Insecticide & engineering polymer intermediate
2,6-Difluoro Benzonitrile (2,6-DFBN) Supplier & Distributor in India & Worldwide
Chelora Agrochem is a trusted 2,6-Difluoro Benzonitrile (2,6-DFBN) supplier and distributor in India, connecting buyers with high-purity material sourced from leading, quality-approved manufacturers. Our 2,6-difluorobenzonitrile meets 99% min purity with low residual chloro-analogue content, full documentation and reliable bulk 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 2,6-DFBN requirements, backed by COA, MSDS and TDS on every order.
- CAS number
- 1897-52-5
- Formula
- C7H3F2N
- Molecular weight
- 139.10 g/mol
- Purity
- 99% min
Quick product specifications
2,6-Difluoro Benzonitrile at a glance
Identifiers, physical data and trade codes for 2,6-DFBN. Batch-specific figures are confirmed on the Certificate of Analysis supplied with each consignment, in India and on export shipments alike.
- Chemical name
- 2,6-Difluoro Benzonitrile
- CAS number
- 1897-52-5
- Molecular formula
- C7H3F2N
- Molecular weight
- 139.10 g/mol
- IUPAC name
- 2,6-Difluorobenzonitrile
- EC number
- 217-589-7
- HS code
- 2926 90National subheading as per destination
- UN number
- Per supplier SDSNo UN number is normally assigned to this product; the classification stated on the supplier Safety Data Sheet and the shipping documents for your consignment applies
- Appearance
- White to pale yellow crystalline solidMelts just above room temperature; may arrive partly fused in warm weather
- Melting point
- 25–28 °C
- Boiling point
- 197–198 °C
- Density
- About 1.25 g/cm³At 25 °C
- Flash point
- About 80 °CClosed cup, combustible
- Solubility
- Slightly soluble in waterAbout 1.9 g/L at 20 °C; freely soluble in alcohols, ketones and aromatic solvents
- Purity
- 99% min
- Synonyms
- 2,6-DFBN2,6-Difluorobenzonitrile · DFBN
- Product form
- Crystals, flakes or melt
- Documentation
- COA, MSDS & TDSSupplied with every order
Product overview
What is 2,6-Difluoro Benzonitrile?
2,6-Difluoro Benzonitrile (2,6-DFBN) is a fluorinated aromatic nitrile with two reactive handles: the nitrile group, which is hydrolysed to the amide that benzoylurea insecticides are built from, and the two ring fluorines, which are activated for displacement by phenoxides in high-performance polymer synthesis.
With the formula C7H3F2N (CAS 1897-52-5), 2,6-DFBN is a white to pale yellow crystalline solid melting at about 26 °C and boiling near 198 °C. It is only slightly soluble in water — around 1.9 g/L — but dissolves freely in alcohols, ketones and aromatic solvents.
Its dominant commercial outlet is 2,6-difluorobenzamide, the acyl half of diflubenzuron and the whole benzoylurea insect growth regulator family. A second, growing outlet is polymer chemistry, where the nitrile group activates both fluorines strongly enough for clean step-growth polymerisation with bisphenols.
How it is made
2,6-Difluorobenzonitrile is made from 2,6-dichlorobenzonitrile by halogen exchange with potassium fluoride in a polar aprotic solvent at elevated temperature. The crude product is washed free of salts, dried and purified by distillation or crystallisation, then flaked or packed for dispatch.
What that means for your process
- Low residual 2,6-dichloro and mono-fluoro analogue, checked by GC
- Low moisture — the nitrile hydrolyses slowly in the presence of water
- Consistent setting point for reliable melting and charging
- Crystal, flake or molten supply to suit your charging system
Applications
What is 2,6-Difluoro Benzonitrile used for?
2,6-DFBN is used almost entirely as a chemical intermediate. Its main applications, industry by industry, include:
Benzoylurea insecticides
The dominant outlet: hydrolysis to 2,6-difluorobenzamide, then condensation to the urea.
- Hydrolysis to 2,6-difluorobenzamide
- Diflubenzuron with 4-chlorophenyl isocyanate
- Teflubenzuron, hexaflumuron and lufenuron routes
High-performance polymers
Both ring fluorines are activated by the nitrile, giving clean step-growth polymerisation.
