Pigment, dye & agro intermediate
Para Toluidine (4-Methylaniline) Supplier & Distributor in India & Worldwide
Chelora Agrochem is a trusted Para Toluidine (PT) supplier and distributor in India, connecting buyers with high-purity material sourced from leading, quality-approved manufacturers. Our p-toluidine meets 99.5% min purity with low ortho and meta toluidine 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 PT requirements, backed by COA, MSDS and TDS on every order.
- CAS number
- 106-49-0
- Formula
- C7H9N
- Molecular weight
- 107.15 g/mol
- Purity
- 99.5% min
Quick product specifications
Para Toluidine at a glance
Identifiers, physical data and trade codes for PT. Batch-specific figures are confirmed on the Certificate of Analysis supplied with each consignment, in India and on export shipments alike.
- Chemical name
- p-Toluidine
- CAS number
- 106-49-0
- EC number
- 203-403-1
- Molecular formula
- C7H9N
- Molecular weight
- 107.15 g/mol
- IUPAC name
- 4-Methylaniline
- HS code
- 2921 43 50
- UN number
- UN 3451Toluidines, solid — class 6.1, PG II
- Appearance
- Colourless to light-yellow lustrous flakesDarkens on exposure to air and light
- Melting point
- 43–45 °C
- Boiling point
- 200 °C
- Flash point
- ~87 °C
- Solubility
- Slightly soluble in waterAbout 7.4 g/L at 25 °C; freely soluble in ethanol, acetone and ether
- Purity
- 99.5% min
- Moisture
- 0.2% max
- Synonyms
- PTp-Aminotoluene · 4-Aminotoluene · p-Methylaniline
- Product form
- Flakes or fused solid — drums and bags
- Documentation
- COA, MSDS & TDSSupplied with every order
Product overview
What is Para Toluidine?
Para Toluidine (p-toluidine, 4-methylaniline, PT) is the para isomer of the three toluidines — aniline carrying a methyl group opposite the amine. It is a workhorse pigment and dye intermediate: sulphonated to 4B acid for Lithol Rubine, or nitrated to 4-methyl-2-nitroaniline for Toluidine Red and Hansa Yellow. It is also used for agrochemicals and for amine accelerators in resins and adhesives.
With the formula C7H9N (CAS 106-49-0), PT forms colourless to light-yellow lustrous flakes that melt at about 44 °C — so it is handled as a solid but easily melted for charging. It is made by reducing 4-nitrotoluene, the same nitro-reduction route used for Para Chloro Aniline.
Unlike the liquid ortho and meta isomers, the symmetrical para isomer is a solid, and buyers specify it by assay, setting point and residual o- and m-toluidine — the isomers most likely to shift shade in a pigment or selectivity in a synthesis.
How it is made
Toluene is nitrated to a mixture of nitrotoluenes, from which 4-nitrotoluene is separated. It is then reduced — by catalytic hydrogenation or iron reduction — to p-toluidine, which is purified by distillation and flaked.
What that means for your process
- Free amino group for diazotisation, acylation and N-alkylation
- Para position blocked by methyl — sulphonation and nitration go ortho to the amine
- o- and m-Toluidine controlled to grade, checked by GC
- Low-melting solid — easy to melt and charge as a liquid
Applications
What is Para Toluidine used for?
PT is used as an intermediate in the synthesis of pigments, dyes, agrochemicals, pharmaceuticals and polymer additives. Its main applications, industry by industry, include:
Pigments & dyes
The main use. PT supplies the diazo component for several high-volume organic pigments.
- 4B acid for Lithol Rubine (Pigment Red 57:1)
- 4-Methyl-2-nitroaniline for Toluidine Red (PR 3) and Hansa Yellow G (PY 1)
- Azo dye intermediates
Agrochemicals & pharma
Provides the p-tolyl group in selected crop-protection and pharmaceutical molecules.
