Solvent is referred to as a solvent in chemical science. The solvent is used to dissolve the substances and to form a solution. Substances are known in nature as solid, liquid and gaseous form.

Solvent-forming solvents are present in liquid or gaseous form according to the properties of the substances to be dissolved. Water is the most known solvent in nature. Water is an organic solvent. The solvents may be organic or synthetic. Today, synthetic solvents are used in a wide area.

Solvents have low boiling points. Therefore, they evaporate very quickly under normal conditions. Some of the most commonly used solvents in modern industry are prohibited because they cause harm to humans and nature. However, not all solvents are harmful. Solvents are used in paints, cleaning, perfume making and many other areas and are highly preferred for their functionality. Synthetically produced solvents are now more functional for businesses.

Nevertheless, the use of harmful synthetic solvents is prohibited in many sectors, including textile products, in the world and in our country, since their damages create danger for all living things.

In order to determine the solvent values ​​of fabrics against the risks of solvents used in textile products, solvent fastness is determined in accordance with the following standard:

• TS 7579 EN ISO 105-X05 Textiles - Color fastness tests - Part X05: Determination of color fastness to organic solvents

Synthetic solvents are known to have more carcinogenic effects. To date, unfortunately it has been used unconsciously by businesses. In parallel with the development of science and technology, these damages arise. Solvents are chemicals that enter chemical reactions very quickly. When they evaporate into the air, they leave behind a dissolved substance. During evaporation, toxic gases are emitted. Determination of solvent fastness is therefore important.