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Tailor-made excellence in Pentanes – unique solutions and proven reliability for your specific needs.
Haltermann Carless is the global leader in Cyclopentane manufacturing and the only European producer of all three Pentane isomers – n-Pentane, iso-Pentane and Cyclopentane - giving you unique flexibility and reliability.
With decades of expertise, we provide tailor-made Pentane blends in any mixing ratio, ensuring the optimal balance of performance, purity, and cost efficiency for your applications.
Produced at our Speyer site in Germany, our Pentanes provide a minimum purity of 95 % – giving you the confidence of consistent quality and secure supply.
Pentanes are key to energy savings and CO₂ reduction. As blowing agents in insulation foams, they enhance the thermal efficiency of refrigerators, freezers, building materials and pipe insulation – helping you achieve greater sustainability and performance. Their benefits extend to other applications as well.
High-quality Pentanes with superior characteristics
- Ideal alternative to CFCs, HFCs and substances regulated under PFAS
- Pentane blends in any mixing ratio
- High purities of 95% and more
- Free from disturbing impurities such as aromatics, sulphur and odour
- No Ozone Depletion Potential (ODP = 0) according to the Montreal Protocol
- Low Global Warming Potential (GWP <1)
New: With our ISCC PLUS certified mass balanced Pentanes we actively support our customers in advancing towards a sustainable circular economy.

Pentane Portfolio
Tailor-made to individual needs
Benefit from a comprehensive range of tailor-made Pentane solutions, designed to meet your specific application requirements. As the only European producer of all three Pentane isomers – n-Pentane, iso-Pentane and Cyclopentane – we offer blends in any mixing ratio.

n-Pentane is a chain-like hydrocarbon from the alkane group with the chemical formula C5H12. It is the unbranched representative of the Pentane isomers.
More technical information

iso-Pentane is the first branched, liquid hydrocarbon or paraffin. This group of substances is also called alkanes. The iso-Pentane has a chemical formula of C5H12.
More technical information

Cyclopentane is the first ring-shaped, naturally occurring hydrocarbon. It is present in very small quantities in crude oil, the most common source being naphtha from crackers. The chemical formula for this cycloalkane, or naphthene, is C5H10.
More technical information

With our ISCC PLUS certified mass balance Pentane portfolio (n-Pentane, iso-Pentane, Cyclopentane and Pentan-Blends) we make an important contribution to greater sustainability.
More information in our Blog article
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As the only European manufacturer of all three Pentane isomers and the largest capacity of Cyclopentane, we offer blends according to your individual specifications and are happy to provide all desired mixing ratios.
Contact us for individual requests
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You can find our Pentan brochure and furhter product information in our media library.
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Technical data
Pentanes are hydrocarbons and belong to the family of alkanes. They are the first hydrocarbons to be liquid at room temperature. They are generally characterised by a low boiling point, low density and high vapor pressure. Pure n-Pentane and iso-Pentane are almost odourless.
Our Pentanes have a particularly high degree of purity of at least 95%.
Grade | Application | Production | Composition | Initial boiling point |
Final Boiling point |
Vapour pressure |
Thermal conductivity |
|||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Method/Unit |
n-Pentane |
iso-Pentane |
Cyclopentane |
°C |
°F |
°C |
°F |
25°C |
50°C |
|
||
n-Pentane 95 |
|
GER | min. 95 | - | - | 35 | 95 | 37 | 99 | 68 | 159 | + |
iso-Pentane 95
|
GER | - | min. 95 | - | 25 | 77 | 32 | 90 | 91 | 205 | + | |
Cyclopentane | GER | - | - | min. 95 | 48 | 118 | 50 | 122 | 42 | 103 | +++ | |
n-/Cyclopentane 93/7 | GER | 86-91 | - | 6-9 | 36 | 95 | 50 | 122 | 67 | 155 | + | |
Pentane S |
EPS, |
GER | 78-82 | 18-22 | - | 29 | 84 | 36 | 97 | 73 | 168 | + |
Pentane 75 | GER | 70-77 | 22-28 | - | 31 | 89 | 37 | 99 | 74 | 174 | + | |
Cyclopentane IP 85 | PU Appliances PU Construction | GER | - | 10-17 | 83-87 | 43 | 110 | 50 | 122 | 50 | 119 | +++ |
Cyclopentane IP 70 | GER | - | 24-28 | 70-74 | 38 | 100 | 50 | 122 | 57 | 134 | +++ | |
Cyclopentane IP 50 | GER | - | 45-53 | 47-53 | 31 | 88 | 49 | 120 | 67 | 154 | ++ | |
Cyclopentane IP 30 | GER | - | 65-73 | 27-33 | 28 | 82 | 42 | 108 | 77 | 174 | ++ | |
n-Pentane 95 Cosm. | Cosmetics industry | GER | min. 95 | - | - | 35 | 95 |
37 |
99 | 68 | 159 | + |
iso-Pentane 95 Cosm. | GER | - | min. 95 | - | 25 | 77 |
32 |
90 | 91 | 205 | + | |
n-Pentane 95 | Catalytic solvent |
GER | min. 95 | - | - | 35 | 95 | 37 | 99 | 68 | 159 | + |
iso-Pentane 95 | GER | - | min. 95 | - | 25 | 77 | 32 | 90 | 91 | 205 | + |
Study:
Ternary Pentane blends and their benefits for the industry
Pentane blowing agents are widely used in the industry. Depending on the isomer used, the performance and characteristics of the foams may vary significantly. Haltermann Carless has explored the possibility of creating blends made from all three isomers n-, iso- and Cyclopentanes. The results of these ternary Pentane blends look promising and might offer additional benefits to the PU (polyurethane) and PIR (polyisocyanurate) industry.

