tjäror
Tjäror is a term that generally refers to viscous, dark, and sticky substances that are byproducts of the destructive distillation of organic materials, most commonly wood or coal. These substances are complex mixtures of hydrocarbons and other organic compounds, with their exact composition varying significantly depending on the source material and the processing conditions. Historically, tar has been a valuable commodity, used for its waterproofing and preservative properties.
Wood tar, often referred to as Stockholm tar, was historically produced by heating wood in the absence
The industrial importance of coal tar has led to the development of sophisticated processes for its fractional