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Cyclohexane-Rich Naphthenic Solvent · European B2B Sourcing

Cyclohexane-Rich Naphthenic Solvent
(C6 cycloparaffinic hydrocarbon fluid)

A specialty naphthenic (cycloparaffinic) hydrocarbon fluid in the C6 range, composed primarily of cyclohexane (~75 wt%) with smaller fractions of n-alkanes, isoalkanes and other cyclics. This type of material is widely commonly referred to in the European market as cyclohexane-rich naphthenic hydrocarbon fluid of this profile. The aromatic content is essentially zero (~1 wt ppm). Boiling range typically ~78–83°C, flash point ~−19°C (closed cup). This is a highly flammable liquid classified UN3295 class 3 PG II. Used in industrial adhesives, coating chemistry, cleaning and selected polymer-related formulations, where the cyclic structure provides specific solvency behaviour that aliphatic hexane and heptane do not.

Important regulatory note before any commercial discussion: this material carries a Repr. 2 / H361f classification (suspected of damaging fertility), originating from the cyclohexane component. This is in addition to the standard flammability and aspiration classifications. Suitability for the intended application must be assessed by the buyer, particularly in regulated, consumer-facing or food-adjacent formulations. Full SDS review at the enquiry stage is essential. See the regulatory section below for the complete classification load.
Cyclohexane-rich UVCB substance (EC 926-605-8, no single CAS), composed primarily of cyclohexane (CAS 110-82-7) with smaller fractions of other cyclics, n-alkanes and isoalkanes.
Boiling range ~78–83°C: a narrow distillation cut, density ~0.759 g/cm³ at 15°C, viscosity ~0.93 cSt at 20°C, vapour pressure ~110 hPa at 20°C.
Flash point ~−19°C: highly flammable liquid. UN3295 class 3 PG II. Site handling and transport documentation must be confirmed from current SDS before ordering.
Five CLP classifications + EUH066: Flam. Liq. 2, Asp. Tox. 1, STOT SE 3, Aquatic Chronic 2, and Repr. 2 (H361f). Signal word: Danger. Informed buyer assessment required.
Request spec, SDS & availability Check whether this grade fits

Comparing with adjacent options? See hexane for an aliphatic C6 alternative, heptane for a slightly heavier dearomatised aliphatic, or the isoparaffinic solvents page for branched-chain alternatives without the H361f classification.

Market realitySpec snapshotGrade fitRegulatoryApplicationsRequest quote
Cyclohexane-rich UVCB
Boiling range ~78–83°C
Flash point ~−19°C, Flam. Liq. 2
Aromatic ~1 wt ppm
UN3295, class 3, PG II

Market reference

Market reference cyclohexane-rich naphthenic hydrocarbon fluid

This product type is commonly referenced as cyclohexane-rich naphthenic hydrocarbon fluid. Alcoris routes enquiries to suppliers in the network for equivalent cyclohexane-rich naphthenic hydrocarbon fluids, sourced from multiple producers and supply routes depending on availability and the specification required.

The material profile described on this page (cyclohexane-rich UVCB, EC 926-605-8, ~75 wt% cyclohexane, essentially aromatic-free, ~78–83°C boiling range, ~−19°C flash point, five CLP classifications including Repr. 2 / H361f) is the structural definition of the grade band, regardless of producer. Exact specifications, certificate of analysis values and regulatory documentation may differ between supply sources, and are confirmed at the time of quotation by the relevant supplier.

Market reality

Four things buyers resolve before the price discussion

For this material the commercial conversation typically starts with regulatory acceptability and grade fit, not price. The four items below are the most important to clarify upfront.

01
H361f acceptability
The Repr. 2 / H361f classification (suspected of damaging fertility) is the first item to assess. Some buyers, particularly in consumer-facing or regulated formulations, have internal restrictions on substances carrying any reproductive toxicity classification. Confirm acceptability against your application before progressing.
02
Specialty grade, niche use
This is a niche cycloparaffinic solvent. Most enquiries originate from industrial adhesive formulators, coating chemists and selected polymer applications where the cyclic structure delivers specific solvency that aliphatic alternatives do not. Outside these niches, simpler hexane or isoparaffinic options are usually more commercial.
03
Highly flammable, PG II
Flash point ~−19°C makes this material a Flam. Liq. 2 product, transported under UN3295 class 3 packing group II. Site handling, transport documentation and storage requirements must be confirmed from the current SDS before commercial or logistics discussion proceeds.
04
Availability is route-dependent
This is a specialty product type with limited European supply routes. Availability and lead time vary with allocation and demand. Early commercial validation, including confirmation that the route can support the requested specification and packaging, avoids the most common sources of delay.

