6-Chloro-2,4-Dinitroaniline
6-Chloro-2,4-dinitroaniline combines a chlorine and two nitro groups on one aniline ring — a strongly electron-deficient intermediate used across azo dye and pigment manufacture, agrochemical intermediate synthesis, and specialty applications including wastewater-treatment chemistry.
Chelora Chemicals supplies this grade to dye manufacturers, agrochemical formulators and specialty chemical producers worldwide, in bags, drums and container quantities, with a batch COA and GHS safety data sheet on every consignment.
Product identity
- CAS Number
- 3531-19-9
- IUPAC name
- 2-Chloro-4,6-dinitroaniline
- Molecular formula
- C6H4ClN3O4
- Molecular weight
- 217.57 g/mol
- MDL number
- MFCD00007147
- SMILES
- Nc1c(Cl)cc([N+](=O)[O-])cc1[N+](=O)[O-]
- Common trade name
- 6C24DNA
- HS Code
- 2921 42*
* Confirm the exact HS heading with your customs broker — classification of chlorodinitroaniline derivatives varies between destination tariffs.
What 6-Chloro-2,4-Dinitroaniline is used for
6-Chloro-2,4-dinitroaniline carries one chlorine and two nitro groups on an aniline ring. That combination makes it one of the more strongly electron-withdrawing, electrophilic aromatic amines in our range — a molecule whose reactivity profile sits closer to the nitroaromatic family than to a routine chloroaniline. The heavy substitution gives it a distinctly higher melting point than a mono-substituted aniline and a pronounced yellow-to-orange colour of its own.
In practice it is bought either to be built directly into a dye or pigment chromophore, used as an agrochemical intermediate, or supplied into specialty applications such as wastewater-treatment chemistry, where its reactive functional groups are put to work outside conventional colour chemistry.
Why the substitution pattern matters
- Electron-poor ring. The chlorine and two nitro groups together deactivate the ring strongly, changing both the reactivity of the amine and the stability of the finished chromophore compared with a mono-nitro or mono-chloro grade.
- Distinct colour character. Like other dinitroanilines, this molecule contributes inherent colour before any coupling step, which is part of why it is prized in certain dye and pigment routes.
- Multiple reactive handles. The chlorine, the amine and the two nitro groups each offer a potential site for further chemistry, which is why the molecule shows up across dye, agrochemical and specialty synthesis rather than a single narrow outlet.
If your process calls for a related dinitroaniline or a different chloronitro substitution pattern, send us the CAS number and we will source it from our wider nitroaromatic intermediate range rather than assume this grade is an automatic substitute.
Appearance and handling character
6-Chloro-2,4-dinitroaniline ships as a light yellow to orange, sometimes brown, powder or crystalline solid melting around 157 °C. It has low water solubility and dissolves more readily in common organic solvents. Read the safety section below before planning handling — the compound has been associated with toxicity and environmental persistence in the reference literature, and some sources note relevance to energetic-materials research given its electron-deficient aromatic structure, so treat it with the same care as any classified nitroaromatic solid.
| Parameter | Typical value |
|---|---|
| Appearance | Yellow to orange powder |
| Assay | 97.5% min |
| Melting range | 155 – 159 °C |
| Infrared spectrum | Conforms to structure |
| Moisture | 0.5% max |
| Non-volatile residue | Reported per batch |
Important: the figures above are indicative of commercial grade material and are offered for planning only. The batch certificate of analysis is the governing document. If your process demands a tighter assay or a specific colour ceiling, send us the specification and we will quote against it rather than against a generic grade.
| Property | Value |
|---|---|
| Physical state | Crystalline solid / powder at ambient |
| Melting point | ≈ 157 – 159 °C |
| Water solubility | Low |
| Organic solubility | Soluble in common organic solvents |
| Colour character | Chromophoric — inherent yellow/orange colour |
| Ring character | Strongly electron-deficient (Cl + 2×NO₂) |
Physical constants compiled from public reference data for CAS 3531-19-9 and rounded for readability. Treat them as orientation, not as a specification.
