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What Is 1,6-hexanediol?

Views: 295     Author: Vickey     Publish Time: 2023-07-11      Origin: Site

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What Is 1,6-hexanediol?

The chemical compound 1,6-hexanediol has the formula (CH2CH2CH2OH). It is transparent and soluble in water solid.The glycol family of chemical compounds, which includes 1,6-hexanediol (1,6-HD), is noted for its adaptable qualities. It appears as a liquid that is transparent, colorless, and moveable and has a pleasantly sweet smell. Many businesses, notably the food and cosmetics industries, use 1,6-hexanediol as a solvent. Additionally, it is essential in the manufacturing of polymers, polyols, and polyurethanes as a stabilizer and preservative.

Production

1,6-Hexanediol is created by the catalytic reduction of 2,4-diynyl-1,6-diol or diethyl or dimethyl hexaate in the presence of sodium metal, ethanol, or lead-chromium oxide. such as diethyl acetic acid's reduction of hydrogen.The reaction temperature is 255°C, the reaction catalyst is copper chromate, the hydrogen pressure is 3.79–20.68 MPa, and the yield is between 85% and 90%. Although this approach is unworkable on a commercial scale, reducing adipates with lithium aluminum hydride might be used to accomplish laboratory preparation.

Properties

Since 1,6-hexanediol has a hydroxyl group, it may go through alcohol-specific chemical processes such as dehydration, substitution, and esterification.

Oxepane, 2-methyltetrahydropyran, and 2-ethyltetrahydrofuran are produced after the dehydration of 1,6-hexanediol. 1,6-hexanediol may be used to create the corresponding thiophene and pyrrolidone by reacting with hydrogen sulfide and ammonia, respectively.

Uses

Polyurethane, unsaturated polyester, plasticizer, adhesive hardening agent, thermal and dependable qualitative modification of lubricating oil, etc. are all produced using 1,6-hexanediol.It also used in the production of pesticide pyrethroids, organic peroxides, circular musk, polyethylene plastic cross-linker and polyether rubber.

1)Polyurethane field: Polyurethane with a high elastic body is widely employed in synthetic rubber, elastic fiber, synthetic leather, and other sectors is polyurethane with a high elastic body.Polyester resin can be treated with 1,6-hexadiol to create a high-elastic polyurethane body. The mechanical strength, heat resistance, oxidation resistance, and water resistance of the modified resin are all extremely good.

2)Polester field: Since 1,6-hexadiol unsaturated polyester has a longer carbon chain than other short-chain unsaturated polyesters and is softer, it can increase resin's alkaline resistance and its ability to adhere to glass fiber. 1,6-hexadiol and 4,4-phthalate-diphenylsulfonic acid are saturated polyesters with good tensile strength and flexibility. Excellent ventilation and solvent resistance, particularly appropriate for photography bases. Additionally, 1,6-hexadiol and terephthalic acid's polyester are appropriate for treating polyester fibers.

3) Synthetic resin additives: In comparison to low molecular weight plasticizers, 1,6-hexadiol plasticizer has outstanding qualities such as volatile resistance, oil spray frost resistance, migration resistance, and low temperature resistance and can be widely utilized in plastics, rubber, epoxy resin, and other materials.

Safety

1,6-Hexanediol is often regarded as safe due to its low toxicity and low flammability. Although it does not irritate the skin, it might irritate the mucous membranes or the respiratory tract. The compound's dust or vapor might irritate or harm the eyes.

Storage procedures

Store 1,6-hexanediol in a closed container and keep it in a cold, dry area. Storage locations must be free of oxidizing, reducing, acid chloride, anhydride, and chloroformate substances.

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