In Volatile Chemistry, volatility expresses the ability of a substance to vaporize. The term applies above all to liquids, but it can also relate to solids capable of passing directly to the vapour state, without passing through a liquid phase.
Some solvents, such as acetone or ether, are particularly volatile.
The volatile organic compounds (VOCs) are substances which contain carbon and which are volatile at room temperature. They can have health effects.
The Origins of Volatility in Chemistry
On a macroscopic scale, the volatility of a substance depends on the pressure and temperature to which it is subjected.
On a microscopic scale, the volatility of a substance reflects the strength of the bonds that exist between its molecules. Thus, in a volatile liquid, the molecules have no difficulty in escaping. This is the case, for example, with pure aromatic molecules. In solution, their volatility becomes dependent on the solvent.
To limit this volatility, it is possible to put them in the presence of heavier molecules. Making a molecule with a large mass volatile indeed requires much more energy than when the molecule is light.
The Volatility of Fuels
When it comes to fuel, volatility is an important quality parameter. Gasoline with high volatility evaporates quite quickly when the outside temperature rises.
It can be the cause of steam jams and cause the engine to stall. In winter, the reverse is true, and gasoline must be more volatile to facilitate starting a cold engine. The volatility of gasoline must therefore be adapted to the season.
Organic volatile substances are a group of various liquid and gaseous substances that cause human health and air pollution. Organic volatiles is detected by “VOC measurement”.
What is Organic Volatile Compounds (VOC) Measurement?
Organic volatile (Voc) measurement; It is the general name of the measurement made to determine the concentration of organic volatile compounds in the air in the workplace environment.
Organic Volatile Compounds are hydrocarbons in aliphatic or aromatic structure, with a boiling temperature up to 250ºC and causing air pollution by atmospheric photochemical reaction.
When these substances are inhaled with air, they cause many hereditary health diseases. To prevent health problems that may occur due to inhalation of volatile substances, VOC measurements following the standards in the OHS regulation must be made by companies at regular intervals.
With the latest regulation in our country, a regulation has been made within the health rules in the production of products such as adhesives, erasers, notebooks, play dough’s, and writing corrector liquids, which are also used in education and training.