- Poly(aryl ether nitrile)s with bisphenols
- Nitrile-bearing engineering thermoplastics
- High-temperature membrane and film materials
Pharmaceuticals & fine chemicals
A difluorinated aromatic handle for amides, amidines and heterocycles.
- 2,6-Difluorobenzamide and benzoyl chloride derivatives
- Fluorinated heterocycle synthesis
- Custom difluoroaromatic building blocks
Process route
How is 2,6-DFBN used to make diflubenzuron?
The largest single outlet for 2,6-DFBN is the benzoylurea route. The nitrile is hydrolysed under controlled conditions to 2,6-difluorobenzamide, which is then condensed with 4-chlorophenyl isocyanate to give diflubenzuron — the insect growth regulator that blocks chitin synthesis in larvae.
2,6-Difluoro Benzonitrile
Melted and charged. Assay and chloro-analogue content decide downstream yield.
C7H3F2NControlled hydrolysis
The nitrile is hydrolysed to the primary amide without going on to the acid.
H2O, catalyst2,6-Difluorobenzamide
Isolated and dried as the key acyl building block.
DFBADiflubenzuron
Condensed with 4-chlorophenyl isocyanate to the benzoylurea insecticide.
DiflubenzuronIn depth
2,6-Difluoro Benzonitrile applications by industry
Below is a detailed breakdown of where 2,6-DFBN is used and the role it plays in each downstream product.
| Industry | Typical downstream products | Role of 2,6-DFBN |
|---|---|---|
| Agrochemicals | Diflubenzuron, teflubenzuron, hexaflumuron, lufenuron | Core intermediate |
| Engineering polymers | Poly(aryl ether nitrile)s and high-temperature thermoplastics | Monomer |
| Pharmaceuticals | Difluorobenzamide and fluorinated heterocycle intermediates | Intermediate |
| Specialty materials | High-temperature films and membranes | Building block |
| Fine chemicals | Custom difluoroaromatic synthesis | Building block |
Safety
Is 2,6-Difluoro Benzonitrile hazardous?
Yes, though less severely than the nitroaromatics. 2,6-DFBN is harmful if swallowed, in contact with skin or if inhaled, causes skin and eye irritation, and may cause respiratory irritation. It is a combustible solid with a flash point around 80 °C.
2,6-DFBN should be stored in sealed drums or bags in a cool, dry, ventilated place away from heat, moisture, strong bases and strong oxidisers, and handled with chemical-resistant gloves, goggles and protective clothing, with local exhaust ventilation where dust or vapour can form. Molten product must be handled in closed, heated and properly vented systems. Prevent release to drains and waterways. A full MSDS is supplied with every order.
Signal word: Warning
Harmful if swallowed, in contact with skin or if inhaled · causes skin and eye irritation · may cause respiratory irritation
Safe-handling essentials
- Chemical-resistant gloves, goggles and protective clothing
- Local exhaust ventilation where dust or vapour can form
- Avoid prolonged or repeated skin contact
- Handle molten material only in closed, heated, vented systems
- Keep drums and bags sealed, cool and dry — moisture hydrolyses the nitrile
- Store away from strong bases and strong oxidisers
- Never allow release to drains, soil or waterways
- Confirm the transport classification on the SDS before despatch
Grades
2,6-Difluoro Benzonitrile grades & technical specifications
We supply 2,6-DFBN in standard industrial grade for agrochemical use and in high-purity, low-moisture grades for polymer and pharmaceutical work.
| Parameter | Specification |
|---|---|
| Assay (purity) | 99% min |
| Appearance | White to pale yellow crystals or flakes |
| 2,6-Dichlorobenzonitrile | 0.3% max |
| Mono-fluoro analogue | 0.3% max |
| Setting point | 24.5 °C min |
| Moisture | 0.1% max |
| Residue on ignition | 0.1% max |
| Product form | Crystals, flakes or molten |
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 kg and 50 kg HDPE drums, fibre drums or HDPE-lined bags; molten supply in heated containers on request for large users.