Grade position

A naphthenic (cycloparaffinic) solvent not an aliphatic hexane and not a dearomatised D-cut

This material is structurally different from the aliphatic hydrocarbon grades elsewhere on this site. The dominant component is cyclohexane (CAS 110-82-7) at approximately 75 wt%. The remaining fraction includes other cyclics, n-alkanes and isoalkanes, with n-hexane content typically below 5 wt%. This is a UVCB substance (EC 926-605-8), with no single CAS for the mixture. The cyclic structure gives meaningfully different solvency behaviour from straight or branched-chain hydrocarbons of similar boiling range, which is the structural reason it is selected in adhesive and coating chemistry.

The aromatic content is essentially zero (~1 wt ppm). On that single parameter, this is one of the cleanest hydrocarbon fluids on this site. The trade-off is the regulatory load: five CLP classifications including Repr. 2 / H361f, transported as class 3 PG II. Compared to a dearomatised aliphatic hexane (also low aromatic, but typically without the H361f), the choice between the two is driven by whether the cycloparaffinic solvency of this material is needed for the specific application, and whether the H361f classification is acceptable in the buyer's regulatory framework.

At a glance

Technical snapshot typical properties, not guaranteed specifications

All values on this page are typical, indicative properties based on representative samples. They are not guaranteed sales specification limits. The current sales specification, which states guaranteed minimum and maximum values, must be requested and reviewed before any procurement or approval decision.

Cyclohexane~75 wt%Dominant component, drives solvency and regulatory profile.
Aromatic content~1 wt ppmEssentially aromatic-free, one of the cleanest on this site.
Flash point~−19°CHighly flammable, Flam. Liq. 2, UN3295 class 3 PG II.
CLP load5 + EUH066Includes Repr. 2 / H361f. Buyer assessment required.

Technical snapshot

Typical property data indicative only, current sales specification governs

These values are typical and indicative, not guaranteed. The actual current sales specification, with stated minimum and maximum limits, must be requested and reviewed before procurement or approval. All numerical values are prefixed with ~ to reflect their indicative nature.

Substance type
UVCB , cyclohexane-rich naphthenic
EC number
926-605-8
CAS number
No single CAS (UVCB substance)
Cyclohexane content (typical)
~75 wt%
n-Hexane content (typical)
<5 wt%
Appearance
Clear / transparent liquid
Aromatic content (typical)
~1 wt ppm
Density 15°C (typical)
~759 kg/m³
Flash point (typical, closed cup)
~−19°C
Initial boiling point (typical)
~78°C
Dry point (typical)
~83°C
Vapour pressure 20°C (typical)
~110 hPa (~83 mmHg)
Kinematic viscosity 20°C (typical)
~0.93 cSt
Auto-ignition temperature
~274°C
Aniline point (typical)
~37°C
Solubility in water
Negligible
CLP signal word
Danger
Transport (ADR/RID/IMDG/IATA)
UN3295, class 3, PG II
These are typical properties, not a sales specification. Typical values are indicative based on representative samples and are not guaranteed. The current sales specification, which contains the guaranteed minimum and maximum limits, must be requested during the quotation process.

For this material specifically: review the full SDS before commercial discussion. The five CLP classifications (Flam. Liq. 2, Asp. Tox. 1, STOT SE 3, Aquatic Chronic 2, Repr. 2 H361f) and the EUH066 supplemental warning have practical procurement, site handling and end-use implications. The H361f classification in particular requires informed buyer assessment for the intended application.

Regulatory context

Full CLP classification load and the H361f buyer-responsibility statement

This material carries five CLP classifications plus a supplemental EUH066 warning. The classification load is meaningfully heavier than for typical aliphatic hydrocarbon solvents in the same boiling range, and the Repr. 2 / H361f classification in particular has practical procurement implications.

CLP classification 1
Flam. Liq. 2 · H225
Highly flammable liquid and vapour. Flash point ~−19°C (closed cup). Site handling, storage and transport documentation must be confirmed from the current SDS before commercial discussion.
CLP classification 2
Asp. Tox. 1 · H304
May be fatal if swallowed and enters airways. Standard aspiration hazard for low-viscosity hydrocarbon liquids. Standard handling, PPE and ingestion-prevention controls apply.
CLP classification 3
STOT SE 3 · H336
May cause drowsiness or dizziness. Single exposure CNS effects from inhalation. Workplace ventilation and exposure controls per the SDS Section 8 recommendations.
CLP classification 4
Aquatic Chronic 2 · H411
Toxic to aquatic life with long lasting effects. Spill containment, drainage controls and waste-water management must reflect this. Marine pollutant mark applies for IMDG transport above 5 L.
CLP classification 5: Repr. 2 · H361f , Suspected of damaging fertility.

