Solvent
A solvent is a liquid that dissolves solid, liquid or gas solutes, and then becomes a solution. The most common solvent in daily life is water. And the so-called organic solvent is an organic compound containing carbon atoms. Solvents usually have a relatively low boiling point and are easily volatile. Or may be removed by distillation, leaving the solubles. Therefore, the solvent can not react chemically to the solute. They must be low active. Solvents can be extracted from the mixture of soluble compounds, the most common example is the hot coffee brewing coffee or tea. Solvents are usually transparent, colorless liquids, and most of them have a unique smell. The concentration of the solution depends on how much of the substance is dissolved in the solvent. Solubility is the solvent at a specific temperature, can dissolve up to the number of substances. The organic solvent is mainly used for dry cleaning (for example, tetrachlorethylene), as a paint thinner (such as toluene `banana water` rosin water turpentine), for washing water or removing glue (eg acetone, methyl acetate, ethyl acetate) Rust (eg hexane), used as a detergent (lemon), used for perfume (alcohol) for chemical synthesis. ...