Pharma & agrochemical intermediate
2,3-Dichloro Nitro Benzene (2,3-DCNB) Supplier & Distributor in India & Worldwide
Chelora Agrochem is a trusted 2,3-Dichloro Nitro Benzene (2,3-DCNB) supplier and distributor in India, connecting buyers with high-purity material sourced from leading, quality-approved manufacturers. Our 1,2-dichloro-3-nitrobenzene meets 99% min purity with controlled 3,4-isomer content, full documentation and reliable supply across India and to buyers worldwide.
As a specialised distributor of chemical products, we do not manufacture in-house — instead we source only from reliable, audited manufacturers, giving you dependable material, competitive pricing and a single point of contact for all your 2,3-DCNB requirements, backed by COA, MSDS and TDS on every order.
- CAS number
- 3209-22-1
- Formula
- C6H3Cl2NO2
- Molecular weight
- 192.00 g/mol
- Purity
- 99% min
Quick product specifications
2,3-Dichloro Nitro Benzene at a glance
Identifiers, physical data and trade codes for 2,3-DCNB. Batch-specific figures are confirmed on the Certificate of Analysis supplied with each consignment, in India and on export shipments alike.
- Chemical name
- 2,3-Dichloro Nitro Benzene
- CAS number
- 3209-22-1
- Molecular formula
- C6H3Cl2NO2
- Molecular weight
- 192.00 g/mol
- IUPAC name
- 1,2-Dichloro-3-nitrobenzene
- EC number
- 221-725-2
- HS code
- 2904 99National subheading as per destination
- UN number
- Typically UN 2811Toxic solid, organic, n.o.s. · Class 6.1 — confirm on SDS
- Appearance
- Yellow crystalline solid
- Melting point
- 60–62 °C
- Boiling point
- 257–258 °C
- Flash point
- Above 110 °CCombustible solid
- Solubility
- Practically insoluble in waterSoluble in common organic solvents
- Purity
- 99% min
- Synonyms
- 2,3-DCNB1,2-Dichloro-3-nitrobenzene · 3-Nitro-o-dichlorobenzene
- Product form
- Crystals or flakes
- Odour
- Faint, aromatic
- Documentation
- COA, MSDS & TDSSupplied with every order
Product overview
What is 2,3-Dichloro Nitro Benzene?
2,3-Dichloro Nitro Benzene (2,3-DCNB) is a dichlorinated nitroaromatic used mainly as the precursor of 2,3-dichloroaniline, a pharmaceutical building block. Its two adjacent chlorines sit ortho and meta to the nitro group.
With the formula C6H3Cl2NO2 (CAS 3209-22-1), 2,3-DCNB is a yellow crystalline solid that melts at about 61 °C and is practically insoluble in water. It is the minor isomer from the nitration of o-dichlorobenzene and is recovered from the 3,4-DCNB stream.
Because it is the less common isomer, consistent supply and a tight 3,4-isomer limit matter as much as assay — especially for pharmaceutical customers whose downstream specifications are strict.
How it is made
o-Dichlorobenzene is nitrated with mixed nitric and sulfuric acid. 3,4-DCNB is the main product; 2,3-DCNB forms as the minor isomer and is separated and purified by crystallisation and distillation.
What that means for your process
- Ortho-chlorine activated for substitution
- 3,4-isomer content controlled to grade, checked by GC
- Low moisture and acidity for clean hydrogenation
- Free-flowing crystals for easy charging
Applications
What is 2,3-Dichloro Nitro Benzene used for?
2,3-DCNB is used almost entirely as a chemical intermediate. Its main applications, industry by industry, include:
Pharmaceuticals
Hydrogenated to 2,3-dichloroaniline, which is cyclised to 1-(2,3-dichlorophenyl)piperazine — a key intermediate for central-nervous-system APIs.
- Precursor of 2,3-dichloroaniline
- Route to 1-(2,3-dichlorophenyl)piperazine
- Other 2,3-dichlorophenyl API intermediates
Agrochemicals
Used where a 2,3-dichlorophenyl or substituted nitroaromatic group is needed in crop-protection actives.
- Agrochemical intermediates via 2,3-DCA
- Halogen-exchange to fluoro-chloro nitrobenzenes
Dyes & fine chemicals
Specified by custom-synthesis houses for dye, pigment and research intermediates.
- Azo dye and pigment intermediates
- Custom synthesis and research scale-up
Process route
How is 2,3-DCNB used in pharmaceutical synthesis?
