... 5.Best Service Definition: Wash oil is an important process of coal tar distillation fractions, one of about 6.5-10% coal ... 15°C0Uses:Currently used mainly for cleaning coke oven gas from the benzene or naphthalene.As the separation and extraction ... , used to absorb benzene.In addition, for the preparation of anti-corrosion oil, production of quinoline, indole, dispersants, water reducing agent. Wash ...