Category Pentane

From HCFC-141b to n-Pentane: The Global Shift in Polyurethane Foam Blowing Agents

The polyurethane (PU) foam industry is undergoing a rapid transformation. With the global phase-out of HCFC-141b, manufacturers are seeking sustainable alternatives that maintain high performance while meeting environmental standards.

That’s where n-Pentane comes in — a clean, efficient, and cost-effective blowing agent that’s redefining insulation foam production.

Why n-Pentane is replacing 141b:

• Environmentally compliant: No ozone depletion potential (ODP = 0) and significantly lower global warming potential (GWP).
• Excellent insulation performance: Ensures fine and uniform cell structure for superior thermal efficiency.
• Lower production cost: Competitive raw material pricing and easy integration with existing foaming equipment.
• Proven applications: Widely used in PU sandwich panels, air duct insulation boards, and cold storage systems by leading manufacturers worldwide.

As demand grows for green insulation materials, switching to n-Pentane is not just a regulatory requirement — it’s a strategic advantage.

Make your insulation greener, safer, and more efficient.
Choose n-Pentane — the new standard for rigid polyurethane foam production.

Estimated reading time: 2 minutes

High-Purity Pentane Portfolio – Reliable, Efficient, and Sustainable

Our Pentane range is developed to deliver consistent quality and optimized performance across multiple industrial applications. With high purity levels and narrow boiling ranges, these Pentanes ensure reliability, efficiency, and environmental compliance in every use.

1. Product Overview

We offer a complete series of Pentane grades designed to meet diverse process requirements:

2. Key Technical Features

• High Purity: Up to 99% for stable and reproducible foam performance.
• Low Sulphur Content: Ensures catalyst protection and cleaner reactions.
• Optimized Volatility: Custom boiling ranges to control foaming speed and cell structure.
• Excellent Compatibility: Suitable for polyol systems and refrigerant formulations.
• Eco-Friendly: Non-ozone depleting alternative to traditional CFCs and HCFCs.

3. Safety & Handling

All Pentane products are classified as highly flammable liquids and vapors.

• Store in a cool, well-ventilated area, away from ignition sources.
• Use closed systems for handling and transfer.
• Ensure compliance with REACH and GHS standards.

4. Applications

• Polyurethane Insulation Foams: Rigid foam for construction and appliance insulation.
• Refrigeration Systems: Used as components in hydrocarbon refrigerant blends.
• Solvent Applications: Precision cleaning and polymer processing.
• Custom Formulations: Tailor-made Pentane Blends for controlled evaporation rates.

5. Packaging Options

• ISO Tanks (15.5MT each) for bulk international shipments.
• Drums (125kg net) for smaller-scale customers or sampling purposes.

• Pentane Blends for PU and EPS Foam Applications | Cyclopentane & Isopentane Solutions
• Cyclopentane: The Eco-Friendly Blowing Agent Driving the Future of PU Foam Insulation
• What is the difference between EPS fire resistance levels A, B, and B1?
• How to make polyurethane foam from cyclopentane?
• Isopentane

The GB/T 22053-2008 standard summary for Pentane Vesicant:

• Standard Number: GB/T 22053-2008
• Chinese Title: 戊烷发泡剂
• English Title: Pentane Vesicant
• Scope:
  • Applies to pentane vesicant refined by distillation from pentane-containing raw materials
  • Primarily used as a blowing agent in expandable polystyrene and flexible polyurethane production
  • Also applicable as a chemical or laboratory solvent

Chemical Information

• Molecular Formula: C₅H₁₂
• Relative Molecular Mass: 72.15 (based on 2001 international atomic weights)

Grades and Composition

Pentane vesicant consists of n-pentane (nCs) and isopentane (iCs), available in 11 grades:

Note: nCs and iCs content may vary within ±5% based on demand.

Technical Requirements

• Appearance: Clear, colorless liquid with no turbidity
• Relative Retention Values (selected components):

Inspection Rules

• Types of Inspection:
  • Factory Inspection: Conducted by the manufacturer’s quality department; includes total pentane content and C6+ components
  • Type Inspection: Covers all parameters; performed at least once per month during normal production
• Acceptance: Must be completed within 15 days of receipt by the user
• Sampling: As per SY/T 0543
• Judgment: Based on GB/T 1250 rounding comparison method; if any parameter fails, retest from double units. If retest fails, the batch is rejected.

