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.

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.

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

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.

Polyurethane Rigid Foam (PUR) is a high-performance, closed-cell insulation material widely used in cold storage, cold-chain logistics, industrial refrigeration, and other low-temperature insulation applications. Its excellent thermal insulation, structural stability, and adaptability make it the material of choice for modern insulation projects.

Its core advantages include:

1. Outstanding Thermal Insulation

Low Thermal Conductivity: PUR exhibits thermal conductivity as low as 0.018–0.024 W/(m·K), making it one of the most effective insulation materials currently available. This reduces energy loss and lowers operational costs. High Closed-Cell Content (≥90%): The closed-cell structure blocks air convection, enhances moisture resistance, and prevents performance degradation due to water vapor infiltration.

Enhancement: The use of high-purity Cyclopentane, Isopentane, or n-Pentane as blowing agents ensures that the foam maintains its low thermal conductivity and closed-cell integrity over time, directly contributing to superior insulation efficiency.

2. Structural Strength and Durability

Compressive Strength and Deformation Resistance: With densities typically ranging from 35–60 kg/m³ and compressive strengths of 150–300 kPa, PUR can support internal racks, equipment, and transport loads. Dimensional Stability: Maintains its volume across extreme temperatures (-50°C to +100°C) with minimal shrinkage or cracking, ensuring long-term reliability.

Enhancement: The controlled purity of pentane-based blowing agents (<2 ppm sulfur, <50 ppm moisture) prevents defects during production and guarantees that the foam retains its strength and dimensional stability throughout its lifecycle.

3. Easy Installation and Adaptability

On-Site Spraying / Pouring: PUR can be applied seamlessly onto walls, roofs, or cavities, eliminating thermal bridges and providing a continuous insulation layer. Compatibility with Multiple Substrates: Bonds firmly to concrete, metal sheets, and composite panels, making it ideal for complex cold storage structures.

Enhancement: Using optimized pentane blends ensures uniform foam expansion and adhesion, improving application efficiency and minimizing material waste.

4. Environmental Friendliness and Safety

Low Global Warming Potential (GWP): Modern PUR systems employ environmentally friendly blowing agents such as Cyclopentane, Isopentane, or water-based formulations, reducing environmental impact. Fire Safety: With proper flame retardants, PUR can achieve B1-class flame resistance (GB 8624-2012), meeting stringent cold storage fire standards.

Enhancement: Our high-purity pentane products are fully compliant with international environmental regulations, providing a sustainable and safe option for manufacturers aiming to meet both GWP and fire safety requirements.

5. Economic Advantages

Although initial costs may be higher than traditional materials like EPS or rock wool, PUR’s long lifespan (20+ years) and energy-saving properties significantly reduce operating costs.

Enhancement: By selecting our reliable pentane blowing agents, manufacturers can achieve consistent foam quality and maximize energy efficiency, enhancing ROI over the lifetime of the insulation system.

Application Considerations

Controlled Installation Environment: Surfaces must be dry and clean; recommended temperature is 15–35°C with humidity below 85%. Insulation Thickness Design: Determined by the target cold storage temperature (e.g., -18°C for refrigeration or -60°C for ultra-low temperature). Typical PUR layers range from 50–150 mm. Safety Protection: Workers must wear protective gear to avoid exposure to uncured chemicals.

Enhancement: Using high-purity pentane ensures predictable foam behavior even under varying environmental conditions, reducing installation risk and ensuring design specifications are met.

Why Pentane-Based Blowing Agents Are Critical

The superior performance of PUR depends directly on the quality of the blowing agent. Our Cyclopentane, Isopentane, and n-Pentane products offer:

Purity Control: Low sulfur (<2 ppm) and low moisture (<50 ppm) for defect-free foam. Processing Stability: Uniform cell structure for optimal insulation and mechanical strength. Versatility: Suitable for a wide range of applications including cold storage, refrigerated trucks, and PIR/PUR panels. Environmental Compliance: Non-ozone-depleting, low GWP, aligned with global regulations.

