, begin CPR immediately. Seek medical attention.
Ingestion: If you take it by mistake, rinse your mouth with water, drink enough warm water, induce vomiting, and seek medical attention immediately.