Applications across industries
Where quality matters
Pentanes occur naturally in crude oil, naphtha or gasoline. They can be obtained from these by distillation. Our Pentane formulations find application in a wide range of industries, showcasing their versatility and reliability. Whether they contribute to the insulation of buildings, cooling appliances or district heating systems, serve as solvents and process media in the chemical industry or are used as foaming gels in the cosmetics industry, our products consistently deliver compelling results.
The four most important areas of application for our Pentanes:
Highly-efficient insulating foams
Insulation materials, such as Polyurethane (PU), Extruded Polystyrene (XPS), and Expanded Polystyrene (EPS), owe their exceptional properties to Pentane blowing agents. These agents play a crucial role during the manufacturing process, enhancing insulation performance and dimensional stability. Depending on the isomers used the product features can be amended to individual requirements.
Polyurethane (PU) foam:
Cyclopentanes ensure excellent insulation performance with low insulation thickness in Polyurethane (PU) foam production. This is due to the fact that cell gas has a lower heat-conductivity than the ambient air and therefore remains partially in the foam cells of the PU. This provides flexibility in construction and makes PU foams with Cyclopentanes ideally suited for household appliances like refrigerators and freezers, historic buildings as well as other various construction applications such as thermal and pipe insulation.
Extruded Polystyrene (XPS) and Expanded Polystyrene (EPS):
In the manufacturing of XPS and EPS for the construction and packaging industries, our Pentane S grade offers a versatile product formulation. Tailored to meet the specific needs of your project, our Pentane S ensures optimal insulation while maintaining the required dimensional stability.

High-purity Pentanes for Cosmetic & Bodycare
Enhance your cosmetic formulations with our high purity iso-Pentanes, carefully manufactured to meet the exacting standards of the Cosmetics industry. Our iso-Pentanes are a key ingredient in self-foaming shower gels and shaving foams, enhancing the user
experience with its excellent qualities. Innovative formulation: iso-Pentanes dissolved in the cosmetic products are activated when exposed to the heat of water and the skin. This results in finepored and stable foam that is particularly easy to spread. Compliance with cosmetic standardsWe understand the critical importance of adhering to stringent cosmetic requirements.
Our high purity Pentanes are formulated with utmost care to meet and exceed industry standards, ensuringthe safety and quality of your cosmetic formulations.

Pentanes for Catalytic Processes
The chemical industry uses Pentanes in various catalytic processes. As hydrocarbon-based solvents they play an important role in diverse applications, primarily contributing to the production of Linear Low Density Polyethylene (LLDPE).
Our Pentanes are carefully developed to meet the highest standards. They ensure low impurities and consistent quality that are essential for sustainable and stabilising production processes. As a result, Pentanes contribute to the overall quality of your end product.

Benefit from our
comprehensive service
We implement our traditional values such as customer focus, individuality and future orientation in all of our business areas. Customer and supplier proximity is particularly important to us. Together we can develop the best possible solutions for all requirements in the paint, coating and adhesive industry.
Your demands,
our solutions
We offer a wide range of high-purity Pentanes and blends with a minimum purity of 95%.
We supply you worldwide from our production site in Speyer, and offer high flexibility in transport and packaging.
Our Pentanes play a key role in modern insulation materials. They contribute to energy savings and CO2 emission reduction.
We have been working on innovative solutions for more than 160 years, always partnering with our customers.
The hydrogenation unit enables us to offer significantly new Cyclopentane capacity to the global market.