Tag PU Foam

The choice of blowing agent

In the insulation industry, the choice of blowing agent plays a decisive role in determining a panel’s thermal efficiency, structural strength, and environmental impact. Among the various options available today, n-Pentane stands out as one of the most efficient, economical, and environmentally friendly blowing agents for producing high-performance insulated panels.

1. Superior Thermal Performance

n-Pentane offers a low thermal conductivity value, allowing manufacturers to achieve excellent insulation performance with reduced material usage. When used in polyurethane (PU) and polyisocyanurate (PIR) foam systems, n-Pentane ensures consistent cell structure and stable insulation properties even under extreme temperature variations. This makes it an ideal choice for building envelopes, cold storage, and refrigerated transport applications.

2. Environmentally Responsible Choice

Compared with traditional CFCs and HCFCs, n-Pentane is a non-ozone-depleting hydrocarbon with zero ODP (Ozone Depletion Potential) and very low GWP (Global Warming Potential). As global regulations increasingly restrict the use of high-GWP materials, n-Pentane provides a sustainable alternative that helps manufacturers comply with environmental standards such as the EU F-Gas Regulation and the Montreal Protocol.

3. Cost Efficiency and Process Compatibility

n-Pentane not only delivers strong insulation performance but also offers significant cost advantages. It is compatible with existing foam production equipment, minimizing the need for plant modification. Its stable supply and competitive pricing make it a preferred choice for large-scale panel manufacturers seeking a balance between performance and cost control.

4. Proven Reliability in Global Applications

Leading insulation panel producers worldwide have adopted n-Pentane as their primary blowing agent. Its proven track record in both continuous and discontinuous panel production lines demonstrates its versatility and reliability. Whether for roof and wall panels, cold storage facilities, or industrial buildings, n-Pentane consistently delivers superior insulation and long-term durability.

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In summary, n-Pentane offers an exceptional balance of performance, environmental responsibility, and cost-effectiveness. As the insulation industry continues its transition toward greener technologies, n-Pentane remains a trusted choice for manufacturers striving for both efficiency and sustainability.

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Further Reading:
For a deeper understanding of how hydrocarbon blowing agents are transforming modern insulation technology, visit the European Association for Foamed Plastic Insulation (EAIPI) — an industry resource offering insights into sustainable materials, energy efficiency, and environmental compliance in foam production.

n-Pentane | Isopentane | Cyclopentane

In today’s global chemical market, Pentane isomers play a vital role across industries ranging from polyurethane foam insulation to refrigeration systems and chemical extraction processes. High-quality Pentane products—particularly n-Pentane (CAS 109-66-0), Isopentane (CAS 78-78-4), and Cyclopentane (CAS 287-92-3)—are essential raw materials for manufacturers seeking efficiency, purity, and environmental compliance.

1. Overview of Pentane Isomers

Pentane is a family of hydrocarbons (C₅H₁₂) consisting of three structural isomers:

• n-Pentane — a straight-chain hydrocarbon known for its strong solvent power and consistent evaporation rate.
• Isopentane (2-Methylbutane) — a branched isomer offering a lower boiling point, ideal for refrigerant and foam-blowing applications.
• Cyclopentane — a cyclic hydrocarbon with excellent insulation performance and zero ozone-depleting potential (ODP).

All three are clear, colorless liquids with low toxicity, high volatility, and compatibility with a wide range of industrial materials.

2. Technical Comparison

Property	n-Pentane	Isopentane (2-Methylbutane)	Cyclopentane
CAS No.	109-66-0	78-78-4	287-92-3
Chemical Formula	C₅H₁₂	C₅H₁₂	C₅H₁₀
Boiling Point (°C)	36.1	27.8	49.3
Density (20°C, g/cm³)	0.626	0.620	0.746
Flash Point (°C)	-49	-51	-37
Applications	Solvent, extraction, blowing agent	Foam blowing, refrigerant blend	Insulation foaming agent

These distinct properties make each isomer suited for specific applications, ensuring performance consistency and compliance with global environmental standards.

3. Industrial Applications

• Refrigeration & Insulation Foams:
  Cyclopentane and Isopentane are widely used as eco-friendly blowing agents in polyurethane (PU) and polyisocyanurate (PIR) foam production. They offer high insulation efficiency with low global warming potential (GWP).
• Solvent Extraction:
  n-Pentane serves as a clean, fast-evaporating solvent in the pharmaceutical, adhesive, and oil extraction sectors.
• Chemical Blends:
  Blended Pentanes (n-/Isopentane or Cyclo/Isopentane) are tailored for optimized foam density, flow, and expansion performance.

