2,6-Dichloro-4-Nitroaniline
2,6-Dichloro-4-Nitroaniline is best known by its common name Dichloran — a broad-spectrum dicarboximide-class fungicide used on fruit, vegetables and ornamentals, and also a dye and pigment intermediate in its own right. The symmetric 2,6-dichloro substitution pattern, with the nitro group para to the amine, gives a stable, sterically distinctive molecule.
Chelora Chemicals supplies this grade to agrochemical formulators, dye and pigment manufacturers, and pharmaceutical intermediate producers worldwide, in bags and drums, with a batch COA and GHS safety data sheet on every consignment.
Product identity
- CAS Number
- 99-30-9
- IUPAC name
- 2,6-Dichloro-4-nitroaniline
- Common name
- Dichloran (DCNA)
- Molecular formula
- C6H4Cl2N2O2
- Molecular weight
- 207.01 g/mol
- EC / EINECS
- 202-746-4
- MDL number
- MFCD00007677
- SMILES
- Nc1c(Cl)cc([N+](=O)[O-])cc1Cl
Note: if your end use is as an agricultural active ingredient, confirm your local plant-protection product registration status with us at enquiry stage — technical-grade Dichloran and formulated fungicide product are regulated differently in most jurisdictions.
What 2,6-Dichloro-4-Nitroaniline is used for
This compound has two well-established identities. Under the common name Dichloran (also written DCNA, and sold historically under trade names including Botran and Allisan), it is a dicarboximide-class contact fungicide used to control Botrytis, Rhizopus, Sclerotinia and other storage and field fungal pathogens on crops such as celery, lettuce, stone fruit and grapes. Away from crop protection, the same molecule — with the same CAS number — is used as a dye and pigment intermediate, most notably as a diazo component for disperse dyes used on synthetic textile fibres.
Structurally, the symmetric placement of the two chlorines ortho to the amine, with the nitro group para, gives a molecule that is sterically distinctive: both positions adjacent to the nitrogen are blocked by chlorine, which affects both its biological activity as a fungicide and its behaviour as a diazo component in dye chemistry.
Which use are you buying for?
Tell us your intended end use at enquiry stage. Agricultural end uses in most jurisdictions require the material to originate from a registered plant-protection product source and may require an end-use declaration; dye, pigment and general industrial chemical uses typically do not carry that same registration requirement. We confirm the correct regulatory pathway before quoting rather than after you have placed the order.
We supply the wider family of dichloronitroanilines used in dye, pigment and agrochemical synthesis — see the full intermediate range.
Appearance and handling character
Dichloran ships as a yellow crystalline solid or powder, essentially odourless, melting in the region of 190–192 °C — well above ambient, so it remains a stable solid through ordinary storage and transport. It is very poorly soluble in water (a few milligrams per litre) and only slightly soluble in most organic solvents, which is characteristic of many dicarboximide-type fungicide actives. Suppliers commonly recommend cool storage, in the region of 0–6 °C, to preserve the material's long-term stability, though it is chemically robust at ambient temperature for normal handling and transport durations.
| Parameter | Typical value |
|---|---|
| Appearance | Yellow crystalline solid / powder |
| Assay | 94.0% min (technical); higher for dye/pigment grade |
| Melting range | 184 – 192 °C |
| Moisture | Reported per batch |
| Related-substance limits | Reported per batch |
| Insolubles / 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. Agricultural-active and dye-intermediate buyers typically specify differently — tell us your end use and we will quote to the appropriate grade.
| Property | Value |
|---|---|
| Physical state | Crystalline solid at ambient, odourless |
| Melting point | ≈ 190 – 192 °C |
| Boiling point | ≈ 130 °C @ 2 mmHg (reduced pressure) |
| Relative density | ≈ 1.62 |
| Water solubility | ≈ 6 mg/L — very poorly soluble |
| Recommended storage temp. | 0 – 6 °C for long-term stability |
| Vapour pressure | Very low; negligible volatility |
Physical constants compiled from public reference data for CAS 99-30-9 and rounded for readability. Treat them as orientation, not as a specification.
Where our customers put this molecule to work
Few intermediates in our range have this clean a split between two genuinely separate industries — crop protection and colour chemistry — built on exactly the same molecule.
Dichloran fungicide manufacture
As Dichloran, this compound is formulated into fungicide products used against grey mould (Botrytis), soft rots and other storage and field pathogens on celery, lettuce, stone fruit, table grapes and ornamentals. It is applied both pre- and post-harvest in some markets.
