Ethylbenzene is a chemical compound commonly used as a solvent for various industrial purposes. Its name is spelled as /ˌɛθɪlˈbɛnzin/ in IPA phonetic transcription, reflecting the pronunciation of its constituent parts. The first syllable is pronounced as "eth" with a short e sound followed by a voiced th, while the second syllable is pronounced as "il" with a short i sound. The final syllable, "benzene," is pronounced with a short e sound followed by a voiced z sound and a long e sound.
Ethylbenzene is a colorless liquid hydrocarbon compound with the chemical formula C8H10. It is classified as an aromatic compound due to the presence of a benzene ring in its structure. Ethylbenzene is primarily used as a solvent and chemical intermediate in various industrial processes.
In terms of its physical properties, ethylbenzene has a sweet, aromatic odor and a relatively high boiling point of 136 degrees Celsius. It is insoluble in water but miscible with many organic solvents.
Ethylbenzene is commonly found in fossil fuels such as petroleum and coal, where it occurs naturally. It is also produced synthetically by the alkylation of benzene with ethylene. This process involves the introduction of an ethyl group (-CH2CH3) to the benzene ring, resulting in the formation of ethylbenzene.
The main applications of ethylbenzene include its use as a solvent in various industrial processes, such as producing paints, coatings, varnishes, adhesives, and rubber. It is also utilized as an intermediate compound in the production of styrene, which is further processed to manufacture plastics, synthetic rubber, and other materials.
While ethylbenzene is widely used in industry, it is important to handle and store it with caution as it is flammable and potentially harmful if swallowed, inhaled, or absorbed through the skin. Exposure to high concentrations of ethylbenzene can lead to respiratory and neurological effects, making proper safety measures necessary when working with or around this compound.
The word "ethylbenzene" is derived from its chemical structure and nomenclature. It consists of two main components: "ethyl" and "benzene".
1. Ethyl: The term "ethyl" is derived from the Greek word “ethylos,” meaning "wine" or "intoxicating". In chemistry, "ethyl" is commonly used to describe a two-carbon chain (–CH2CH3) derived from ethanol. It is often added as a prefix to indicate the presence of this two-carbon chain in a chemical compound.
2. Benzene: "Benzene" is derived from the German word "benzoin", which refers to a fragrant resin extracted from the tree Styrax benzoin. It was first isolated from coal tar in the early 19th century by Michael Faraday and later structurally elucidated by August Kekulé.