Understanding Isopentane Synonyms for Global Procurement and Documentation

Systematic Name (IUPAC)

• 2‑Methylbutane

Common Names

• Isopentane
• Methylbutane
• iso‑Pentane
• iso‑C5H12

Other Synonyms

• Ethyldimethylmethane
• Isoamyl hydride
• 1,1‑Dimethylpropane
• 1,1,2‑Trimethylethane
• Exxsol Isopentane S (trade name)

Related Isomers

• n‑Pentane
• Neopentane (2,2‑Dimethylpropane)

Technical Data

Property	Value
CAS Number	78‑78‑4
Formula	C₅H₁₂
Boiling Point	~27.8 °C
Appearance	Colorless liquid

Why Synonyms Matter in Trade

• Regulatory compliance: Different agencies may list Isopentane under varying synonyms.
• Buyer communication: Procurement managers often recognize “iso‑Pentane” more readily than “2‑Methylbutane.”

• n-Heptane MSDS | Material Safety Data Sheet
• Cyclopentane / Isopentane Blend (50–50%)
• High-Purity Isopentane & Pentane Series — Case Study in Fine Chemical Applications
• Junyuan Petroleum Group’s October Safety Excellence Commendation Meeting
• Polymer-Grade n-Hexane with Consistent Quality

FAQ – Pentane Blend 70/30

Pentane Blend 70/30 is a mixture of n-Pentane and Isopentane in a 70:30 ratio, commonly used as a blowing agent or solvent in industrial applications.

It is widely applied in polyurethane foam production, solvent formulations, and as a chemical intermediate.

The blend contains high-purity components, typically above 95–99% hydrocarbon content.

Packaging options include ISO tanks, drums, or bulk shipment according to customer needs.

It is flammable; handle with proper safety measures, including ventilation and PPE.

The n-Pentane to Isopentane ratio can be customized to suit specific requirements.

Ensuring process stability and low-impurity performance for precision chemical applications

In a fine chemical R&D project, a company faced challenges with solvent impurities affecting product stability. To ensure research efficiency and process reliability, they selected our Isopentane 99% and Pentane series products.

Product Specifications:

• Isopentane: 99%
• n-Pentane: per batch records
• Cyclopentane: <100 ppm
• Heavy components: <100 ppm
• Light components: <0.5%
• Benzene: <10 ppm
• Total sulfur: <1 ppm
• Non-volatile matter: <1 mg/100 ml

After using this batch, the R&D team observed significantly improved solvent system stability and effective control of impurities, making the overall process smoother. The team commented, “The high purity and low impurity Pentane series greatly reduced process uncertainty, which is exactly the quality assurance we needed.”

Case Summary:
The high-purity Pentane series not only meets strict specification requirements but also provides reliable process support for fine chemical, electronic materials, and precision applications.

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.

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1. Product Overview

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

Product	Purity (%)	Boiling Range (°C)	Flash Point (°C)	Key Applications
n-Pentane 99%	≥99.0	35–36	-40	Polyurethane rigid foam blowing agent, solvent
Isopentane 99%	≥99.0	27–29	-51	Quick-foaming systems, refrigerant blends
Pentane Blend 80/20 (n-/iso-)	≥99.0	30–35	-45	Balanced foam expansion, insulation boards
Pentane Blend 50/50 (n-/iso-)	≥99.0	28–34	-47	General-purpose polyurethane systems
Pentane Blend (Cyclo/Isopentane)	≥99.0	28–37	-40	Low-conductivity, CFC-free insulation foam

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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.

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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.

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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.

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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

This high-purity hydrocarbon blend—composed of 40% Isopentane and 60% Normal Pentane—is specifically formulated as a blowing agent for EPS and PU foam applications. It offers excellent volatility, controlled density, and minimal sulfur content, ensuring clean expansion and stable foam structure. The product is manufactured under strict quality protocols and verified by ASTM and gas chromatography methods.

