Carbolineum
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Carbolineum is an oily, water-insoluble, inflammable, dark brown mixture from coal tar components, smelling of tar. It contains among other things anthracene and phenol.
Because of its rot-resisting and disinfecting effect, Carbolineum was used over many years for the preservation of railroad ties, telephone poles, cabins, etc.
More recently, its use has been limited and/or forbidden by the introduction of stricter environmental regulations.