This classification originates from the cyclohexane component (the dominant ~75 wt% constituent) and is reflected in the SDS for the substance as supplied. The supplemental EUH066 warning (repeated exposure may cause skin dryness or cracking) also applies.

For procurement, this has practical implications: some buyers in regulated jurisdictions have internal restrictions on substances carrying any reproductive toxicity classification, regardless of category. Buyers in consumer product, food contact or regulated formulation contexts must assess whether H361f is acceptable for their intended end use before approving the substance.

Alcoris is not in a position to make that assessment on the buyer’s behalf. Suitability for the intended application must be assessed by the buyer, supported by full SDS review at the enquiry stage. Where there is doubt, an alternative grade without the H361f classification should be considered: a dearomatised aliphatic hexane or a heavy isoparaffinic may serve the same boiling-range or solvency role without this classification, depending on the specific application.
Transport classification: UN3295 · Hydrocarbons, liquid, n.o.s. · class 3 · packing group II · tunnel code D/E. The marine pollutant mark applies for IMDG shipments above 5 L. Full transport documentation is confirmed from the current SDS Section 14 at the time of supply.

Grade fit

When this material usually makes sense and when an alternative serves better

This material is selected when the cycloparaffinic structure of cyclohexane provides specific solvency behaviour the application needs, and when the H361f classification is acceptable in the buyer’s regulatory framework. Outside that combination, simpler aliphatic alternatives are usually more commercial.

01
Choose this material when
The application is an industrial adhesive, coating system, polymer process or specialty cleaning formulation where the cycloparaffinic structure of cyclohexane is the relevant solvency match. The H361f classification has been assessed and accepted for the intended end use.
02
Consider hexane instead when
An aliphatic C6 hydrocarbon serves the application equally well. Standard hexane grades typically do not carry the H361f classification and are commercially simpler. Note that hexane carries its own n-hexane regulatory considerations under different rules.
03
Consider isoparaffinics instead when
The application can use a branched-chain hydrocarbon. Light isoparaffinic grades typically have lower CLP classification load (no H361f), no aromatic content, and are non-DG packaged in some grades. Often the most regulatory-friendly alternative.
04
Always verify
Full SDS review (especially Section 2 and Section 14), application context for grade-fit confirmation, H361f acceptability in the buyer’s regulatory framework, and current sales specification. The product name alone is never sufficient justification for use.
Key distinction from aliphatic alternatives: the cyclic structure of cyclohexane gives this material different solvency behaviour from straight-chain hexane or branched isoparaffinic grades. Where this cycloparaffinic solvency is the technical requirement (typically in adhesive resin compatibility or specific coating chemistry), this material has a structural advantage. Where the requirement is just a low-aromatic C6 hydrocarbon, the aliphatic alternatives are usually more commercial and have a milder regulatory profile.
Request spec, SDS & availability

Applications

Where this material is typically used specialty cycloparaffinic chemistry

This is a niche specialty solvent. The most concrete commercial applications are listed below. Across all of them, the common factor is that the cycloparaffinic structure of cyclohexane provides solvency behaviour that aliphatic alternatives do not match equally well, and the buyer has assessed and accepted the H361f classification in the relevant regulatory framework.

Industrial adhesives
Adhesive formulation chemistry
The most established application. The cyclic structure of cyclohexane delivers specific solubility behaviour for certain adhesive resins (notably polychloroprene, certain rubber-based adhesives and specialty contact adhesives) where aliphatic hexane or isoparaffinic alternatives do not match. Some producers historically positioned this material as a possible aromatic-solvent (toluene) alternative in specific adhesive systems, but this framing is application-specific and does not generalise.
Coatings
Industrial coating and primer chemistry
Used in selected industrial coating and primer formulations where the cycloparaffinic solvency profile is part of the formulation recipe. Typically discussed for specialty coatings rather than mainstream paint chemistry, where aromatic solvent naphtha or aliphatic alternatives are usually more commercial.
Polymer processing
Polymer-related processing
Selected polymer-related applications where a high-purity cyclohexane-rich solvent is required as a process aid or carrier. The exceptional aromatic purity (~1 wt ppm) and narrow boiling range combined with the cyclic structure define the niche.
Cleaning
Specialty industrial cleaning
Specialty cleaning applications where the cycloparaffinic structure dissolves contaminants that aliphatic hexane does not handle as effectively. Niche use, typically in maintenance or precision cleaning of industrial equipment with specific contamination profiles.
Note on positioning: this type of material has historically been described in producer literature as a possible alternative to aromatic solvents (toluene, white spirit) in specific adhesive and coating formulations. This framing depends on the application’s tolerance for the H361f classification: in some regulated jurisdictions, replacing an aromatic solvent with a substance carrying H361f does not meaningfully improve the regulatory position. The substitution decision should be made on a per-application basis, not as a general rule.

