Description

Cyclopentane 95% (CAS No. 287-92-3) is an industrial-grade cycloalkane. Specifically, it works mainly as a physical blowing agent in PU rigid foam production. It replaces R11/R141b in refrigerator, freezer, cold storage, water heater, and insulation panel manufacturing, offering the vapor pressure and boiling point profile these processes need.

Because foam blowing depends on physical properties like boiling point and evaporation behavior rather than trace-level purity, this grade delivers reliable performance at a more cost-effective price point — making it the standard choice for bulk-volume PU foam manufacturing. However, for higher-performance PU systems, resins, adhesives, or laboratory use, see Cyclopentane 99%.

Cyclopentane 95%: Technical Specifications

Applications for Cyclopentane 95%

What’s more, because this grade offers the right vapor pressure and boiling point for physical foam blowing, it works reliably as an R11/R141b replacement in rigid PU foam for refrigerators, freezers, cold storage, and insulation panels. Small amounts of related pentane isomers have little effect on foam cell structure, which is why bulk-volume foam manufacturing typically uses this grade over the 99% option. As a result, it remains the standard choice across most PU foam production lines.

Packaging Options

Overall, Cyclopentane 95% offers a practical, cost-effective option for large-scale PU foam manufacturing. Export documentation, including certificates of origin for applicable free trade agreements, is available on request. For additional physical property data, see our PubChem reference entry.