D140 Dearomatized Solvent · High-Boiling Hydrocarbon Fluid · European B2B Sourcing
D140 is the heaviest grade in the dearomatized D-cut family, a C16–C20 hydrocarbon fluid with flash point typically ~min 129°C, viscosity ~3.50–5.00 mm²/s at 40°C and distillation range typically ~272°C to ~320°C. Selected when lower D-cuts evaporate too quickly, when very high boiling range is required, or when transport simplicity matters: D140 is typically not regulated as dangerous goods in packaged form.
Compared to lower D-cuts, D140 has a controlled but not ultra-low aromatic content (typically up to 2 wt%, depending on source). For applications where ultra-low aromatic specification is essential, a lighter D-grade should be evaluated instead.
Used by mastics and sealant formulators, ink houses, metalworking fluid blenders, polymer processors and mould-release specialists across Europe to validate supply, pricing and grade fit before internal approval.
Typical response from the relevant supplier in the network.
For lighter options in the same family, see the D120 page (~min 110°C flash, IBP ~251°C), the D100 page (~min 101°C flash), or the D-cuts grade selection guide.
Fast commercial starting point
What you typically want from a D140 enquiry
A good first response should clarify whether the application fits D140 (not all heavy-fluid applications do), confirm transport classification for your route, and confirm current sales specification with respect to aromatic content.
At a glance
Product fit
D140 is the heaviest grade in the dearomatized D-cut family. The indicative specification points to a minimum flash point of ~129°C, an initial boiling point of ~272°C, a final boiling point of ~320°C and a viscosity at 40°C between ~3.50 and ~5.00 mm²/s. D140 is selected when lower D-cuts evaporate too quickly, when a very high boiling range is required, when transport simplicity is a commercial priority (D140 is typically non-DG packaged), or when a low CLP-classification heavy fluid is preferred over multi-classification lighter D-cuts.
In practice, most wrong selections at this end of the family come from underestimating the aromatic content (~up to 2 wt%, much higher than lighter D-cuts), or from selecting D140 when a heavy isoparaffinic would actually be the better fit. Validate both before approval.
Choose D140 when
You need a very high boiling range and slow evaporation profile, where D120 (~min 110°C flash) does not give enough headroom. Also when transport simplicity matters: D140 is typically not regulated as dangerous goods in packaged form.
Think twice when
Your application requires ultra-low aromatic content. The lighter D-cuts (D60–D120) typically carry much tighter aromatic specifications. D120 is often the better starting point if a high flash point is needed but aromatic content matters.
Compare with isoparaffinic
For applications driven by viscosity, slow evaporation and very low CLP load, a heavy isoparaffinic grade may be a competing option. Heavy isoparaffinics typically also non-DG packaged, with similar boiling profiles but different cost and aromatic structure.
Always verify
Final fit depends on formulation, process, compliance, viscosity requirements and the actual specification being quoted. D140 should never be approved on grade name alone, particularly given the higher aromatic content allowance compared to lighter D-cuts.
Technical snapshot
A usable technical starting point. Not a substitute for the current document shared during quotation, but detailed enough to help a procurement team decide whether the discussion is worth opening.
Grade context
This is not a producer specification table. It is a commercial buying guide to help frame whether D140 is the right discussion for your requirement.
