Cyclopentane

High-quality cyclopentane for your business

Looking for a reliable cyclopentane supplier for industrial manufacturing? Nedstar provides sourcing solutions for high-quality cyclopentane used in polyurethane (PU) foam, polyisocyanurate (PIR) insulation, refrigeration equipment, chemical processing, and other industrial applications.

Cyclopentane is a low global warming potential (GWP) blowing agent that supports the manufacture of high-performance insulation materials. With zero ozone depletion potential, it provides an alternative to certain fluorinated blowing agents in applications where the required safety and processing controls are in place.

Whether you need cyclopentane in bulk for insulation panels, refrigerator production or chemical synthesis, Nedstar helps you identify suitable grades, technical specifications, and delivery arrangements. Bio-based cyclopentane options can also be explored for manufacturers seeking renewable raw materials.

What is cyclopentane?

Cyclopentane is a highly flammable, colourless alicyclic hydrocarbon with the molecular formula C₅H₁₀ and a molecular weight of approximately 70.13 g/mol. It is a saturated cyclic compound consisting of five carbon atoms arranged in a ring, each bonded to hydrogen atoms.

Unlike straight-chain pentane, cyclopentane has a closed-ring molecular structure. Its carbon-carbon-carbon bond angles are generally smaller than the ideal tetrahedral angle of 109.47°, contributing to a degree of ring strain. However, cyclopentane is more stable than smaller cycloalkanes such as cyclopropane.

The molecule adopts non-planar envelope and half-chair conformations rather than remaining in a single plane. These structures undergo rapid interconversion through pseudorotation, helping reduce torsional strain within the five-membered ring.

Cyclopentane is a volatile liquid with a boiling point of approximately 49°C, a melting point near −94°C and a density of approximately 0.75 g/cm³ at ambient temperature. It is practically insoluble in water but soluble in various organic solvents, including alcohols and benzene, which may be present in industrial formulations.

Its volatility, low thermal conductivity in the gas phase and chemical characteristics make it particularly valuable as a blowing agent in rigid insulation foams.

Cyclopentane REACH compliance and regulatory documentation

For manufacturers sourcing cyclopentane in Europe, REACH compliance is an important part of chemical procurement and supply chain management.

Under the EU Registration, Evaluation, Authorisation, and Restriction of Chemicals (REACH) Regulation, applicable obligations depend on the manufacturer's or importer's role, substance registration status, annual tonnage, and intended uses.

Cyclopentane (CAS 287-92-3; EC 206-016-6) is a registered substance under REACH. However, registration status alone does not establish that every supplier or shipment fulfils all relevant obligations.

Nedstar helps customers obtain applicable regulatory documentation, including safety data sheets (SDS), technical specifications, and relevant supply chain information.

Manufacturers should also assess their obligations in accordance with the Classification, Labelling and Packaging (CLP) Regulation, particularly because cyclopentane is a highly flammable liquid whose vapours can form explosive mixtures with air.

For customers exploring bio-based cyclopentane, renewable origin and sustainability certification should be verified separately from REACH compliance.

Contact our specialists to discuss cyclopentane specifications, regulatory documentation, and sourcing requirements.