- Dicarboximide-class contact fungicide
- Registration status confirmed before quoting
- Technical-grade material for formulation
Disperse dyes for synthetic fibres
Diazotised and coupled, this molecule is a diazo component in several disperse dye structures used for polyester and other synthetic fibre dyeing, contributing orange and brown shade ranges.
- Diazo component for disperse dye ranges
- Colour ceiling worth specifying at enquiry
- Distinct grade from agricultural-use material
Pharmaceutical & specialty intermediates
The compound appears as a building-block reference in specialty pharmaceutical and agrochemical synthesis literature, where its stability and defined substitution pattern are useful starting points for further elaboration.
- Custom synthesis quantities
- Research and reference-grade material available
- Tight isomer and residue limits usually apply
Pigment synthesis
Beyond disperse dyes, the same diazo chemistry feeds certain azo pigment structures where the dichloronitroaniline fragment contributes to shade and lightfastness.
- Azo pigment diazo component
- Shade continuity matters for colour houses
- See also our related nitroaniline range
Research & analytical standards
A well-documented, EPA- and regulatory-catalogued compound used as an analytical reference standard in residue testing and method-development laboratories.
- Reference-grade material on request
- Small pack sizes from laboratory scale
- Full analytical documentation available
Contract & scheduled supply
Both crop-protection and colour-industry buyers run seasonal or campaign demand rather than continuous consumption. 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 Dichloran
Chelora Chemicals is a supplier and sourcing partner, not a manufacturer. We own no agrochemical or dye-intermediate plant — and on a compound that serves two genuinely different industries with two different regulatory pathways, that independence means we route your order correctly rather than defaulting to whichever grade a captive unit happens to be running.
We place your order with whichever qualified producer best matches your assay, your registration or colour requirement, your price point and your delivery window.
We keep a second qualified source on this line. When a plant goes down for maintenance, or a season's demand spikes, your order switches source rather than stalling.
- End use confirmed before quoting. Agricultural fungicide use and dye-intermediate use follow different regulatory pathways in most markets — we ask, and route accordingly.
- Batch COA shared before dispatch. You approve the assay and impurity profile against your own spec while the material is still in our warehouse.
- Registration documentation on request. For agricultural-active buyers, we assist with sourcing from producers holding the relevant plant-protection product registrations.
- Pre-shipment samples for qualification. New account or new source, your laboratory qualifies the grade before the full quantity ever moves.
- Export machinery handled in-house. Hazard classification, UN-approved packing, labelling, freight booking and customs paperwork are ours to manage.
- Consolidation onto one bill of lading. Ship this material 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. Tell us how the material 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 and humid destinations. Better protection against moisture pick-up than bagged material.
Jumbo / FIBC bags
Bulk bags with liner for high-volume formulators with mechanical charging. Fewer handling movements and materially lower packing cost per kilo.
Samples & trial packs
Laboratory samples and pilot quantities dispatched by courier so your R&D or QC laboratory can qualify the grade before committing to a full order.
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.
Seasonal despatch
Both fungicide formulators and colour-industry buyers face seasonal demand. We hold contracted tonnage and release it against your calendar instead of landing it all at once.
Handle this as a fatal-on-contact agrochemical active
Dichloran carries a severe acute toxicity classification in widely published references — fatal in contact with skin or if inhaled — alongside organ-toxicity and aquatic hazard entries. This is a registered pesticide active as well as a chemical intermediate, and both handling contexts demand the same level of caution. The summary below is orientation only — the safety data sheet supplied with your consignment is the authoritative document and must govern your risk assessment, PPE selection and emergency planning.
Classified hazards
H300Fatal if swallowed.H310Fatal in contact with skin.H330Fatal if inhaled.H373May cause organ damage through prolonged or repeated exposure.H411Toxic to aquatic life with long lasting effects.
Hazard statements reflect the GHS classification commonly published for CAS 99-30-9. Always read the SDS issued with your specific batch, and treat the fatal-on- contact, fatal-if-inhaled and fatal-if-swallowed entries as the ones that must shape every control you put in place, whether this material is handled as a technical fungicide active or as a chemical intermediate.
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 and 6 of the SDS are the authoritative instructions and must be posted at the point of use.