Conclusion

Polyurethane Rigid Foam remains the top choice for modern cold storage insulation, offering unparalleled thermal performance, durability, and adaptability. High-purity pentane-based blowing agents are essential to fully realize these benefits, ensuring:

Maximum thermal insulation efficiency Consistent structural integrity Reliable production and long-term performance Compliance with environmental and fire safety standards

By choosing our products, manufacturers can deliver high-quality, energy-efficient, and environmentally responsible insulation solutions, ensuring optimal performance for decades.

As global industries continue to advance toward energy efficiency and sustainable construction, demand for cost-effective and versatile raw materials is on the rise. One such material is n-Pentane 95%, widely recognized for its performance in insulation foam manufacturing and industrial solvent applications.

Why n-Pentane 95%?

Optimized Purity for Industrial Use With a guaranteed 95% purity, n-Pentane strikes the right balance between performance and cost. This grade is especially suitable for large-scale industrial applications where ultra-high purity is not necessary but consistent quality is critical. Preferred Blowing Agent in Insulation Panels n-Pentane 95% is extensively used as a blowing agent in the production of PU and PIR sandwich panels, roofing boards, and cold storage insulation panels. Its compatibility with modern production lines ensures excellent insulation performance while helping manufacturers meet regional energy-efficiency standards. Cost Efficiency Compared with higher-purity solvents, n-Pentane 95% offers a more economical solution without compromising on application results. This makes it highly attractive for companies that require regular, bulk procurement. Versatile Industrial Applications Beyond insulation materials, n-Pentane 95% is also applied in adhesives, coatings, and cleaning formulations across multiple industrial sectors. Its fast evaporation rate and solvent properties make it a reliable choice for diverse manufacturing needs.

Packaging and Logistics

n-Pentane 95% is typically supplied in ISO tanks, drums, or customized bulk packaging to meet different production scales. Our logistics partners ensure compliance with international hazardous goods regulations, guaranteeing safe and timely delivery.

Market Outlook

With construction growth across the Middle East, Asia, and beyond, the need for energy-saving insulation materials is rapidly expanding. n-Pentane 95% will remain a cornerstone raw material for manufacturers aiming to deliver high-quality, cost-effective solutions for modern infrastructure and industrial projects.

Junyuan Petroleum Group, China’s largest n-Pentane producer, has successfully achieved continuous exports for the 19th consecutive year. Recently, 260 tons of n-Pentane were shipped from Qingdao Port to Colombia, marking another solid step in the company’s steady expansion into international markets.

Over the past years, Junyuan has actively promoted the transformation and upgrading of the petrochemical industry by relying on advanced naphtha chemical technology. Its products not only hold a strong position in the domestic market but also represent a leap from “Made in China” to “Global Solutions.” Through in-depth market research and front-line engagement, Junyuan has strategically targeted regions such as Southeast Asia and South America. By collaborating with major domestic trading partners, participating in international exhibitions, and opening up trade channels along the Belt and Road, the company has significantly expanded the global reach of its n-Pentane products.

In Colombia, particularly in the port cities of Buenaventura and Cartagena, n-Pentane plays a vital role:

Blowing Agent in polyurethane (PU) and polystyrene (EPS) foams, essential for insulation in refrigerators and construction panels.

Organic Solvent in adhesives, coatings, and inks.

Electronics Cleaning Agent to remove grease and impurities in manufacturing processes.

Refrigerant Component (R601) in eco-friendly cooling systems.

Chemical Intermediate, Laboratory Applications, and Specialty Uses in fine chemicals, chromatography, and performance-enhancing materials.

With its “Terminal + Internationalization” dual-driven strategy, Junyuan has built a strong supply chain that ensures reliable delivery through ISO tanks and customized packaging solutions. The company’s efforts are also aligned with the high-level development of inland open economy pilot zones in China, while strengthening long-term cooperation with international partners.