4. Quality & Packaging

High-purity Pentane products (95%–99%) are available in ISO tanks, drums, and bulk deliveries, ensuring safe transportation and global supply reliability. Each batch is tested for purity, moisture, and color to meet international quality standards.

5. Sustainability & Global Reach

As environmental regulations tighten worldwide, the transition to non-CFC, non-HCFC blowing agents has accelerated. Cyclopentane and Isopentane are now preferred alternatives for manufacturers seeking greener, high-performance materials. With stable supply capability and flexible logistics, reliable Pentane suppliers help global partners maintain consistent production and cost efficiency.

For manufacturers and distributors seeking high-purity Pentane isomers that meet international standards, reliability and consistency are key. Whether you require n-Pentane for solvent extraction, Isopentane for refrigerant formulations, or Cyclopentane for eco-friendly foam production, sourcing from trusted global suppliers ensures performance and safety.

Learn more about sustainable blowing agents and global chemical standards from ChemEurope — a leading resource for chemical industry insights. Partner with reliable Pentane producers today to secure stable supply, technical support, and long-term value in your production chain.

Indonesia’s industrial growth and expanding refrigeration and foam manufacturing sectors have driven up the demand for high-purity Isopentane. As a critical solvent and blowing agent, Isopentane is widely used in the production of polyurethane (PU) foams, adhesives, and refrigerants. Junyuan Petroleum Group, as a leading Asian supplier, ensures stable supply through consistent production capacity, flexible export logistics, and tailored packaging options. With ISO tank and drum availability, the company is committed to supporting Indonesia’s growing chemical sector with high-quality and dependable solutions.

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Indonesia’s Growing Demand for Isopentane

The Indonesian market has witnessed rapid growth in downstream sectors such as:

• Refrigeration manufacturing

• PU foam production for construction and appliances

• Solvent-based adhesives for packaging and footwear

Isopentane is a preferred choice in these sectors due to its low boiling point, fast evaporation, and excellent solvency properties.

Applications of Isopentane in Indonesia:

1. PU Foam Industry:

Used as a co-blowing agent with Cyclopentane in the production of rigid polyurethane foams, crucial for thermal insulation in refrigerators and freezers.

2. Adhesives and Sealants:

Serves as a solvent that enhances tackiness, controls viscosity, and speeds up drying—important for Indonesia’s footwear, automotive, and construction sectors.

3. Refrigerant Blends:

Incorporated into refrigerant formulations for optimized cooling performance and pressure balance.

How Junyuan Petroleum Group Ensures Stable Supply

1. Strong Production Capacity:

With dedicated facilities for high-purity Isopentane (95% and 99%), Junyuan Petroleum Group maintains a robust and scalable production line to meet bulk demands.

2. Export-Grade Packaging:

Products are shipped in ISO tanks for bulk users and drums for regional distributors and flexible volume clients.

3. Tailored Logistics for Indonesia:

• Close cooperation with regional shipping partners

• Stable lead times and proactive demand planning

• Multi-port shipping options to Jakarta, Surabaya, and other industrial hubs

4. Technical Support:

Our team provides full documentation support (COA, SDS, REACH, etc.) and technical guidance for blending or formulation compatibility.

Conclusion:

As Indonesia continues its industrial expansion, the demand for high-performance solvents and blowing agents like Isopentane will only rise. Junyuan Petroleum Group stands as a reliable partner, offering not only high-quality products but also consistent delivery and technical reliability to help Indonesian manufacturers grow confidently and sustainably.

A Sustainable Alternative to HCFC-141b for Thermoware, Refrigeration, and Construction Industries

With HCFC-141b officially phased out in many countries, Cyclopentane has become the leading blowing agent for environmentally conscious manufacturers. Offering zero ozone depletion potential and low GWP, Cyclopentane ensures top-tier insulation performance in polyurethane foam systems. Widely adopted across thermoware, cold chain, and construction sectors, it is now the preferred solution for global buyers seeking performance and compliance. Our Cyclopentane is available in ISO tank and Drum packaging, ensuring flexible, export-ready delivery for industrial applications.

Cyclopentane, blowing agent, PU foam, 141b replacement, eco-friendly foam chemical, thermal insulation, refrigerant-grade pentane, thermoware industry, polyurethane polyol, #Cyclopentane, #Pentane, #BlowingAgent, #InsulationFoam, #Polyurethane

Why Cyclopentane?

