Dye, rubber & agrochemical intermediate
Para Nitro Chloro Benzene (PNCB) Supplier & Distributor in India & Worldwide
Chelora Agrochem is a trusted Para Nitro Chloro Benzene (PNCB) supplier and distributor in India, connecting buyers with high-purity material sourced from leading, quality-approved manufacturers. Our 1-chloro-4-nitrobenzene meets 99% min purity with low ortho-isomer 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 PNCB requirements, backed by COA, MSDS and TDS on every order.
- CAS number
- 100-00-5
- Formula
- C6H4ClNO2
- Molecular weight
- 157.55 g/mol
- Purity
- 99% min
Quick product specifications
Para Nitro Chloro Benzene at a glance
Identifiers, physical data and trade codes for PNCB. Batch-specific figures are confirmed on the Certificate of Analysis supplied with each consignment, in India and on export shipments alike.
- Chemical name
- Para Nitro Chloro Benzene
- CAS number
- 100-00-5
- Molecular formula
- C6H4ClNO2
- Molecular weight
- 157.55 g/mol
- IUPAC name
- 1-Chloro-4-nitrobenzene
- EC number
- 202-809-6
- HS code
- 2904 99National subheading as per destination
- UN number
- UN 1578Chloronitrobenzenes, solid · Class 6.1, PG II
- Appearance
- Pale yellow crystalline solidAlso supplied molten in heated tankers on request
- Melting point
- 82–84 °C
- Boiling point
- 242 °C
- Density
- About 1.52 g/cm³Solid, 20 °C
- Flash point
- About 127 °CClosed cup, combustible solid
- Solubility
- Practically insoluble in waterSoluble in hot ethanol, ether and aromatic solvents
- Purity
- 99% min
- Synonyms
- PNCBp-Nitrochlorobenzene · 4-Chloronitrobenzene · 4-Nitrochlorobenzene
- Product form
- Flakes, crystals or molten
- Documentation
- COA, MSDS & TDSSupplied with every order
Product overview
What is Para Nitro Chloro Benzene?
Para Nitro Chloro Benzene (PNCB) is a chlorinated nitroaromatic used as a base intermediate for dyes, rubber chemicals, pharmaceuticals and agrochemicals. The chlorine atom sits directly opposite the nitro group, which activates it for substitution by amines, alkoxides and hydroxide.
With the formula C6H4ClNO2 (CAS 100-00-5), PNCB is a pale yellow crystalline solid that melts at about 83 °C and is practically insoluble in water. It is made by nitrating chlorobenzene, which gives a mixture of the para and ortho isomers that are then separated.
Because the para-nitro group activates the chlorine so strongly, PNCB converts cleanly to p-nitroaniline, p-nitrophenol, p-nitroanisole and 4-nitrodiphenylamine — which is why buyers specify it by ortho- and meta-isomer content as closely as by assay.
How it is made
Chlorobenzene is nitrated with mixed nitric and sulfuric acid, giving roughly two parts para- to one part ortho-nitrochlorobenzene with a little meta isomer. The isomers are separated by a combination of crystallisation and fractional distillation.
What that means for your process
- Activated chlorine for clean nucleophilic substitution
- Low ortho- and meta-isomer content, checked by GC
- Low moisture and acidity for stable storage
- Flaked or molten form to suit your charging system
Applications
What is Para Nitro Chloro Benzene used for?
PNCB is used almost entirely as a chemical intermediate. Its main applications, industry by industry, include:
Rubber chemicals
Feeds the 4-aminodiphenylamine route to the antidegradants that protect tyres and rubber goods.
- Converted to 4-nitrodiphenylamine with aniline
- Hydrogenated to 4-ADPA, then to 6PPD and IPPD
- Also used for p-phenylenediamine
Dyes & pigments
A starting point for p-nitroaniline, p-anisidine and p-phenetidine, key azo dye and pigment intermediates.
- Ammonolysis to p-nitroaniline
- Methoxylation to p-nitroanisole, then p-anisidine
- Sulfur and azo dye intermediates
Pharmaceuticals & agrochemicals
Hydrolysed to p-nitrophenol and reduced to p-aminophenol and p-chloroaniline.
- p-Aminophenol for paracetamol
- p-Nitrophenol for organophosphate actives
- p-Chloroaniline for agro and pharma intermediates
Process route
How is PNCB used to make rubber antioxidants?
The largest single outlet for PNCB is the 4-aminodiphenylamine (4-ADPA) route. PNCB is condensed with aniline or formanilide to 4-nitrodiphenylamine, which is hydrogenated to 4-ADPA and then reductively alkylated to the PPD antidegradants used in tyres.
Para Nitro Chloro Benzene
Charged as the activated aryl chloride. Assay and ortho-isomer content decide downstream yield.
C6H4ClNO2Condensation
Reacted with aniline or formanilide in the presence of a base and catalyst.
Aniline / formanilide4-Nitrodiphenylamine
Hydrogenated over a catalyst to 4-aminodiphenylamine (4-ADPA).
4-ADPARubber antidegradant
Reductive alkylation with a ketone gives 6PPD or IPPD for tyres and rubber goods.