| Decision point | D140 | D120 | D100 |
|---|---|---|---|
| Typical buying logic | Heaviest, very slow evaporationWhen D120 evaporates too quickly, when transport simplicity matters (non-DG packaged), or when the lowest CLP load is preferred. | Heaviest in ultra-low aromatic rangeWhen a heavy fluid is needed but ultra-low aromatic content (<0.1 wt%) is essential. | High flash, ultra-low aromaticWhen a flash point above ~100°C is required but D120's heavier boiling range is not needed. |
| Flash-point direction | Highest in the family; indicative spec ~min 129°C. | Indicative spec ~min 110°C. | Indicative spec ~min 101°C. |
| Aromatic content | Up to ~2 wt% (controlled but not ultra-low). | Typically <0.1 wt% (ultra-low). | Typically <0.1 wt% (ultra-low). |
| Viscosity | ~3.50–5.00 mm²/s at 40°C. | ~3.60–5.50 mm²/s at 25°C, comparable. | Lighter, check at quotation for the specific grade. |
| Boiling range | ~272–320°C. | ~251–300°C. | ~230–270°C. |
| Transport (ADR/RID/IMDG/IATA) | Typically not regulated as DG in packaged form. | Typically not regulated as DG in packaged form. | Class 3 PG III applies for some routes; verify per supply. |
| CLP classification load | 1 classification (Asp. Tox. 1 + EUH066). | Typically 1–2 classifications. | Typically 2–3 classifications. |
| Typical buyer question | "Does the application allow up to 2 wt% aromatics in exchange for non-DG status and very slow evaporation?" | "Do we need ultra-low aromatic content, and is ~110°C minimum flash sufficient?" | "Is ~101°C flash sufficient with ultra-low aromatic content?" |
For a broader grade-selection guide, see Which D-cut grade? For comparison with isoparaffinic alternatives, see the isoparaffinic solvents overview.
Applications
D140 is selected for applications where lower D-cuts evaporate too quickly, where a controlled aromatic content (up to ~2 wt%) is acceptable, and where transport simplicity (non-DG packaged) is a commercial priority. Application suitability is the buyer’s responsibility to verify against current sales specification.
Mastics & sealants
Open-time control in mastic and sealant systems
The very high boiling range and slow evaporation profile of D140 are selected in mastic and sealant formulations where extended open time and controlled volatile release are required during cure.
Inks
Slow-drying ink systems
Used in printing-ink formulations where slow drying behaviour is required by the press environment or substrate. The high flash point also reduces fire-safety constraints in some press settings compared to lighter D-cuts.
Metalworking
Metalworking fluids and process oils
The combination of high flash point, defined viscosity (~3.50–5.00 mm²/s at 40°C) and dearomatised character makes D140 relevant in metalworking fluid base or process-oil formulations where slow evaporation and low CLP load are both procurement requirements.
Polymer processing
Polymer carrier and process fluid
Selected in polymer processing applications where a heavy, slow-evaporating, low-CLP-load hydrocarbon carrier is required. The non-DG transport status simplifies internal logistics for repeat supply.
Mould release
High-temperature release-agent systems
Relevant where mould temperatures or site safety rules require a flash point well above 100°C and a heavier carrier than D120 provides. The high boiling range minimises premature volatilisation in heated processes.
Concrete demoulding
Concrete demoulding fluids
Used in concrete demoulding fluid formulations where slow evaporation, controlled wetting and the low CLP profile of D140 fit the construction site application better than the lighter D-cuts.
Agrochemicals
Agrochemical formulation carrier
Used as a carrier or diluent in some agrochemical formulations where the slow evaporation profile and controlled aromatic content support persistence and efficacy on application.
General
General industrial heavy-fluid sourcing
Also relevant for distributors and formulators who need a reliable European sourcing route for the heaviest dearomatised D-cut, where the combination of non-DG status, low CLP load and high boiling range is the selection driver.
Buying checklist
The fastest route to a good D140 decision is to confirm the aromatic content tolerance, check viscosity and boiling range fit against the application, and confirm transport status for the supply route before going deep into price discussions.
D140 has a different commercial profile from the lighter D-cuts: the high flash point and non-DG transport status are advantages, but the controlled (rather than ultra-low) aromatic content is a structural difference that buyers must validate against application requirements.
Supply logic
D140 has a structural commercial advantage over the lighter D-cuts: because it is typically not regulated as dangerous goods in packaged form, drum and IBC handling are simpler and recurring transport documentation is reduced.
Bulk tanker
Usually the most economical route for larger industrial demand and recurring consumption. Best when the site is equipped for unloading and the requirement is commercially large enough to justify tanker logistics.