Labeling, Packaging, Transport, Storage

• Labeling:
  • Must include product name, trademark, grade, manufacturer name and address, net weight, batch number, standard code, and “flammable” symbol per GB 190
• Packaging:
  • Filling coefficient for tankers or containers must not exceed 0.85
• Transport:
  • Ensure ventilation, avoid impact, dragging, direct sunlight, and open flames; comply with national hazardous goods transport regulations
• Storage:
  • Separate from oxygen, compressed air, oxidizers
  • Avoid heat sources, sunlight, rain
  • Display “No Smoking/Fire” signs, implement fire/explosion protection measures, and equip with appropriate fire extinguishers

Safety Information

• Physical Hazards:
  • Highly flammable; vapor forms explosive mixtures with air
  • Vapor is heavier than air and may travel to ignition sources
• Health Hazards:
  • Low toxicity
  • High concentrations may irritate eyes and respiratory tract, cause anesthesia or unconsciousness
  • Chronic exposure may lead to mild dermatitis and mucosal irritation
  • Protective equipment required in high-concentration environments

Referenced Standards (selected)

• GB/T 259 – Determination of water-soluble acids and bases in petroleum products
• GB/T 1250 – Rounding and judgment methods for limit values
• SH 0164 – Packaging, storage, and delivery rules for petroleum products
• SY/T 0542 – Gas chromatography method for light hydrocarbon components
• SY/T 0543 – Sampling method for stable light hydrocarbons

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.

This article provides a comprehensive comparison of three chemical compounds—n-Pentane, Isopentane, and Cyclopentane—based on their UN numbers, CAS numbers, and Harmonized System (HS) codes. These identifiers are crucial for safety regulations, chemical tracking, and international trade compliance. Understanding their distinctions helps industries manage transportation, storage, and customs procedures effectively.

Comparison Table

Chemical Compound | UN Number | CAS Number | HS Code

n-Pentane | UN 1265 | CAS 109-66-0 | 2901.10.10
Isopentane | UN 1265 | CAS 78-78-4 | 2901.10.90
Cyclopentane | UN 1146 | CAS 287-92-3 | 2902.19.00

Keywords

n-Pentane, Isopentane, Cyclopentane, UN Number, CAS Number, HS Code, Chemical Identification, International Trade, Chemical Safety, Transportation Regulations

This structured comparison allows professionals in chemistry, logistics, and trade to better navigate classification and compliance requirements.

This article provides a comprehensive comparison of three chemical compounds—n-Pentane, Isopentane, and Cyclopentane—based on their UN numbers, CAS numbers, and Harmonized System (HS) codes. These identifiers are crucial for safety regulations, chemical tracking, and international trade compliance. Understanding their distinctions helps industries manage transportation, storage, and customs procedures effectively.

Comparison Table

Chemical Compound | UN Number | CAS Number | HS Code

n-Pentane | UN 1265 | CAS 109-66-0 | 2901.10.10
Isopentane | UN 1265 | CAS 78-78-4 | 2901.10.90
Cyclopentane | UN 1146 | CAS 287-92-3 | 2902.19.00

Keywords

n-Pentane, Isopentane, Cyclopentane, UN Number, CAS Number, HS Code, Chemical Identification, International Trade, Chemical Safety, Transportation Regulations

This structured comparison allows professionals in chemistry, logistics, and trade to better navigate classification and compliance requirements.

This article provides a comprehensive comparison of three chemical compounds—n-Pentane, Isopentane, and Cyclopentane—based on their UN numbers, CAS numbers, and Harmonized System (HS) codes. These identifiers are crucial for safety regulations, chemical tracking, and international trade compliance. Understanding their distinctions helps industries manage transportation, storage, and customs procedures effectively.

Comparison Table

Chemical Compound | UN Number | CAS Number | HS Code

n-Pentane | UN 1265 | CAS 109-66-0 | 2901.10.10
Isopentane | UN 1265 | CAS 78-78-4 | 2901.10.90
Cyclopentane | UN 1146 | CAS 287-92-3 | 2902.19.00

Keywords

n-Pentane, Isopentane, Cyclopentane, UN Number, CAS Number, HS Code, Chemical Identification, International Trade, Chemical Safety, Transportation Regulations

This structured comparison allows professionals in chemistry, logistics, and trade to better navigate classification and compliance requirements.

This article provides a comprehensive comparison of three chemical compounds—n-Pentane, Isopentane, and Cyclopentane—based on their UN numbers, CAS numbers, and Harmonized System (HS) codes. These identifiers are crucial for safety regulations, chemical tracking, and international trade compliance. Understanding their distinctions helps industries manage transportation, storage, and customs procedures effectively.

Comparison Table

Chemical Compound | UN Number | CAS Number | HS Code

n-Pentane | UN 1265 | CAS 109-66-0 | 2901.10.10
Isopentane | UN 1265 | CAS 78-78-4 | 2901.10.90
Cyclopentane | UN 1146 | CAS 287-92-3 | 2902.19.00

Keywords

n-Pentane, Isopentane, Cyclopentane, UN Number, CAS Number, HS Code, Chemical Identification, International Trade, Chemical Safety, Transportation Regulations

This structured comparison allows professionals in chemistry, logistics, and trade to better navigate classification and compliance requirements.

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.

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