or turpentine substitute. Mixture of hydrocarbons that separate, at a temperature between 140 and 200 °C, from petroleum through distillation using atmospheric pressure. For its lower cost, it has substituted natural oil of turpentine (see turpentine) in many of its applications. Among the commercialized products, small percentages of other substances are added to hide the odor of the petroleum and to render it more similar to that of turpentine.