ISOPENTANE
Isopentane is a small, branched hydrocarbon also known as 2-methylbutane. It is highly volatile: the NIST Chemistry WebBook lists a boiling point close to 28 °C, a physical trait that helps explain its place in fast-release products and pressurised packages.
ISOPENTANE: what it is
Isopentane is a small, branched hydrocarbon also known as 2-methylbutane. It is highly volatile: the NIST Chemistry WebBook lists a boiling point close to 28 °C, a physical trait that helps explain its place in fast-release products and pressurised packages.
It is one structural form of pentane, with five carbon atoms arranged in a branched rather than a straight chain. That detail distinguishes it from n-pentane even though both belong to the same hydrocarbon family. On an ingredient list, the name identifies this particular molecule, not a plant oil or botanical extract.
ISOPENTANE: what it does in cosmetics
In cosmetics, ISOPENTANE can work as a propellant. Inside a pressurised package, it helps push the product outward, which can support sprays, foams, or a light, continuous release depending on the packaging system.
It can also serve as a solvent and viscosity-control aid. In practical terms, this can make a blend more fluid for dispensing or spraying and can influence how quickly the product seems to dry. These are formula-handling roles, not a treatment claim for skin or hair.
ISOPENTANE: conditions and care
Because it is flammable, products containing isopentane should be kept away from flames, sparks, and intense heat. Follow the label warnings, especially for pressurised packages.
Products containing this ingredient
See which products include it and the name used in each composition.
