Butyl alcohols (/ˈbjuːtɪl ˈælkəhɒlz/) are a group of four isomeric alcohols, each with the molecular formula of C4H10O. The different isomers are named based on the position of the -OH group on the butane chain. The primary isomer, n-butanol, has the -OH group on the first carbon atom, while the secondary isomer, sec-butanol, has it on the second, and so on. The spelling of butyl alcohols phonetically reflects the pronunciation of the separate sounds in the word.
Butyl alcohols are a group of organic compounds that consist of a four-carbon chain with a hydroxyl (-OH) functional group attached. There are four different types of butyl alcohols, which are distinguished by the position of the hydroxyl group on the carbon chain: n-butanol, sec-butanol, isobutanol, and tert-butanol.
N-butanol, also known as 1-butanol, is the primary butyl alcohol and has a straight carbon chain with the hydroxyl group at the end. It is commonly used as a solvent in various industries and as an intermediate in the production of chemicals.
Sec-butanol, short for secondary butanol, has the hydroxyl group attached to the second carbon atom in the chain. It is primarily used in the manufacturing of plastics and resins.
Isobutanol, also called 2-methyl-1-propanol, has a branched carbon chain with the hydroxyl group attached to the second carbon atom. It finds applications as a solvent, fuel additive, and in the production of various chemicals.
Tert-butanol, also known as tert-butyl alcohol or 2-methyl-2-propanol, has a branched carbon chain with the hydroxyl group attached to a tertiary carbon atom. It is mainly utilized as a solvent and as a raw material in the synthesis of pharmaceuticals and organic compounds.
Butyl alcohols possess similar physical and chemical properties, including a slightly sweet odor and the ability to mix well with water and organic solvents. They are flammable liquids and can cause irritation to the eyes, skin, and respiratory system upon exposure.
The word "butyl" comes from the prefix "but-" which is derived from the Greek word "bous" meaning "ox" or "cow". It refers to the number four, as butyl compounds have four carbon atoms in their molecular structure.
The term "alcohol" is derived from the Arabic word "al-kuhl", which originally referred to a fine powder used as an eyeliner. It later evolved to refer to "any fine powder", and eventually came to represent the group of chemical compounds known as alcohols.
Therefore, "butyl alcohols" are named based on the number of carbon atoms in their structure (four) and their classification as alcohols.