Buyer checklist

What serious buyers check before sending an enquiry

For this material specifically, the regulatory and grade-fit questions come before pricing. Resolving the points below upfront saves a round of back-and-forth in the commercial discussion.

  • ◆
    Has the H361f classification been assessed against the intended end use? The Repr. 2 / H361f classification is the most consequential procurement question for this material. Some buyers in regulated jurisdictions have internal restrictions on substances carrying any reproductive toxicity classification. This must be resolved at the start, not after the SDS arrives.
  • ◆
    Has the full SDS been requested? Five CLP classifications + EUH066 + UN3295 class 3 PG II transport. The SDS is the document that governs site receiving, storage, transport documentation and end-use safety controls. Request it at the enquiry stage, not after a price is on the table.
  • ◆
    Is the cycloparaffinic structure actually needed for the application? This is a specialty grade. If the application can use an aliphatic hexane, an isoparaffinic or another low-aromatic alternative, those are usually more commercial. The cycloparaffinic structure must be the technical driver, not just preference.
  • ◆
    Has the current sales specification been requested? The values on this page are typical, indicative properties. The sales specification with stated minimum and maximum limits is the governing document for procurement, quality assurance and regulatory approval. Request it explicitly.
  • ◆
    Is the packaging and transport route practical for a Flam. Liq. 2 / PG II classification? ADR class 3 PG II requirements affect transport mode, packaging, labelling and handling costs. These shape the practicality and economics of bulk, IBC and drum supply for this material.
Useful adjacent discussions: buyers often compare this material with aliphatic hexane (similar boiling range, no H361f, simpler regulatory profile), light isoparaffinic grades (branched-chain, no H361f, often non-DG packaged in some grades), or aromatic solvent naphtha (a product type historically positioned to potentially replace these in some adhesive systems). The substitution decision is application-specific, not a general rule.

Why Alcoris

Why buyers involve Alcoris for this type of enquiry

This is a niche specialty product. A useful first response should clarify whether the substance fits the application and the regulatory framework, before progressing to price.

Editorial framing first
Honest grade and regulatory positioning
Producer literature sometimes positions this type of material as an aromatic-solvent replacement. This is application-specific and is not always the right framing once the H361f classification is on the table. We discuss the actual fit honestly, including when an alternative grade may serve better.
Documentation first
Full SDS and current spec together
For this material, the SDS (especially CLP classification load and transport classification) and the current sales specification both need to be on the table before a procurement discussion can progress. We aim to get both in the first response.
Independent routing
No bias toward selling the substance
Alcoris does not earn margin on the grade decision. If your application can be served by a simpler aliphatic hexane or an isoparaffinic without the H361f classification, we say so directly rather than route the enquiry to this material by default.