2,3-DCNB is reduced to 2,3-dichloroaniline, which is cyclised with bis(2-chloroethyl)amine to 1-(2,3-dichlorophenyl)piperazine. That piperazine is a key building block for several central-nervous-system active ingredients.
2,3-Dichloro Nitro Benzene
Charged as the nitro compound. Assay and 3,4-isomer content decide aniline purity.
C6H3Cl2NO2Catalytic hydrogenation
Reduced with hydrogen over a catalyst, with dechlorination suppressed.
H2 / catalyst2,3-Dichloroaniline
The aniline intermediate, cyclised to the aryl piperazine.
2,3-DCAAPI intermediate
1-(2,3-Dichlorophenyl)piperazine, used to build CNS active ingredients.
Aryl piperazineIn depth
2,3-Dichloro Nitro Benzene applications by industry
Below is a detailed breakdown of where 2,3-DCNB is used and the role it plays in each downstream product.
| Industry | Typical downstream products | Role of 2,3-DCNB |
|---|---|---|
| Pharmaceuticals | 2,3-Dichloroaniline, 1-(2,3-dichlorophenyl)piperazine | Precursor |
| Agrochemicals | 2,3-Dichlorophenyl intermediates | Intermediate |
| Dyes & pigments | Azo dye intermediates | Intermediate |
| Fine chemicals | Custom 2,3-dichlorophenyl molecules | Building block |
Safety
Is 2,3-Dichloro Nitro Benzene hazardous?
Yes. 2,3-DCNB is harmful if swallowed and can be absorbed through the skin, may cause methaemoglobinaemia at high exposure, and is toxic to aquatic life with long-lasting effects. With correct PPE, ventilation and storage it is safely handled in industry.
2,3-DCNB should be stored in sealed containers in a cool, dry, ventilated place away from heat, strong bases, reducing agents and oxidisers, and handled with gloves, goggles and dust respiratory protection. Prevent release to drains and waterways. A full MSDS is supplied with every order.
Signal word: Warning
Harmful if swallowed · may affect the blood · toxic to aquatic life with long-lasting effects
Safe-handling essentials
- Gloves, goggles and protective clothing at all times
- Dust respirator; use local exhaust ventilation
- Avoid skin contact — nitroaromatics are absorbed through the skin
- Keep packs sealed, cool and dry
- Store away from strong bases, reducing agents and oxidisers
- Never allow release to drains, soil or waterways
- Transport as a class 6.1 toxic solid — UN entry stated on the SDS
Grades
2,3-Dichloro Nitro Benzene grades & technical specifications
We supply 2,3-DCNB in standard and pharmaceutical-intermediate grades with tight isomer control.
| Parameter | Specification |
|---|---|
| Assay (purity) | 99% min |
| Appearance | Yellow crystals or flakes |
| 3,4-Dichloronitrobenzene | 0.5% max |
| Other isomers | 0.3% max |
| Melting range | 60–62 °C |
| Moisture | 0.2% max |
| Acidity | 0.01% max |
| Product form | Crystals or flakes |
Note: Values are representative. Batch-specific figures are provided on the Certificate of Analysis (COA) supplied with each consignment.
Supply
Packaging, MOQ & supply
From trial quantities for process validation to repeat container loads on contract — packed, documented and dispatched to your plant in India or overseas.
Packaging
25 or 50 kg HDPE-lined bags or fibre drums, palletised and shrink-wrapped.
Minimum order quantity
Flexible — single drums or bags for trials through to full-container loads.
Shelf life
Long shelf life in sealed, unopened packs stored cool, dry and out of direct light.
Dispatch
Pan-India dispatch and worldwide export with complete dangerous-goods documentation and logistics support.
Why buy from us
Why choose Chelora as your 2,3-DCNB supplier?
As an established 2,3-Dichloro Nitro Benzene supplier and distributor based in India and shipping worldwide, we work with a wide network of trusted manufacturers to combine consistent quality with dependable service. More about Chelora Agrochem.
High purity, every batch
99% min assay, sourced only from quality-approved manufacturers we have worked with and audited.
Full documentation
COA, MSDS and TDS travel with every order, so your QA and EHS teams are never chasing paperwork.
Reliable bulk supply, flexible MOQ
Single packs for process trials through to repeat container loads on schedule.
Worldwide supply
Export-grade packing, dangerous-goods documentation and on-time dispatch to plants across Asia, the Middle East, Europe, Africa and the Americas.
Technical & safe-handling support
Guidance on storage, PPE and process fit from a team that knows nitroaromatic intermediates.
One point of contact
Source 2,3-DCNB alongside your other intermediates — one enquiry, one team, one invoice.