Where our customers put this molecule to work
6-Chloro-2,4-dinitroaniline's volume spreads across dye and pigment manufacture, agrochemical intermediate synthesis, and a handful of specialty applications outside colour chemistry.
Azo dyes & pigments
Built directly into azo dye and pigment chromophores, where the chloro-dinitro substitution pattern contributes both colour strength and stability to the finished product.
- Azo dye and pigment synthesis
- Isomer and colour purity shows up directly in shade
- See our full dye intermediate range
Agrochemical intermediates
The reactive chloro, amino and dinitro functionality on this ring supports its use as a building block in the synthesis of certain herbicide and insecticide active ingredients and their precursors.
- Herbicide & insecticide intermediate synthesis
- See our agrochemical intermediate range
Wastewater-treatment chemistry
This compound's reactive chemistry has a recognised role as a wastewater-treatment agent, reacting with target species in industrial effluent streams as part of a specialised treatment process.
- Specialty treatment-chemical intermediate
- Supplied per your process specification
Research & specialty synthesis
The strongly electron-deficient aromatic ring has drawn research interest for photochromic compounds and other electron-deficient aromatic chemistry, beyond its established dye and agrochemical role.
- Research and process-development quantities
- Technical desk support on new routes
- Available in trial and laboratory quantities
Pharmaceutical & fine-chemical intermediates
The multiply-substituted ring offers several synthetic handles for pharmaceutical and fine-chemical intermediate routes that need a chlorinated, nitro-activated aniline building block.
- Custom amide, urea and coupling chemistry
- GMP-adjacent documentation available on request
Contract & scheduled supply
Dye, agrochemical and specialty-treatment plants run to production campaign, not calendar month. We hold inventory and release it against your production plan rather than in one shipment.
- Annual contracts with scheduled call-off
- Price held across the contract period
- Second source held in reserve
How we supply 6-Chloro-2,4-Dinitroaniline
Chelora Chemicals is a supplier and sourcing partner, not a manufacturer. We own no chlorination or nitration plant — and for a specialised, multiply-substituted intermediate like this one, that independence works in your favour. We are never obliged to push you whatever a captive unit happens to be running that month.
Instead we place your order with whichever qualified producer best matches your assay, your colour tolerance, your price point and your delivery window.
We keep a second qualified source on this line, so a plant disruption does not stall your production schedule.
- Specification read against the CAS first. We confirm you need 3531-19-9 and not a related chloronitroaniline or dinitroaniline before we quote a price.
- Batch COA shared before dispatch. You approve the assay, melting range and colour against your own spec while the material is still in our warehouse.
- Hazard status stated up front. We say what the classification is at enquiry stage — not in the small print of a document pack that arrives with the goods.
- Pre-shipment samples for qualification. New account or new source, your R&D team runs a lab batch before the full quantity ever moves.
- Export machinery handled in-house. Hazard classification, packing, labelling, freight booking and customs paperwork are ours to manage.
- Consolidation onto one bill of lading. Ship this grade alongside other intermediates from our range — one invoice, one shipment, one counterparty.
Packed the way your plant receives it
Pack format drives your landed cost and your handling effort — and for a classified nitroaromatic solid, it also drives operator exposure and transport compliance. Tell us how it will be charged at your end and we will quote the format that suits your operation.
Multi-wall paper & PE bags
Laminated multi-wall bags with an inner liner, palletised and shrink-wrapped. The default for LCL movements and for plants charging batch-wise by hand.
Fibre & HDPE drums
UN-certified drums with liner for longer sea transits, meeting the packing requirements for a classified nitroaromatic solid.
Jumbo / FIBC bags
Bulk bags with liner for high-volume users with mechanical charging, subject to your site's dangerous-goods storage limits.
