Ketone solvents are a large class of life andwidely used in the production of organic compounds, molecular weight is small, it isliquid at room temperature. Organic solvents,including many types of material, such asalkanes, alkenes, alcohols, aldehydes, amines,esters, ethers, ketones, aromatic, hydrogenatedoil, terpenes, halogenated hydrocarbons,heterocyclic compounds, compounds containingnitrogen and sulfur compounds, most humans havea certain toxicity. It exists in the coatings,adhesives, paints and detergents. Often useorganic solvent, such as styrene,perchloroethylene, trichloroethylene, ethyleneglycol and triethanolamine. Organic solvents aresubstances can dissolve some insoluble in water(such as fats, waxes, resins, rubber, dyes, and so on) of a class of organic compounds,characterized it is liquid at room temperatureand pressure, have greater volatility, in theprocess of dissolving, the solute and solventproperties are not changed.