FAQ

Questions buyers ask before sending an enquiry

What is this material?
A cyclohexane-rich naphthenic (cycloparaffinic) hydrocarbon fluid in the C6 range. It is a UVCB substance (EC 926-605-8) with no single CAS, composed primarily of cyclohexane (~75 wt%), with smaller fractions of n-alkanes, isoalkanes and other cyclics. The aromatic content is essentially zero (~1 wt ppm). Used in industrial adhesives, coating chemistry, cleaning and selected polymer-related applications. Carries a notable CLP load including a Repr. 2 / H361f fertility warning.
How does this material differ from regular hexane or heptane?
Hexane and heptane are aliphatic (open-chain) hydrocarbons. This material is naphthenic (cyclic), composed primarily of cyclohexane. The cyclic structure gives different solvency behaviour: stronger interaction with certain resins and polymers, particularly relevant for adhesive and coating chemistry. Aromatic content is essentially zero (~1 ppm) versus typical limits of 0.001–0.005 wt% in dearomatised hexane and heptane grades. Regulatory profile is also different: this material carries the Repr. 2 / H361f classification which is not present in standard hexane or heptane.
What CLP classification does this material carry?
It carries five CLP classifications plus a supplemental warning: Flam. Liq. 2 (H225, highly flammable liquid and vapour), Asp. Tox. 1 (H304, may be fatal if swallowed and enters airways), STOT SE 3 (H336, may cause drowsiness or dizziness), Aquatic Chronic 2 (H411, toxic to aquatic life with long lasting effects), and Repr. 2 (H361f, suspected of damaging fertility). The supplemental EUH066 warning applies for repeated exposure (skin dryness/cracking). Signal word: Danger. The H361f classification is the most consequential for procurement decisions and requires informed buyer assessment, particularly for consumer-facing or regulated formulations.
Is this material classified as dangerous goods for transport?
Yes. It is transported under UN3295 (Hydrocarbons, liquid, n.o.s.), transport hazard class 3, packing group II, across ADR/RID, IMDG and IATA. Tunnel code D/E. The flash point of approximately −19°C makes this a highly flammable liquid requiring full class 3 dangerous goods handling. The marine pollutant mark applies for shipments above 5 L.
Why is the H361f fertility warning relevant for buyers?
The Repr. 2 / H361f classification means the substance is suspected of damaging fertility. This classification originates from the cyclohexane component and is reflected in the SDS for the material as supplied. Some buyers in regulated jurisdictions have internal restrictions on substances carrying any reproductive toxicity classification, regardless of category. Buyers in consumer product, food contact or regulated formulation contexts must assess whether H361f is acceptable for their intended end use before approving the substance. Alcoris is not in a position to make that assessment on the buyer’s behalf.
What is this material typically used for?
The most common applications are industrial adhesive formulations (where the cycloparaffinic structure provides specific solvency behaviour), coating chemistry (industrial coatings, primers, specialty systems), cleaning formulations, and polymer-related processing. The product type has historically been positioned by some producers as a possible aromatic-solvent replacement (toluene, white spirit) in specific formulations, but this framing depends on the application's tolerance for the H361f classification and is not a generalised substitution recommendation.
Is this equivalent to cyclohexane-rich naphthenic solvents on the market?
Yes. This product corresponds to the same type of cyclohexane-rich naphthenic hydrocarbon fluid in this market category. Alcoris routes enquiries to suppliers in the network for equivalent material from multiple producers; exact specifications may vary depending on source and production route, and are confirmed at the time of quotation by the relevant supplier.

Send an enquiry

Cyclohexane-rich naphthenic solvent enquiry
for current specification, SDS, transport documentation and route review.

For this material specifically, useful enquiries state the intended application (adhesive, coating, polymer, cleaning), confirm that the H361f classification has been assessed against the application, and include destination and approximate volume. Full SDS review and the current sales specification drive approval timelines for this grade.

◆Confirm that the H361f Repr. 2 classification has been assessed against the intended application before requesting commercial terms.
◆Request the current sales specification alongside the full SDS, typical data is not a substitute for the guaranteed limits.
◆Include destination, approximate volume and packaging preference for a realistic first answer on route and pricing.
◆State application context (adhesive, coating, polymer, cleaning) so grade-fit can be confirmed in the first response.

All offers are subject to unsold and subject to final confirmation. Specification, packaging format, availability, timing and pricing are always confirmed at quotation stage based on the current supply route and market situation. Buyers remain responsible for checking suitability for the intended use, including assessment of the H361f classification, and for compliance with applicable regulations.

Useful enquiries include: delivery country, rough volume, packaging preference, intended application context, confirmation that the H361f classification has been assessed, and whether you need specification, SDS or pricing first.

Response same day during EU working hours.

No obligation, purely commercial and technical validation.
Contact details are used solely to respond to this enquiry.

Enquiry received. A commercial response will follow.
Something went wrong while sending the enquiry. Please try again or email enquiries@alcoris.eu directly.

Related

If your application allows alternatives without the H361f classification, the following grades are commonly evaluated alongside cyclohexane-rich naphthenic solvents:

Aliphatic C6
Hexane ↗
Aliphatic n-hexane / hexane mixture, similar boiling range (~66–69°C). Different solvency profile (open-chain vs cyclic). No H361f classification, but carries n-hexane-specific regulatory considerations.
Aliphatic C7
Heptane dearomatised ↗
Slightly heavier dearomatised aliphatic (~94–99°C boiling range, flash ~−6°C). Aliphatic structure, no H361f classification. Often the regulatory-friendly alternative for adhesive and coating applications.
Branched aliphatic
Light isoparaffinic ↗
Branched-chain aliphatic family. Very low aromatic content, no H361f classification, some grades are non-DG packaged. Often the simplest regulatory alternative when a low-aromatic light hydrocarbon is the main requirement.
Family overview
Hydrocarbon solvents overview ↗
Top-level overview of dearomatised hydrocarbons, SBP cuts, white spirit, light aliphatics and naphthenic specialties across European supply markets.
Request spec & SDS