Ordering
How to order 2,3-Dichloro Nitro Benzene from Chelora
Ordering is simple and fast — most enquiries are answered with pricing and availability within 24 hours.
- 1
Send your enquiry
Tell us the grade, quantity and application you are buying for.
- 2
Receive a quotation
We send pricing along with the COA and MSDS for your review.
- 3
Request a sample
Test suitability for your process before you commit to a bulk order.
- 4
Confirm the order
Lock in quantity, packaging and delivery preference.
- 5
Dispatch & tracking
We dispatch with full documentation and keep you updated until delivery.
Documentation
2,3-Dichloro Nitro Benzene MSDS & COA
A summary of key safety information and a representative Certificate of Analysis. The complete 16-section Safety Data Sheet and the actual batch COA are supplied with each shipment — and both are sent with your quotation when you ask for a quote.
Safety data summary (MSDS)
| Section | Details |
|---|---|
| Hazard classification | Acute toxicity cat. 4 (oral); aquatic chronic cat. 2 — further classifications on the SDS |
| Signal word | Warning |
| First aid — inhalation | Move to fresh air; seek medical help. Watch for signs of methaemoglobinaemia (blue lips or nails) |
| First aid — skin | Remove contaminated clothing; wash thoroughly with soap & water |
| First aid — eyes | Rinse with water for several minutes; get medical advice |
| Handling | Use PPE; avoid dust, vapour and skin contact; ventilate |
| Storage | Cool, dry, sealed; away from heat, bases, reducing agents & oxidisers |
| Environment | Toxic to aquatic life; prevent release to drains / waterways |
| Transport | Class 6.1 toxic solid; typically UN 2811 — confirm on SDS |
Certificate of Analysis (representative)
| Test parameter | Specification | Method |
|---|---|---|
| Assay (purity) | 99% min | GC |
| Appearance | Yellow crystals | Visual |
| 3,4-Isomer | 0.5% max | GC |
| Melting range | 60–62 °C | Capillary |
| Moisture | 0.2% max | Karl Fischer |
| Acidity | 0.01% max | Titration |
The actual batch COA is supplied with each shipment.
FAQ
Frequently asked questions
Common questions from buyers specifying 2,3-DCNB for pharmaceutical, agrochemical and fine-chemical production.
What is 2,3-Dichloro Nitro Benzene used for?
2,3-DCNB is used mainly to make 2,3-dichloroaniline, which is converted to 1-(2,3-dichlorophenyl)piperazine and other pharmaceutical intermediates. It is also used in agrochemical, dye and fine-chemical synthesis.
What is the CAS number of 2,3-DCNB?
The CAS number is 3209-22-1 and the molecular formula is C6H3Cl2NO2. It is also known as 1,2-dichloro-3-nitrobenzene or 3-nitro-o-dichlorobenzene.
How is 2,3-DCNB made?
It is the minor isomer from the nitration of o-dichlorobenzene, alongside 3,4-DCNB. It is separated and purified by crystallisation and distillation.
Is 2,3-Dichloro Nitro Benzene hazardous?
Yes. It is harmful if swallowed, can be absorbed through the skin, may cause methaemoglobinaemia at high exposure and is toxic to aquatic life. Handle it with proper PPE, ventilation and containment; we supply a full MSDS with every order.
What is the difference between 2,3-DCNB and 3,4-DCNB?
Both come from nitrating o-dichlorobenzene. 2,3-DCNB has its chlorines ortho and meta to the nitro group and leads to 2,3-dichloroaniline for pharmaceuticals; 3,4-DCNB has them meta and para and leads to 3,4-dichloroaniline for herbicides.
How should 2,3-DCNB be stored?
In sealed bags or drums in a cool, dry, well-ventilated store, out of direct light and away from heat, strong bases, reducing agents and oxidisers.
Do you provide COA and MSDS for 2,3-DCNB?
Yes, we provide a batch-specific COA and MSDS with every order, plus technical support on request.
Do you supply and export 2,3-Dichloro Nitro Benzene?
Yes, we supply 2,3-DCNB across India and export internationally with complete dangerous-goods documentation, sourced from reliable manufacturers.
Request a quote or sample
Need a reliable 2,3-DCNB supplier?
Looking for a dependable 2,3-Dichloro Nitro Benzene (2,3-DCNB) supplier and distributor — in India or anywhere we export to? Tell us the grade and quantity you need — our team responds with competitive bulk pricing, samples and complete documentation (COA, MSDS, TDS) within 24 hours.
Or email source@cheloraagrochem.com