Applications

• Expandable Polystyrene (EPS) foam production
• Polyurethane (PU) foam systems
• Insulation materials requiring low boiling point blowing agents

Advantages

• Consistent composition: 40% Isopentane / 60% Normalpentane ±2%
• Low total sulfur: ≤2.0 wt ppm
• Minimal non-volatile residue: ≤100 wt ppm
• Optimized density: 0.62 ± 0.01 g/cm³
• Verified by ASTM D-287, D-5453, D-1353, and D-1364 standards
• Excellent compatibility with EPS and PU formulations

Technical Specifications

Property	Method	Unit	Specification
C4 & Lighter	Gas Chromatography	wt ppm	40 ± 2
C6 & Heavier	Gas Chromatography	wt ppm	≤ 20
Saturated Gas	Gas Chromatography	wt ppm	≤ 100
Unsaturated Gas	Gas Chromatography	wt ppm	Balance
Non-Volatile Matter	ASTM D-1353	wt ppm	≤ 100
n-Pentane	Gas Chromatography	wt %	60 ± 2
Isopentane	Gas Chromatography	wt %	40 ± 2
Density (15.6°C)	ASTM D-287	g/cm³	0.62 ± 0.01
Total Sulfur	ASTM D-5453	wt ppm	≤ 2.0
Odor	ASTM D-1364	wt ppm	≤ 100
Chemical Formula	—	—	C5H10

Primary Keyphrase: Isopentane/Normalpentane Blowing Agent

Synonym Variants:

• Pentane Blend Blowing Agent
• Hydrocarbon Foam Expander
• EPS/PU Blowing Solution
• Volatile Organic Blowing Agent
• C5 Hydrocarbon Blend
• Foam Expansion Agent
• Pentane-Based Propellant
• Polyurethane Foam Expander
• Expandable Polystyrene Agent
• Low-Boiling Point Blowing Agent

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:

Grade	n-Pentane (%)	Isopentane (%)
Fo	0	100
F1	10	90
F2	20	80
F3	30	70
F4	40	60
F5	50	50
F6	60	40
F7	70	30
FB	80	20
F9	90	10
F10	100	0

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):

Component	Retention Value
Isobutane	0.368
n-Butane	0.531
Isopentane	1.000
n-Pentane	1.237
n-Hexane	2.658
Benzene	3.329

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

High-Purity Pentane Blend (50% / 50%) — The Ideal Foaming Agent for Malaysia’s EPS, Panel & Refrigerator Industries

Product Overview

Our high-purity Pentane blend combines n-Pentane and Isopentane (50% / 50%), optimized for EPS, XPS, PU, and PIR foam applications.
With a bromine index <10, this formulation guarantees low olefin content, excellent stability, and clean processing for superior foam quality.

Specification	Typical Value
n-Pentane content	50%
Isopentane content	50%
Bromine index	<10 mg Br/100g
Purity	High
Moisture	≤50 ppm
Sulfur	≤1 ppm
Appearance	Clear, colorless liquid
Packaging	15.5 MT / ISO Tank (26m³)

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Key Advantages

✅ Balanced Volatility for Uniform Foaming
The equal ratio of n-Pentane and Isopentane delivers stable cell formation, optimal insulation, and reduced density variation in EPS and PU systems.

✅ Ultra-Low Bromine Index (<10)
Ensures high chemical purity, preventing side reactions, discoloration, or polymer degradation during foaming.

✅ Excellent Stability in Malaysia’s Climate
Performs reliably under tropical temperatures without phase separation or expansion issues.

✅ Eco-Friendly Alternative to HCFCs
Non-ozone-depleting, energy-efficient, and compliant with global environmental standards.

✅ Multi-Industry Application
Ideal for:

• EPS & XPS insulation blocks
• PU / PIR rigid foam for refrigerators & freezers
• Insulated sandwich panels for cold storage and construction
• Thermal packaging & cold-chain boxes

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Target Customers in Malaysia

1️⃣ EPS / XPS Manufacturers

• Polyfoam, Beepack, Insulpack, Styropack, and similar foam producers.