A company spokesperson emphasized that exporting to Colombia is an important milestone in Junyuan’s international strategy. Looking ahead, Junyuan will continue to explore overseas market potential, expand export volumes, and enhance the global recognition of its brand concept — “Junyuan · More than n-Pentane.” By doing so, Junyuan Petroleum Group aims to bring more high-quality naphtha-based chemical products to the global stage and contribute to the growing recognition of Chinese manufacturing worldwide.

🧪 Two Essential Blowing Agents: Cyclopentane and Pentane

In the world of insulation and polymer manufacturing, blowing agents play a critical role in creating lightweight, energy-efficient materials. Among the most widely used are cyclopentane and pentane, both hydrocarbon compounds known for their effectiveness and environmental advantages. Let’s explore their properties and applications.

🔹 Cyclopentane: Properties and Applications

Physical and Chemical Characteristics

Cyclopentane is a colorless, highly volatile liquid with a distinct gasoline-like odor. Key properties include:

• Freezing Point: –94°C
• Boiling Point: ~49°C
• Vapor Density: 2.4 times that of air
• Vapor Pressure: 36.6 kPa at 20°C; 69 kPa at 38°C
• Density (20°C): 0.745 g/cm³
• Flash Point (closed cup): –37°C (Highly flammable)
• Autoignition Temperature: 361°C
• Explosion Limits (vol%): 1.5% – 8.7%
• Occupational Exposure Limit (TLV/TWA): 600 ppm

Technical Specifications

Commercial-grade cyclopentane typically meets the following standards:

• Appearance: Clear, colorless liquid with no suspended solids
• Purity: ≥99%
• Moisture Content: <50 ppm
• Non-volatile Residue: <10 ppm
• Acidity: Neutral, free of acidic substances

Application Highlights

Cyclopentane is prized for its zero ozone depletion potential (ODP) and zero global warming potential (GWP), making it an ideal replacement for CFC-11 in foam production. It is commonly used in:

1. CFC-free refrigerators and freezers
2. Cold storage insulation systems
3. Pipeline thermal insulation

Usage Notes

• Cyclopentane has limited solubility in polyether polyols, so low-viscosity polyols are preferred.
• It can be blended with isopentane to optimize performance.

🔸 Pentane: Properties and Applications

Pentane refers to a group of isomers, primarily n-pentane and isopentane, both used in industrial applications.

Physical and Chemical Characteristics

At room temperature, pentane is a clear, colorless liquid with a faint aromatic odor. It is:

• Free of olefins
• Free of suspended solids and water

Technical Specifications

Typical industrial-grade pentane meets the following criteria:

• Appearance: Clear, no sediment or haze
• Purity: ≥99% for n-pentane; ≥98% for isopentane
• Composition: n-pentane is rich in straight-chain alkanes; isopentane contains branched isomers
• Moisture Content: <20 ppm
• Sulfur Content: <1 ppm
• Bromine Index: Low (indicates minimal unsaturated hydrocarbons)

Application Highlights

Pentane is derived from efficient distillation of light hydrocarbons from oil fields. Its main uses include:

1. Desorption agent in molecular sieve dewaxing (n-pentane)
2. Blowing agent for expandable polystyrene (EPS) — often a blend of n- and isopentane
3. Polyurethane foam production, often in combination with cyclopentane

🌍 Environmental and Industrial Relevance

Both cyclopentane and pentane are vital in the shift toward eco-friendly insulation materials. Their low environmental impact and high efficiency make them indispensable in modern manufacturing, especially as industries move away from ozone-depleting substances.

In the heart of a bustling industrial hub, where innovation meets environmental stewardship, a quiet hero plays a pivotal role in shaping the future of construction. This hero is n-Pentane, a simple yet powerful hydrocarbon that has become the backbone of eco-friendly insulation solutions and is indispensable for modern manufacturing processes.