6PPDIn depth
Para Nitro Chloro Benzene applications by industry
Below is a detailed breakdown of where PNCB is used and the role it plays in each downstream product.
| Industry | Typical downstream products | Role of PNCB |
|---|---|---|
| Rubber chemicals | 4-ADPA, 6PPD, IPPD, p-phenylenediamine | Core intermediate |
| Dyes & pigments | p-Nitroaniline, p-anisidine, p-phenetidine | Starting material |
| Pharmaceuticals | p-Aminophenol (paracetamol), p-chloroaniline | Intermediate |
| Agrochemicals | p-Nitrophenol-based actives, p-chloroaniline derivatives | Intermediate |
| Fine chemicals | Custom nitro- and amino-aromatics | Building block |
Safety
Is Para Nitro Chloro Benzene hazardous?
Yes. PNCB is toxic if swallowed, in contact with skin or if inhaled, is suspected of causing genetic defects and cancer, and can damage the blood through repeated exposure by causing methaemoglobinaemia. It is also toxic to aquatic life with long-lasting effects.
PNCB should be stored in sealed containers in a cool, dry, ventilated place away from heat, strong bases, reducing agents and oxidisers, and handled with chemical-resistant gloves, goggles, protective clothing and dust or vapour respiratory protection. Molten product must be handled in closed, heated systems. Prevent release to drains and waterways. A full MSDS is supplied with every order.
Signal word: Danger
Toxic by ingestion, skin contact and inhalation · suspected mutagen and carcinogen · toxic to aquatic life
Safe-handling essentials
- Chemical-resistant gloves, goggles and protective clothing at all times
- Dust or vapour respirator; use local exhaust ventilation
- Avoid all skin contact — PNCB is absorbed through the skin
- Keep bags and drums sealed, cool and dry
- Store away from strong bases, reducing agents and oxidisers
- Never allow release to drains, soil or waterways
- Transport as UN 1578, class 6.1, packing group II
Grades
Para Nitro Chloro Benzene grades & technical specifications
We supply PNCB in standard industrial grade and in low-ortho grades for dye and pharmaceutical work.
| Parameter | Specification |
|---|---|
| Assay (purity) | 99% min |
| Appearance | Pale yellow flakes or crystals |
| Ortho-nitrochlorobenzene | 0.5% max |
| Meta-nitrochlorobenzene | 0.3% max |
| Setting point | 82.5 °C min |
| Moisture | 0.1% max |
| Acidity (as HNO3) | 0.01% max |
| Product form | Flakes, crystals 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
50 kg HDPE-lined bags, fibre or HDPE drums, jumbo bags, or molten in heated tankers as per quantity.
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 away from heat sources.
Dispatch
Pan-India dispatch and worldwide export with complete dangerous-goods documentation and logistics support.
Why buy from us
Why choose Chelora as your PNCB supplier?
As an established Para Nitro Chloro 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 PNCB alongside your other intermediates — one enquiry, one team, one invoice.
Ordering
How to order Para Nitro Chloro 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
Para Nitro Chloro 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. 3 (oral / dermal / inhalation); germ cell mutagenicity cat. 2; carcinogenicity cat. 2; STOT RE cat. 2 (blood); aquatic chronic cat. 2 |
| Signal word | Danger |
| 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 | UN 1578; class 6.1; packing group II |
Certificate of Analysis (representative)
| Test parameter | Specification | Method |
|---|---|---|
| Assay (purity) | 99% min | GC |
| Appearance | Pale yellow flakes | Visual |
| Ortho isomer | 0.5% max | GC |
| Meta isomer | 0.3% max | GC |
| Setting point | 82.5 °C min | Capillary |
| Moisture | 0.1% max | Karl Fischer |
The actual batch COA is supplied with each shipment.
FAQ
Frequently asked questions
Common questions from buyers specifying PNCB for rubber chemical, dye, pharmaceutical and agrochemical production.
What is Para Nitro Chloro Benzene used for?
PNCB is used mainly to make 4-aminodiphenylamine for rubber antioxidants such as 6PPD, p-nitroaniline and p-anisidine for dyes, p-aminophenol for paracetamol, and p-nitrophenol and p-chloroaniline for agrochemical and pharmaceutical intermediates.
What is the CAS number of PNCB?
The CAS number is 100-00-5 and the molecular formula is C6H4ClNO2. It is also known as 1-chloro-4-nitrobenzene, p-nitrochlorobenzene or 4-chloronitrobenzene.
How is PNCB made?
Chlorobenzene is nitrated with mixed acid, giving mainly para- and ortho-nitrochlorobenzene with a little meta isomer. The para isomer is separated by crystallisation and distillation.
Is Para Nitro Chloro Benzene hazardous?
Yes. It is toxic if swallowed, in contact with skin or if inhaled, is suspected of causing genetic defects and cancer, can cause methaemoglobinaemia, and is toxic to aquatic life. Handle it with full PPE, ventilation and containment; we supply a full MSDS with every order.
What is the difference between PNCB and ONCB?
Both come from the nitration of chlorobenzene. PNCB has the nitro group opposite the chlorine (para) and is a solid; ONCB has it next to the chlorine (ortho) and melts at about 32 °C. They lead to different downstream products, so the ortho content of PNCB is controlled tightly.
How should PNCB be stored?
In sealed bags or drums in a cool, dry, well-ventilated store, away from heat, strong bases, reducing agents and oxidisers. Molten PNCB must be kept in closed, heated and properly vented systems.
Do you provide COA and MSDS for PNCB?
Yes, we provide a batch-specific COA and MSDS with every order, plus technical support on request.
Do you supply and export Para Nitro Chloro Benzene?
Yes, we supply PNCB across India and export internationally with complete dangerous-goods documentation, sourced from reliable manufacturers.
Request a quote or sample
Need a reliable PNCB supplier?
Looking for a dependable Para Nitro Chloro Benzene (PNCB) 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