Pyrolysis oil are affected by temperature, reaction time, algae species, algae concentration, reaction atmosphere, and catalysts, in subcritical water reaction conditions. Bio-oil typically requires significant additional treatment to render it suitable as a refinery feedstock to replace crude oil derived from petroleum, coal-oil, or coal-tar. Tar is a black mixture of hydrocarbons and free carbon obtained from a wide variety of organic materials through destructive distillation. Tar can be produced from coal, wood, petroleum, or peat. Wood-tar creosote is a colourless to yellowish greasy liquid with a smoky odor, produces a sooty flame when burned, and has a burned taste. It is
Wright's Coal Tar Soap Tar Soap section of the business. Readers of the "Country-Side" magazine in 1906 were offered the chance to buy an inexpensive cabinet frame for one shilling, in which they could stack twelve empty Wright's Coal Tar Soap packets to act as sliding drawers in a cabinet for natural history specimens. As the editorial mentioned: ""the measurements have been chosen because so many of our readers are users of Wright's Coal Tar Soap"". Wright's Coal Tar Soap was a regular advertiser in the magazine. By 1909 the company was one of the leading pharmaceutical houses in the country, and in that