Samples & trial packs
Laboratory samples and pilot quantities dispatched by courier so your R&D team can qualify the grade before committing to campaign volume.
Incoterms to suit you
Quoted on the Incoterm your purchasing team works to. Ocean, air and road freight arranged end-to-end with documentation filed before booking.
Campaign despatch
Dye and agrochemical production runs to campaign. We hold contracted tonnage and release it against your production calendar instead of landing it all at once.
Handle it as a classified nitroaromatic solid
6-Chloro-2,4-dinitroaniline is a nitroaromatic amine associated in the reference literature with toxicity and environmental persistence, and some multiply-nitrated aromatic compounds of this general type carry combustible or energetic-materials considerations. The summary below is orientation only — the safety data sheet supplied with your consignment is the authoritative document and should govern your risk assessment, PPE selection, storage planning and emergency response without exception.
Points to plan around
ToxicityToxic by ingestion and skin contact, consistent with other chloronitroaniline compounds.PersistenceReference sources note environmental persistence — treat spills and waste as regulated chemical waste.ReactivityMultiply-nitrated aromatics can carry combustible or shock-sensitivity considerations depending on grade and purity — confirm handling limits against your specific SDS.
Always read the SDS issued with your specific batch as the authoritative document for classification, handling limits and storage-quantity thresholds — do not rely on this summary alone for a compound in this reactivity class.
Spill & emergency orientation
Plan your response before the pallet arrives, not after a bag splits. The points below are orientation for your emergency planners — sections 4, 5, 6 and 7 of the SDS are the authoritative instructions and should be posted at the point of use.
- Keep away from ignition sources, friction and shock. Multiply-nitrated aromatics warrant this precaution even where the SDS classifies the material as a routine combustible solid rather than an explosive.
- Sweep, do not hose. Collect spilled solid mechanically into a labelled container; never wash it to a drain.
- Suppress dust. Dry sweeping of a fine solid generates an inhalable aerosol — use vacuum collection or dampen carefully in line with the SDS.
- Assume skin absorption and remove contaminated clothing immediately, as standard practice for a chloronitroaniline compound.
- Have the SDS with the casualty. The treating clinician needs the product identity and CAS number in hand.
Storage
- Cool, dry, well-ventilated store, away from direct sunlight, heat sources and any ignition source.
- Keep containers tightly closed and segregated from oxidising agents, reducing agents, strong acids and strong bases.
- Limit stored quantity per your site's dangerous-goods storage thresholds for nitroaromatic solids, and confirm the applicable limit with your EHS function before the first large delivery.
- Shelf life is typically 12–24 months in sealed original packing under these conditions. Re-assay before use after long storage.
Handling & PPE
- Design exposure out, do not manage it down. Closed transfer and mechanical charging first, ventilation second, PPE last.
- Skin protection is the priority. Chemical-resistant gloves and coveralls, not just splash protection.
- Respiratory protection where dust may be generated, per your own exposure assessment.
- Avoid friction, grinding or impact on dry accumulated material — a standard precaution across the multiply-nitrated aromatic family.
- Never discharge to drain or watercourse. Collect spills as solid waste and dispose of them as regulated chemical waste.
Transport
6-Chloro-2,4-dinitroaniline is typically classified as regulated cargo. We confirm the current classification for your specific consignment, apply UN-approved packaging and labelling, and file the dangerous-goods declaration before the booking is made — ask us for the current DG paperwork when you plan the shipment.
What travels with every consignment
A chemical shipment is only as good as the file that travels with it. Verifying what the source plant sends is precisely the work you are buying from a supplier.
Certificate of Analysis
Batch-specific assay, melting range, appearance and moisture — checked against your purchase specification before we release the goods.
GHS Safety Data Sheet
Full 16-section SDS in GHS format covering hazards, exposure controls, handling, storage, spill response, toxicology and disposal — issued in the language your destination requires.