- Fungicide intermediates, e.g. the p-tolyl sulphamide for tolylfluanid
- Building block for API and custom synthesis
Polymers & specialty
N-alkylated to the amine accelerators used to cure resins and adhesives.
- N,N-Dimethyl-p-toluidine for acrylic, dental and bone-cement curing
- Accelerators for unsaturated polyester resins
- Reagent in analytical and research work
Process route
How is Para Toluidine used downstream?
PT enters a synthesis as the amine. It is sulphonated, nitrated (after protection) or N-alkylated, the intermediate is diazotised and coupled or finished directly, and the p-tolyl group carries through into the pigment, active or accelerator.
Para Toluidine
Charged as flakes or melt. Assay and isomer content decide shade and yield.
C7H9NFunctionalisation
Sulphonation, protected nitration or N-alkylation builds the working intermediate.
4B acid / nitro-toluidine / DMPTCoupling or finishing
Diazotised intermediates are coupled to BON acid, 2-naphthol or acetoacetanilide; alkylated amines are purified directly.
Azo chromophore or amineFinished product
Laked, filtered and finished into the pigment, dye, accelerator or active.
Pigment, dye or additiveIn depth
Para Toluidine applications by industry
Below is a detailed breakdown of where PT is used and the role it plays in each downstream product.
| Industry | Typical downstream products | Role of PT |
|---|---|---|
| Pigments | Lithol Rubine — Pigment Red 57:1 | Via 4B acid |
| Pigments | Toluidine Red (PR 3), Hansa Yellow G (PY 1) | Via 4-methyl-2-nitroaniline |
| Dyes | Azo dyes | Diazo component |
| Agrochemicals | Tolylfluanid (fungicide) | p-Tolyl building block |
| Polymers | N,N-Dimethyl-p-toluidine accelerators | Precursor |
| Fine chemicals | Custom molecules, analytical reagents | Precursor |
Safety
Is Para Toluidine hazardous?
Yes. p-Toluidine is toxic if swallowed, in contact with skin or if inhaled, may cause an allergic skin reaction, causes serious eye irritation, is suspected of causing cancer and is very toxic to aquatic life. It is absorbed through the skin and can cause methaemoglobinaemia. With correct PPE, ventilation and containment it is safely handled in industry.
PT should be stored in sealed containers in a cool, dry, dark and well-ventilated place away from acids, acid chlorides, anhydrides and strong oxidisers. Because it melts at about 44 °C, avoid hot stores that cause caking, and keep melting operations enclosed and ventilated. Prevent release to drains and waterways. A full MSDS is supplied with every order.
Signal word: Danger
Toxic by all routes · suspected carcinogen · very toxic to aquatic life
Safe-handling essentials
- Chemical-resistant gloves, goggles and protective clothing — PT is absorbed through the skin
- Use local exhaust ventilation, especially when melting or charging
- Keep containers sealed, cool and out of direct light
- Store below its melting point (about 44 °C) to prevent caking
- Store away from acids, acid chlorides, anhydrides and oxidisers
- Never allow release to drains, soil or waterways
- Transport as UN 3451 — a regulated dangerous good
Grades
Para Toluidine grades & technical specifications
We supply PT in technical and high-purity grades to match pigment, dye, agrochemical and polymer requirements.
| Parameter | Specification |
|---|---|
| Assay (purity) | 99.5% min |
| Appearance | Colourless to light-yellow flakes |
| Setting point | 43 °C min |
| o-Toluidine | As per grade |
| m-Toluidine | As per grade |
| Moisture | 0.2% max |
| Colour | As per grade |
| Product form | Flakes or fused solid — drums and bags |
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 drums or 25 kg lined bags; larger drums of fused material on request.
Minimum order quantity
Flexible — single drums for trials through to full-container loads.
Shelf life
Long shelf life in sealed packs stored cool, dry and dark — kept well below 44 °C to prevent caking.
Dispatch
Pan-India dispatch and worldwide export with complete documentation and logistics support.
