Cyclopentane/n-Pentane Blend 50/50 for PU Rigid Foam

Technical product logo featuring a chemical equation with a cyclopentane ring and linear n-pentane structure above a dark blue gear badge labeled "CP50" and text reading "Pentane Blend 50/50 Cyclopentane/n-Pentane 50-50%".

Cyclopentane/n-Pentane Blend 50/50 for PU Rigid Foam

Cyclopentane/n-Pentane Blend 50/50 is a blend with a nominal composition of 50 wt% cyclopentane and 50 wt% n-pentane. The specified content of each component is 47–53 wt% (50 ± 3 wt%). Detailed product specifications are listed below.

Main Uses: PU rigid foam blowing agent.
Group 2 of 3 — Cyclopentane & n-Pentane Blends (see full three-group Pentane Blends Ratio Table for n-Pentane/Isopentane and Cyclopentane/Isopentane blends)

Components Specifications
F1 F2 F3 F4 F5 F6 F7 F8 F9
cC5
(Cyclopentane) %		 10 20 30 40 50 60 70 80 90
nC5
(n-Pentane)%		 90 80 70 60 50 40 30 20 10
Note: adjustment range for cC5 and nC5 content: ± 2%

Composition note: The nominal cyclopentane/n-pentane blend ratio is 50/50 by weight. The specified content range is 47–53 wt% for cyclopentane and 47–53 wt% for n-pentane (50 ± 3 wt% for each component). Actual batch composition and measured density are reported in the Certificate of Analysis (COA).

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Description

Cyclopentane 50% / n-Pentane 50% blend — a physical blowing agent for polyurethane (PU) rigid foam, positioned as the balanced-performance grade in the Cyclopentane & n-Pentane Blends series.

Applications

  • Commercial refrigeration and cold chain equipment insulation
  • Continuous and discontinuous PU rigid foam insulation panels
  • Cold storage units and insulated transport containers
  • General-purpose replacement for HCFC/HFC blowing agents under Montreal Protocol phase-out programs

Technical Specifications (Cyclopentane/n-Pentane Blend 50/50)

Item Unit Specification Test Method
Cyclopentane (cC5) wt% 47 – 53 GC
n-Pentane (nC5) wt% 47 – 53 GC
Sulfur mg/kg ≤ 5 –
Water mg/kg ≤ 50 –
C1–C4 light components wt% ≤ 1.5 GC
C6+ heavy components wt% ≤ 1.5 GC
Density (20°C) g/cm³ Measured value (per batch COA) –
Benzene wt% ≤ 0.01 GC

Note: the final specification shall be subject to the factory test result and Certificate of Analysis (COA).

Specifications

  • Composition (by weight): Cyclopentane 47–53 wt%; n-Pentane 47–53 wt%.

  • CAS No.: Cyclopentane 287-92-3; n-Pentane 109-66-0

  • Appearance: Colorless, transparent liquid

  • Density: Measured value, reported in the batch Certificate of Analysis (COA).

  • Sulfur: ≤ 5 mg/kg

  • Water: ≤ 50 mg/kg

  • C1–C4 light components: ≤ 1.5 wt%

  • C6+ heavy components: ≤ 1.5 wt%

  • Benzene: ≤ 0.01 wt%

  • Flash Point: Subject to batch COA (Flammable Liquid, PG II)

  • Vapour Pressure (20°C): Subject to batch COA

Transport & Regulatory

  • UN Number: UN 1265 (Pentanes, liquid)
  • Hazard Class: Class 3 Flammable Liquid, Packing Group II
  • Packaging: ISO Tank

Safety Data Sheet (SDS) & COA

Full hazard statements, handling, and storage guidance are provided in the Safety Data Sheet (SDS), available on request along with the batch-specific Certificate of Analysis.

Note: the final specification shall be subject to the factory test result and Certificate of Analysis (COA).

This blend is one of the Cyclopentane/n-Pentane blends offered across the PU rigid foam blowing agent range — see the Blowing Agents category for the complete series.

Documents

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