2️⃣ Sandwich Panel & PU System Houses

• Kingspan Insulation (Malaysia), K-Flex, JRD Insulation, U Panel Systems.

3️⃣ Refrigerator & Freezer Manufacturers

• Panasonic Malaysia, Sharp, Hisense, Midea, Haier, and OEM assemblers.

4️⃣ Cold Storage & Construction Insulation Contractors

• Companies involved in refrigerated warehouses, food logistics, and industrial buildings.

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Packaging & Logistics

• 15.5 MT / ISO Tank (26m³) — safe bulk shipment for industrial use
• Fully compliant with IMDG / UN 1265 (Pentanes)
• Equipped with nitrogen blanketing system for transport stability
• Optional drum packaging available for sampling and pilot runs

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Why Choose This Pentane Blend

• Balanced n-/Isopentane ratio for predictable performance
• Low impurity and low bromine index for premium foam quality
• Consistent supply and competitive pricing
• Trusted by insulation, EPS, and appliance manufacturers across Asia

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Conclusion

As Malaysia’s insulation, packaging, and appliance industries move toward eco-friendly and efficient foaming systems, this n-Pentane and Isopentane blend (50% / 50%) stands out for its purity, safety, and reliability.
From EPS foam blocks to refrigerator insulation panels, it ensures performance stability, consistent yield, and regulatory compliance — the perfect balance of quality and value.

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.

We are pleased to introduce our premium-grade Cyclopentane–Isopentane blend, engineered to meet Cyclopentane–Isopentane Blend 50/50: High-Purity Blowing Agent for South American Foam and Refrigeration Industries

Looking for a reliable, high-performance blowing agent for rigid polyurethane foam production? Our Cyclopentane–Isopentane Blend 50/50 offers a precisely balanced formulation with exceptional purity, engineered to meet the demands of manufacturers across South America.

Product Overview: Cyclopentane–Isopentane Blend 50/50 This mixed pentane blend contains equal parts Cyclopentane and Isopentane (50% each), delivering consistent expansion behavior, excellent solubility, and compatibility with a wide range of foam systems used in insulation, refrigeration, and packaging.

Technical Specifications

• Cyclopentane: 50%
• Isopentane: 50%
• Sulfur content: < 2 ppm
• Moisture content: < 50 ppm

Key Benefits for South American Manufacturers

• Stable performance in tropical and temperate climates
• Excellent thermal insulation and expansion properties
• Ultra-low sulfur and moisture levels reduce corrosion risk
• Environmentally responsible with reduced VOC emissions
• Fully compliant with international safety and handling standards

Applications

• Rigid polyurethane foam insulation
• Refrigeration panel manufacturing
• Eco-friendly packaging solutions
• Aerosol propellants and chemical intermediates

Packaging Format Due to its flammability and volatility, Cyclopentane–Isopentane Blend 50/50 is exclusively available in ISO tank packaging. This format ensures secure bulk transport, temperature stability, and compliance with international regulations for hazardous materials.

Why Choose Our Blend? We offer consistent quality, responsive service, and technical expertise to support South American clients in achieving operational efficiency and product excellence. Our logistics team provides full export documentation, including COA, SDS, and BL, ensuring smooth customs clearance across Brazil, Argentina, Chile, Colombia, and beyond.

Contact Us Today For product inquiries, sample requests, or technical consultations, reach out to our international sales team. We are committed to building long-term partnerships based on trust, transparency, and performance.

For more insights into the safe handling and application of blowing agents in polyurethane systems, we recommend reviewing the UN Recommendations on the Transport of Dangerous Goods and the American Chemistry Council’s guidelines on foam insulation. These resources help ensure compliance with international standards and support best practices in chemical logistics and product stewardship.

By aligning with global benchmarks and offering consistent, high-purity formulations, our Cyclopentane–Isopentane Blend (50/50%) continues to be a trusted choice for South American manufacturers seeking performance, safety, and reliability.