Wood tar

Wood tar is a viscous, dark liquid derived from the pyrolysis of wood. It has been used for centuries in various applications, including as a preservative for wood, a component in medicines, and a flavoring in foods and beverages.

History

The use of wood tar dates back to prehistoric times, when it was used as an adhesive and waterproofing agent. In the Middle Ages, it was commonly used in shipbuilding to seal and protect wooden vessels from the elements. In the 19th century, wood tar was used in the production of soap and creosote, a wood preservative and disinfectant.

Production

Wood tar is produced through the process of destructive distillation, where wood is heated in the absence of oxygen to break down its components. The resulting liquid is then collected and purified to produce wood tar. The type of wood used can affect the properties of the resulting tar. For example, pine tar is known for its strong, distinctive smell and is often used in traditional medicines and soaps.

Uses

Wood tar has a variety of uses, both historically and in modern times. It is used as a preservative for wood, particularly in marine applications where it provides a waterproof coating and protects against rot. It is also used in the production of certain types of soap, and as a flavoring in foods and beverages such as liquorice and root beer.

In medicine, wood tar has been used as a treatment for skin conditions such as psoriasis and eczema. It is also used in veterinary medicine to treat skin conditions in animals.

Health and Safety

While wood tar has many uses, it is also associated with certain health risks. Prolonged exposure can cause skin irritation and respiratory problems. Ingestion can lead to stomach upset and other digestive issues. As with any substance, it should be used with caution and under the guidance of a qualified professional.

See Also

• Coal tar
• Tar
• Pine tar
• Creosote