- Any exposure is a medical emergency. Skin contact, inhalation or ingestion of this material is potentially fatal. Remove contaminated clothing, wash thoroughly and seek medical attention immediately in every case.
- Sweep, do not hose. The material is toxic to aquatic life and very poorly soluble, so it persists as particulate. Collect spilled solid mechanically into a labelled, closed container.
- Suppress dust without generating more. Use vacuum collection with appropriate filtration, not a broom.
- Have the SDS with the casualty at all times so the treating clinician has the product identity, CAS number and fatal-hazard classification in hand immediately.
- Dispose as regulated waste through a licensed contractor — never to general drainage, given the aquatic toxicity.
Storage
- Cool storage recommended, in the region of 0–6 °C for long-term stability, though the material is chemically robust for normal ambient handling and transport.
- Access-controlled storage. Given the fatal-on-contact classification, restricting who can reach the store is a control measure, not an administrative nicety.
- Segregate from oxidising agents, strong acids and reducing agents not part of a controlled process.
- Bunded storage with a sealed floor. The compound is toxic to aquatic life, and containment matters given the acute severity of skin and inhalation exposure.
- Shelf life is typically 24–60 months in sealed original packing under recommended storage conditions.
Handling & PPE
- Design exposure out entirely — do not manage it down. With a fatal-on-contact, fatal-if-inhaled and fatal-if-swallowed classification, closed transfer and mechanical charging are the baseline, not a refinement.
- Full-coverage, chemical-resistant skin protection at every point of contact, including during formulation or dye-house charging.
- Respiratory protection is mandatory wherever dust may be present, per your exposure assessment.
- Eye protection and an accessible, tested eyewash and safety shower at every charging point.
- Health surveillance and exposure records belong in your occupational health programme given the severity of this classification — particularly relevant for formulators handling technical-grade material regularly.
Transport
This material moves as regulated cargo, and agricultural-active shipments in particular attract additional regulatory scrutiny in many markets. We classify each 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, appearance, melting range and impurity profile — 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
UN number, hazard class, packing group and IMDG or IATA declaration prepared and filed before the container is booked, with correctly marked and labelled packaging.
Certificate of Origin
Chamber-attested where required, plus preferential-origin forms where a trade agreement gives your import duty relief at the destination.
Registration support
For agricultural-active buyers, we can assist with documentation confirming the source producer's plant-protection product registration status where required by your market.
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.
One molecule, two industries
It is worth understanding why the same compound serves crop protection and colour chemistry, because it shapes what "quality" means depending on which buyer you are. The notes below are general background, not a process or formulation disclosure.
The symmetric substitution
Chlorine at both positions ortho to the amine, nitro para — a sterically hindered, stable pattern that resists many of the side reactions a less hindered aniline undergoes.
As a fungicide active
Used directly as the active molecule (no further reaction required) — formulated into wettable powders, dusts or other product forms for agricultural application.
As a dye intermediate
Diazotised under controlled conditions despite the steric hindrance, then coupled onto a suitable component to build disperse dye or pigment chromophores.
Two different specifications
A fungicide formulator cares about assay and specific related-substance limits set by registration; a dye house cares about colour and coupling consistency. We ask which you need.
Why we ask about end use before quoting
Because the same CAS number serves two regulatory regimes, getting this wrong has real consequences:
- Agricultural end use in most markets requires the material to originate from a source holding the relevant plant-protection product registration, and an end-use declaration is often expected at import.
- Dye, pigment and general industrial use typically follows ordinary industrial chemical import rules without an agricultural registration requirement — but colour houses have their own tight isomer and related-substance expectations.
- Mixing the two up — sourcing agricultural-registered material for a dye house, or vice versa — usually means paying for compliance you do not need, or missing compliance you do.
That is the reason our very first question on this product is always what you intend to do with it, and the reason the batch COA is shared for approval before dispatch rather than sent with the invoice.
| End use | What matters |
|---|---|
| Fungicide formulation | Registered source Related-substance limits per registration |
| Disperse dyes / pigments | Colour ceiling Coupling consistency batch to batch |
| Research / reference | Highest available purity Full analytical documentation |
We supply the related dichloronitroaniline isomers used in dye and pigment synthesis as well — see the full intermediate range.
What actually moves the price of this intermediate
This 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.
Seasonal agricultural demand
Fungicide formulation demand tracks the growing season for the crops Dichloran is registered on, and buying ahead of a peak season generally beats spot purchasing during it.
