Wood vinegar, also known as pyroligneous acid or wood tar oil, is a liquid byproduct produced during the process of carbonizing or pyrolyzing wood. This process involves heating wood in the absence of air, which leads to the decomposition of the organic compounds in the wood, resulting in the formation of various products, including wood vinegar. Wood vinegar is a complex mixture of organic compounds, including acetic acid, methanol, acetone, and various phenolic compounds. It has a smoky odor and is typically brownish-black in color. Historically, wood vinegar has been used for various purposes, including as a preservative, insect repellent, and in traditional medicine.