Why buy from us
Why choose Chelora as your PT supplier?
As an established Para Toluidine 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
99.5% 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
Trial packs for process work through to repeat container loads on schedule.
Worldwide supply
Export-grade packing, 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 and charging, PPE and process fit from a team that knows aromatic amines.
One point of contact
Source PT alongside your other intermediates — one enquiry, one team, one invoice.
Ordering
How to order Para Toluidine 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 Toluidine 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 | Toxic (oral / dermal / inhalation); skin sensitiser; eye irritant; suspected carcinogen; very toxic to aquatic life |
| Signal word | Danger |
| First aid — inhalation | Move to fresh air; seek medical help |
| First aid — skin | Remove contaminated clothing; wash with soap & plenty of water; get medical advice |
| First aid — eyes | Rinse with water for at least 15 minutes; get medical advice |
| First aid — ingestion | Rinse mouth; call a doctor immediately — watch for cyanosis (methaemoglobinaemia) |
| Handling | Use PPE; avoid dust and vapour; ventilate |
| Storage | Cool, dry, dark, sealed; away from acids and oxidisers |
| Decomposition | Emits nitrogen oxides and carbon oxides on burning |
| Environment | Prevent release to drains / waterways |
| Transport | UN 3451; class 6.1; PG II; regulated dangerous good |
Certificate of Analysis (representative)
| Test parameter | Specification | Method |
|---|---|---|
| Assay (purity) | 99.5% min | GC |
| Appearance | Colourless to light-yellow flakes | Visual |
| Setting point | 43 °C min | Setting-point apparatus |
| Isomer content (o- / m-toluidine) | As per grade | GC |
| Moisture | 0.2% max | Karl Fischer |
The actual batch COA is supplied with each shipment.
FAQ
Frequently asked questions
Common questions from buyers specifying Para Toluidine for pigment, dye, agrochemical and polymer production.
What is Para Toluidine used for?
PT is used mainly as a pigment and dye intermediate — via 4B acid for Lithol Rubine and via 4-methyl-2-nitroaniline for Toluidine Red and Hansa Yellow — and also for agrochemicals such as tolylfluanid, pharmaceuticals and N,N-dimethyl-p-toluidine resin accelerators.
What is the CAS number of Para Toluidine?
The CAS number is 106-49-0 and the molecular formula is C7H9N. It is also known as p-toluidine, 4-methylaniline, 4-aminotoluene or p-methylaniline.
How is Para Toluidine manufactured?
By reducing 4-nitrotoluene, usually by catalytic hydrogenation. The nitrotoluene is made by nitrating toluene and separating the para isomer from ortho- and meta-nitrotoluene.
Is Para Toluidine hazardous?
Yes. It is toxic by ingestion, skin contact and inhalation, a skin sensitiser, suspected of causing cancer and very toxic to aquatic life. It must be handled with proper PPE, ventilation and containment; we supply a full MSDS with every order.
What is the difference between para, ortho and meta toluidine?
They differ in where the methyl group sits. o- and m-Toluidine are liquids; the more symmetrical p-toluidine is a solid melting near 44 °C. o-Toluidine goes mostly into herbicide anilines such as methyl ethyl aniline, while p-toluidine goes mostly into pigments, dyes and accelerators.
How should Para Toluidine be stored?
In sealed drums or bags in a cool, dry, dark and well-ventilated store, away from acids and oxidisers. Keep it below its melting point (about 44 °C) to avoid caking, and keep packs closed, as the solid darkens with air and light.
Do you provide COA and MSDS for PT?
Yes, we provide a batch-specific COA and MSDS with every order, plus technical support on request.
Do you supply and export Para Toluidine?
Yes, we supply PT across India and export internationally with complete documentation, sourced from reliable manufacturers.
Request a quote or sample
Need a reliable Para Toluidine supplier?
Looking for a dependable Para Toluidine (4-methylaniline) 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