- Quote early for the formulation season
- Spot buying at peak costs materially more
- Contracted call-off smooths the exposure
Registration & compliance cost
Agricultural-registered sourcing carries a documentation and compliance cost that general industrial-grade material does not. That cost sits inside the price for registered material.
- Tell us the end use, not just the purity number
- We will say when registered sourcing is unnecessary
- Cheaper to plan for than to remediate at customs
Producer base
Registered fungicide-active production and dye-intermediate production are not always the same plants, which affects which source fits your specific order.
- We hold a second qualified source on this line
- Qualify the alternate before you need it
- Ask us about dual-source contracts
Pack format
Cost per kilo falls from 25 kg bags to drums to jumbo bags — and with a fatal-on- contact classification, bulk bags also cut the number of times an operator opens a pack.
- Small bags carry the highest packing cost
- FIBC is cheapest per kilo at volume
- Less manual handling means less exposure
Freight & DG surcharges
This is regulated cargo, so ocean freight carries a hazardous surcharge and space is tighter than for general cargo. Destination and Incoterm move landed cost as much as the ex-works price does.
- Compare on landed cost, not ex-works
- DG space books out ahead of peak season
- We quote FOB, CIF, CFR or DDP as you prefer
Source availability
A plant turnaround, an environmental inspection or a seasonal demand spike can take capacity offline at short notice. Single-sourced buyers feel this hardest.
- We hold a second qualified source on this line
- Qualify the alternate before you need it
- Ask us about dual-source contracts
| If your end use is… | Specify |
|---|---|
| Fungicide formulation | Registered source; related-substance limits per your registration |
| Disperse dyes / pigments | Colour ceiling, coupling-grade consistency |
| Pharmaceutical / specialty synthesis | Tight isomer limit; metals and residues reported |
| Analytical / reference use | Highest available purity, full analytical pack |
| Laboratory / R&D | Small pack, high purity, fast despatch |
Not sure which column you are in? Describe your end use and our technical desk will recommend the grade and the correct sourcing pathway — including telling you when a cheaper specification would do the job just as well.
Support that goes beyond shipping the bag
What our technical desk will do
- Confirm your end use first. We will not quote until we know whether this is going into a fungicide formulation or a dye house — the correct source and documentation differ.
- Match a grade to your reaction or formulation. Tell us what you are running and we will recommend the specification accordingly.
- Advise on handling and storage for your site conditions and application.
- Review your specification before it goes into a contract, so you are not locked into a limit that no plant can consistently hit.
Regulatory & compliance notes
- Agricultural registration. Where the end use is crop protection, confirm your local plant-protection product registration requirements before ordering — technical-grade active and formulated product are typically regulated separately, and import of the technical active itself may require its own authorisation in some markets.
- Severe hazard classification. Given the fatal-on-contact, fatal-if-inhaled and fatal-if-swallowed entries, confirm your site's occupational health obligations before the first delivery.
- Import controls vary by destination and by end use. We check the destination rules before quoting, not after you have raised the PO.
- Chemical and pesticide inventory listings differ between regions. Confirm your obligations under the applicable regime for your import volume and end use — we will supply the identity data you need for that filing.
None of the above is legal advice — your own regulatory affairs team owns the final compliance position for your import and your end use. What we commit to is giving you accurate product identity data, an honest statement of the hazard classification and complete documentation to work from.
From enquiry to delivered pallet
Tell us your end use
Fungicide formulation, dye/pigment intermediate, or research — this decides the correct source and documentation before we even discuss price.
Receive a firm quote
Pricing, lead time, packing, sourcing pathway 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 and, where relevant, registration documentation shared for your approval before release.
Ship and track
DG classification filed, freight booked, export documents issued, and the consignment tracked through transit and clearance to your plant.
What buyers ask us about Dichloran / 2,6-Dichloro-4-Nitroaniline
Is this the fungicide, or the chemical intermediate?
Do I need a pesticide registration to buy this?
How dangerous is this material?
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 UN number, class and packing group
- Commercial invoice, packing list and bill of lading or airway bill
- Certificate of origin, and where relevant, registration documentation for the source producer
Do you supply to my country?
Do you manufacture this yourself?
Can you hold stock against a production or formulation plan?
Request pricing on 2,6-Dichloro-4-Nitroaniline
Tell us your end use — fungicide formulation, dye/pigment intermediate, or research — along with 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, the correct sourcing pathway and packing options.