1. Zero Ozone Depletion, Low GWP

• Fully compliant with the Montreal Protocol and Kigali Amendment

• Non-fluorinated, non-ozone-depleting alternative to 141b

• Ideal for long-term environmental strategies

2. Superior Insulation Performance

• Enables high-performance rigid polyurethane foam with excellent thermal resistance

• Ensures energy efficiency in refrigeration and building systems

• Compatible with polymeric MDI and blended polyol

3. Widely Used in Multiple Sectors

• Thermoware products: food containers, iceboxes

• Refrigeration: freezers, refrigerators, water heaters

• Building insulation: PU sandwich panels, PIR boards

4. Global Demand Trends

• Especially strong in Pakistan, India, Southeast Asia, Middle East, and Latin America

• Preferred by foam manufacturers upgrading to green blowing agents

5. Reliable Supply & Export-Ready Packaging

• Available grades: 95% / 99% Cyclopentane

• Packaging options:

• ISO Tank (bulk shipments for large-scale users)

• Drum (flexible supply for regional distributors or smaller factories)

• Backed by expert technical support and export experience

Your Trusted Partner in the Transition from 141b

With proven performance, global acceptance, and sustainable credentials, Cyclopentane is redefining the future of polyurethane insulation. If you’re a thermoware or foam manufacturer seeking a high-purity, export-grade blowing agent, our Cyclopentane is ready to ship.

As of April 28, 2025, the domestic price of Cyclopentane in China stands firm at RMB 11,200 per metric ton, approximately USD 1,555 per metric ton based on today’s official exchange rate (1 USD ≈ 7.2043 RMB).

After a significant adjustment in mid-April, the Cyclopentane market has remained stable for two consecutive weeks. This provides global buyers with a more predictable cost structure for sourcing.

Cyclopentane is a key blowing agent for polyurethane (PU) foam, extensively used in building insulation panels, refrigeration appliances, and cold chain logistics solutions. Stable pricing is crucial for industries targeting low-GWP and energy-efficient products. Global procurement teams are encouraged to leverage the current pricing stability for inventory planning and to mitigate risks linked to raw material price volatility during the second quarter of 2025.

Cyclopentane, PU Foam, Insulation Materials, Refrigeration Industry, Blowing Agents, Global Procurement, China Exports, April 2025, USD Price, RMB Price

Why a 20/80 Cyclopentane/n-Pentane Ratio is Widely Used in the Insulation Industry

In the world of polyurethane (PU) rigid foam insulation, blowing agents play a crucial role in determining foam quality, thermal insulation, and process efficiency. Among the many options available, a blend consisting of 20% Cyclopentane and 80% n-Pentane has emerged as a go-to solution for manufacturers seeking an optimal balance of performance and cost.

Why This Specific Blend?

Each component in the blend brings unique properties to the table:

• Cyclopentane is valued for its low thermal conductivity, allowing foams to achieve excellent insulation performance. It also has zero ozone depletion potential (ODP) and relatively low global warming potential (GWP), making it more environmentally friendly. However, it is more expensive and can pose challenges in flowability and evaporation rate during foam processing.

• n-Pentane, on the other hand, is more economical, with higher vapor pressure and better flowability, making it easier to process, especially in large-scale industrial applications. But used alone, it tends to result in larger, less uniform foam cells, which can compromise insulation performance.

By blending 20% Cyclopentane with 80% n-Pentane, manufacturers can harness the strengths of both components: the superior insulation of Cyclopentane and the process efficiency and cost benefits of n-Pentane.

Where Is This Blend Used?

This pentane mixture is widely applied in:

• Household Refrigerators & Freezers: Used in the insulation layer of refrigerator cabinets and doors, ensuring high energy efficiency and consistent thermal performance.

• Construction Insulation Panels: Applied in rigid PU foam boards for building walls and roofs, providing lightweight, effective thermal barriers.

• Cold Chain Logistics: Employed in the insulation of refrigerated trucks and containers, helping maintain low temperatures during transportation.

Environmental and Safety Considerations

While the blend is non-ozone depleting and has lower GWP than legacy blowing agents like CFCs or HCFCs, it is still flammable and must be handled with proper safety protocols. Many modern production lines are equipped with explosion-proof equipment and ventilation systems to safely manage pentane-based formulations.

Conclusion

The 20/80 Cyclopentane/n-Pentane blend is a prime example of how smart chemical engineering can optimize material performance while balancing economic and environmental concerns. As global demand for energy-efficient insulation grows, such formulations will continue to play a key role in sustainable manufacturing.