Dangerous Goods Declaration
Classification confirmed for your destination, with correctly marked and labelled packaging and the transport declaration prepared before the container is booked.
Certificate of Origin
Chamber-attested where required, plus preferential-origin forms where a trade agreement gives your import duty relief at the destination.
Third-party inspection
SGS, Intertek or Bureau Veritas sampling and inspection arranged on request before loading, giving you independent verification of what actually ships.
Retained & pre-shipment samples
Pre-shipment samples carry the same COA as the commercial lot, so what your laboratory qualifies is exactly what arrives. Retention samples held against the batch.
What actually moves the price of this intermediate
6-Chloro-2,4-dinitroaniline is not a commodity with a screen price. Knowing what drives the quote helps you time a purchase and read whether an offer is realistic.
Multiple demand pools
Dye, agrochemical and specialty-treatment demand pull on the same molecule at different times, so the market rarely goes quiet the way a single-outlet intermediate does.
- Quote early for campaign tonnage
- Spot buying at peak costs materially more
- Contracted call-off smooths the exposure
Multi-step synthesis cost
Building a chloro-dinitroaniline requires a sequenced chlorination and nitration route, which raises the production cost base above a simpler, single-step aniline.
- More processing steps than a mono-substituted grade
- Fewer qualified producers globally
- We flag feedstock-driven moves in the quote
Regulatory handling cost
The classified hazard profile raises the compliance cost of producing, storing and moving this material. That cost sits inside the price.
- Handling obligations vary by jurisdiction
- We check destination rules before quoting
Pack format
Cost per kilo falls from 25 kg bags to drums to jumbo bags — and drums also meet UN packaging-group requirements more straightforwardly than bagged material.
- Small bags carry the highest packing cost
- Drums are the common choice for this hazard class
Freight & DG surcharges
Regulated cargo carries a hazardous surcharge and tighter space than general cargo. Destination and Incoterm move landed cost as much as the ex-works price does.
- Compare on landed cost, not ex-works
- We quote FOB, CIF, CFR or DDP as you prefer
Source availability
A specialised intermediate like this one is produced by fewer plants than a commodity aniline. Single-sourced buyers feel a disruption hardest.
- We hold a second qualified source on this line
- Ask us about dual-source contracts
From enquiry to delivered pallet
Send the specification
Product name or CAS 3531-19-9, the assay and colour limits you work to, quantity, pack preference and destination port.
Receive a firm quote
Pricing, lead time, packing and Incoterm confirmed in writing within 24 hours — our sourcing desk is staffed around the clock.
Qualify and approve
Sample dispatched if you are qualifying a new source. Batch COA shared for your approval before the material is released.
Ship and track
DG classification filed, freight booked, export documents issued, and the consignment tracked through transit and clearance to your plant.
Often bought alongside this grade
Consolidate several intermediates onto one shipment and one invoice. Browse our full range of nitroaromatic and aniline intermediates — our sourcing desk will confirm exact availability and specification against the CAS number you need.
What buyers ask us about 6-Chloro-2,4-Dinitroaniline
Is this an explosive?
Can I use a different chloronitroaniline isomer instead?
What purity do you normally supply?
What is the minimum order quantity?
How long does delivery take?
How should we store it, and what is the shelf life?
Is this a dangerous good? What paperwork comes with it?
- Batch certificate of analysis
- GHS-format safety data sheet
- Dangerous-goods declaration with the applicable classification
- Commercial invoice, packing list and bill of lading or airway bill
- Certificate of origin and any destination-specific forms
Do you supply to my country?
Do you manufacture this yourself?
Can you hold stock against a production plan?
Request pricing on 6-Chloro-2,4-Dinitroaniline
Send your required assay, quantity, pack format and destination port. Our sourcing desk is available 24 hours a day, 7 days a week, and comes back with pricing, lead time and packing options — whether that is a single trial bag or a contracted container programme for the year.