IBC supply
Often the most attractive option for D140 specifically: the non-DG transport status simplifies IBC handling considerably compared to lighter D-cuts which require class 3 packaging compliance. Common for mid-range volumes and qualification work.
Drums
Drum supply is materially simpler for D140 than for the lighter D-cuts. The non-DG status removes the dangerous goods labelling and packaging requirements that apply to D40–D80. Useful for smaller volumes, fragmented demand or sites where drums are the preferred unit.
FAQ
What is D140 usually used for?
D140 is the heaviest commercial grade in the dearomatised D-cut family. It is commonly discussed for mastics and sealants (open-time control), printing inks (slow-drying systems), metalworking fluids, polymer processing, mould release, agrochemical formulations and concrete demoulding, where a very high boiling range and very slow evaporation profile are required.
How is D140 different from D100 or D120?
D140 sits beyond D120 in the family. The boiling range is typically ~272–320°C versus ~251–300°C for D120 and ~230–270°C for D100. Flash point typically ~129°C for D140 versus ~110°C for D120 and ~101°C for D100. Aromatic content allowance up to ~2 wt% for D140 versus typically much lower (<0.1 wt%) for the lighter D-cuts.
Is D140 classified as dangerous goods for transport?
Typically no. The supplied SDS for D140 indicates it is not regulated under ADR, RID, IMDG or IATA in packaged form, due to the very high flash point (~129°C) being well above the dangerous goods threshold. This removes class 3 transport classification entirely. Final transport status is confirmed against the supplier SDS for the specific batch.
What is the CLP classification of D140?
Typically a single CLP classification: Asp. Tox. 1 (H304, may be fatal if swallowed and enters airways), with EUH066 supplemental warning (repeated exposure may cause skin dryness or cracking). Signal word: Danger. This is a notably lighter regulatory profile than the lighter D-cuts (D40–D100) which typically carry multiple CLP classifications including Aquatic Chronic 2.
What aromatic content should buyers expect from D140?
A typical sales specification allows up to ~2 wt% aromatics. This is meaningfully higher than the ultra-low aromatic specifications of D60 to D120 (typically <0.1 wt%). For applications where ultra-low aromatic content is a requirement, a lighter D-grade should be considered. For applications driven primarily by high boiling range, slow evaporation and viscosity, the controlled but not ultra-low aromatic content of D140 is acceptable.
Can D140 be supplied in bulk, IBC and drums?
Yes, depending on volume, route and current supply position. Because D140 is not regulated as dangerous goods in packaged form, drum and IBC handling are commercially simpler than for the lighter D-cuts where class 3 packaging requirements apply.
Is D140 the same from every supplier?
No. D140 refers to a recognisable grade band (C16–C20 dearomatised hydrocarbon, EC 919-029-3, UVCB substance with no single CAS), but exact aromatic content, viscosity, distillation behaviour and documentation can vary by source and supply route. Always review the current sales specification for the quoted material.
Do you provide SDS and current specification?
Yes. Current sales specification and Safety Data Sheet can be shared during the quotation process, subject to the actual supply route and available producer documentation.
Send an enquiry
A complete enquiry allows a commercially realistic answer from the relevant supplier in the network, including confirmation of aromatic content for the actual batch, transport status for the supply route, and whether supply is actually possible under current market conditions.
No-obligation enquiry, used by buyers to validate price, availability and grade fit before committing internally.
Industrial B2B enquiries only, typical volumes start from ~5 MT and above.
If you are comparing D140 with D120, a heavy isoparaffinic, or a process oil, it is usually more efficient to validate pricing and grade fit early before investing further in technical approval.
All offers are subject to availability and subject to final confirmation. Specification, packaging format, availability, timing and pricing are confirmed at quotation stage based on the current supply route. Buyers remain responsible for checking suitability for the intended use and for compliance with applicable regulations.
Enquiry received.
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