Once overlooked in favor of less sustainable alternatives, n-Pentane emerged as a game-changer in the production of high-performance insulation panels. These panels, widely applied in areas such as cold storage, roof and wall cladding, façades, and insulated industrial doors, depend on n-Pentane to create their lightweight, energy-efficient cores. Its introduction has revolutionized the thermal insulation industry while addressing critical environmental concerns. Unlike older materials that harmed the ozone layer, n-Pentane boasts a zero ozone depletion potential (ODP), affirming its role as a key enabler of environmentally responsible manufacturing.

The story of n-Pentane begins in advanced production facilities, where it serves as an essential blowing agent in creating polyurethane and polyisocyanurate foams. These foams rely on n-Pentane to expand and form tiny bubbles, resulting in a highly effective structure for heat insulation. This process transforms raw materials into reliable products such as panels for extreme climates, significantly reducing energy use across diverse applications. Whether safeguarding perishable goods in cold storage or improving building energy efficiency, n-Pentane is at the core of sustainable solutions.

What truly sets n-Pentane apart is its remarkable ability to combine outstanding performance with environmental sustainability. It is a perfect match for manufacturers who prioritize eco-friendly initiatives and compliance with global green building standards. By contributing to modern insulated panels, n-Pentane facilitates projects that aim for both durability and environmental responsibility, reflecting its alignment with global trends in sustainable construction.

Beyond its technical applications, n-Pentane ensures smooth supply chain operations. Manufacturers worldwide depend on its reliable quality to produce top-tier insulation products on tight timelines, meeting the evolving needs of their markets and projects.

In a world increasingly committed to sustainability, n-Pentane is far more than a chemical—it is a catalyst for progress. From protecting perishable goods to improving energy efficiency in construction, it enables a future where buildings are greener, energy is conserved, and the planet is preserved. As the drive for sustainable practices continues, n-Pentane remains an essential component in shaping a world where innovation and environmental care go hand in hand.

#Cyclopentane #Isopentane #nPentane #nHexane #nHeptane #SulfidingAgent #Pentane #Hexane #Heptane #MayDay #LabourDay #Logistics #ChemicalIndustry #SupplyChain

As Labour Day holidays vary across countries, timely coordination in logistics becomes essential. For global buyers of hydrocarbons like Pentane, Hexane, Heptane, and sulfiding agents, early planning ensures supply chain continuity during the early May slowdown.

With the global Labour Day (May Day) holidays approaching, it’s crucial for international buyers of chemical raw materials to prepare ahead—especially when sourcing from across regions with varying public holiday schedules.

Our product portfolio covers a wide range of high-purity hydrocarbons, including n-Pentane, Isopentane, Cyclopentane, n-Hexane, n-Heptane, and various sulfiding agents. These materials serve industries from polyurethane insulation, refrigeration, and adhesives to pharmaceuticals, refining, and electronics.

Key Holiday Timelines to Note:

• Russia: May 1–3, with many extending holidays until May 9 (Victory Day)

• Japan: Golden Week, typically May 1–7, with some businesses closed for up to 11 days

• France: May 1 only, strict labor laws prohibit most business activities

• Australia: Varies by state, with Queensland and Northern Territory observing May 6

• UK, Egypt, Pakistan, South Africa, Thailand, and others: May 1 as a national holiday

No May 1 Holidays:

Markets such as South Korea, Israel, the United States, Canada, and the Netherlands operate normally during early May but observe labor-related holidays at other times.

“🌟 GET FOAM, NOT FOMO! 🌟 Foam Expo is the hub for innovation in foam technologies. We’re here showcasing our high-purity pentane solutions—essential for eco-friendly foam production and advanced thermal insulation. Let’s innovate together!

UNLOCK A YEAR OF BUSINESS OPPORTUNITIES

Foam Expo is the continent’s largest foam and adhesives supply chain event, offering three days of networking, innovation, and business growth. Explore new materials, technologies, and solutions, gain insights from conference sessions, and connect with key decision-makers at the expo. With foam and adhesives under one roof, your team can maximize opportunities and set the stage for success all year long.

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.