Minimum order quantity
Flexible — single drums for trials through to full-container loads.
Shelf life
Long shelf life in sealed, unopened packs stored cool, dry and away from heat and moisture.
Dispatch
Pan-India dispatch and worldwide export with complete dangerous-goods documentation and logistics support.
Why buy from us
Why choose Chelora as your 2,6-DFBN supplier?
As an established 2,6-Difluoro Benzonitrile 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, melting, PPE and process fit from a team that knows fluorinated nitrile chemistry.
One point of contact
Source 2,6-DFBN alongside your other intermediates — one enquiry, one team, one invoice.
Ordering
How to order 2,6-Difluoro Benzonitrile 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
2,6-Difluoro Benzonitrile 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 / dermal / inhalation); skin irritation cat. 2; eye irritation cat. 2; STOT SE cat. 3 (respiratory irritation) |
| Signal word | Warning |
| First aid — inhalation | Move to fresh air; keep at rest; get medical advice if symptoms persist |
| 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 and vapour; ventilate; keep dry |
| Storage | Cool, dry, sealed; away from heat, moisture, bases & oxidisers |
| Environment | Prevent release to drains, soil and waterways |
| Transport | Confirmed on the supplier SDS and shipping documents |
Certificate of Analysis (representative)
| Test parameter | Specification | Method |
|---|---|---|
| Assay (purity) | 99% min | GC |
| Appearance | White to pale yellow crystals | Visual |
| Chloro analogue | 0.3% max | GC |
| Setting point | 24.5 °C min | Capillary |
| Moisture | 0.1% max | Karl Fischer |
| Residue on ignition | 0.1% max | Gravimetric |
The actual batch COA is supplied with each shipment.
FAQ
Frequently asked questions
Common questions from buyers specifying 2,6-DFBN for insecticide, polymer and pharmaceutical production.
What is 2,6-Difluoro Benzonitrile used for?
2,6-DFBN is used mainly to make 2,6-difluorobenzamide, the acyl building block of diflubenzuron and the other benzoylurea insect growth regulators such as teflubenzuron, hexaflumuron and lufenuron. It is also used as a monomer for poly(aryl ether nitrile) engineering polymers and as a difluoroaromatic intermediate in pharmaceutical synthesis.
What is the CAS number of 2,6-DFBN?
The CAS number is 1897-52-5 and the molecular formula is C7H3F2N, with a molecular weight of 139.10 g/mol. Its EC number is 217-589-7.
How is 2,6-Difluoro Benzonitrile made?
It is made from 2,6-dichlorobenzonitrile by halogen exchange with potassium fluoride in a polar aprotic solvent at elevated temperature, then washed free of salts, dried and purified by distillation or crystallisation.
Is 2,6-Difluoro Benzonitrile hazardous?
Yes. It is harmful if swallowed, in contact with skin or if inhaled, causes skin and eye irritation, and may cause respiratory irritation. It is also a combustible solid. Handle it with PPE and ventilation and keep it dry; we supply a full MSDS with every order.
Why does 2,6-DFBN work as a polymer monomer?
The nitrile group withdraws electron density from the ring and activates both ortho fluorines towards nucleophilic aromatic substitution. That lets it react cleanly with bisphenols in a step-growth polymerisation to give poly(aryl ether nitrile)s, which keep their strength at temperatures where ordinary thermoplastics fail.
How should 2,6-DFBN be stored?
In sealed drums or bags in a cool, dry, well-ventilated store, away from heat, moisture, strong bases and strong oxidisers. Because it melts at about 26 °C it can fuse in warm weather, which is cosmetic rather than a quality problem; molten material must be kept in closed, heated and vented systems.
Do you provide COA and MSDS for 2,6-DFBN?
Yes, we provide a batch-specific COA and MSDS with every order, plus technical support on request.
Do you supply and export 2,6-Difluoro Benzonitrile?
Yes, we supply 2,6-DFBN across India and export internationally with complete documentation, sourced from reliable manufacturers.
Request a quote or sample
Need a reliable 2,6-DFBN supplier?
Looking for a dependable 2,6-Difluoro Benzonitrile (2,6-DFBN) 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