Methyl Ethyl Aniline N-Ethyl-N-methylaniline · CAS 613-97-8

What is Methyl Ethyl Aniline?

Methyl Ethyl Aniline, chemically N-Ethyl-N-methylaniline, is a tertiary aromatic amine with the formula C₉H₁₃N. At room temperature it is a colourless to light yellow liquid with a weak amine odour, boiling around 204 °C and only slightly soluble in water.

Its value comes from the aniline nitrogen carrying both an ethyl and a methyl substituent, which makes it a fully alkylated, non-primary aromatic amine: the ring remains electron-rich and reactive toward electrophilic substitution and diazo coupling, while the nitrogen itself is tertiary and cannot be further N-alkylated or oxidised the way a primary or secondary aniline can. That combination makes it a clean, selective building block for dye, pigment and fine-chemical synthesis.

Commercially, it is made by sequential alkylation of aniline — ethylation followed by methylation, or N-methylation of N-ethylaniline — using standard amine-alkylation chemistry. It is supplied as a liquid, typically 98% minimum purity by GC.

It is not classified as a carcinogen or mutagen, but it is a combustible liquid and an eye, skin and respiratory irritant with potential for organ effects on repeated exposure, which governs its handling and storage requirements.

Why Methyl Ethyl Aniline specifically

• A fully alkylated tertiary amine. Both N-H positions of aniline are substituted, giving a stable, non-oxidising nitrogen that still activates the ring for coupling reactions.
• Clean diazo coupling. The electron-rich ring couples efficiently with diazonium salts, making it a workhorse intermediate for azo dyes and pigments.
• A versatile building block. It is used directly or further functionalised (ring nitration, sulfonation, halogenation) to build a wide range of colorant and fine-chemical intermediates.
• Research and pharma utility. Its well-defined reactivity makes it a useful building block in laboratory-scale and pharmaceutical intermediate synthesis as well as bulk dye manufacture.

How Methyl Ethyl Aniline is Manufactured

Methyl Ethyl Aniline is made on purpose by sequential N-alkylation of aniline, so supply tracks the monomer's own feedstocks and installed capacity rather than an unrelated petrochemical stream.

• N-Ethylation of aniline. Aniline is reacted with an ethylating agent (ethanol under catalytic conditions, or an ethyl halide) to give N-ethylaniline.
• N-Methylation. N-Ethylaniline is then methylated, typically with methanol under catalytic conditions or with a methylating agent, to give N-Ethyl-N-methylaniline.
• Neutralisation and separation. The reaction mass is neutralised, and the product is separated from unreacted aniline, mono-alkylated intermediates and alkylating-agent by-products.
• Distillation. The crude amine is vacuum- or atmospheric-distilled to the target purity, removing lighter and heavier by-products.
• Stabilisation and packing. Because the amine is sensitive to air and light, it is packed under inert gas where required and stored away from light.

Typical Commercial Specification

Figures below are representative of commercial-grade Methyl Ethyl Aniline. Tell us your downstream route and the grade you need, and we will advise on the specification to order against.

Physical & Chemical Properties

Behaviour in the process

Methyl Ethyl Aniline's reactivity pattern is what downstream chemists are buying:

• Diazo coupling. The electron-rich ring couples efficiently with diazonium salts at the position para to nitrogen, the basis of its use in azo dye and pigment synthesis.
• No further N-alkylation. Both N-H positions are substituted, so the nitrogen is tertiary and stable — it will not react further at nitrogen the way primary or secondary anilines can.
• Ring electrophilic substitution. Nitration, sulfonation and halogenation proceed readily on the activated ring, giving access to a range of substituted intermediates.
• Air and light sensitivity. Like many tertiary anilines, it oxidises and darkens slowly on exposure to air and light, which is why colour is specified and inert packing is used where needed.

Methyl Ethyl Aniline and Related Aniline Derivatives

Methyl Ethyl Aniline sits in a family of N-alkylated anilines, and the choice between them depends on the coupling chemistry and the substituent pattern the finished product needs.

Stated plainly: the N,N-dialkylanilines are not freely interchangeable — each gives a different colour shade, coupling rate and solubility in the finished dye or pigment, so a formulation built around Methyl Ethyl Aniline is rarely a drop-in swap for its dimethyl or diethyl relatives.

Industries We Supply Methyl Ethyl Aniline To

The same liquid amine goes to a dye-intermediate works, a pigment plant and a fine-chemical manufacturer. What changes is the downstream coupling chemistry and the documentation each requires.

Where Methyl Ethyl Aniline is Used

Methyl Ethyl Aniline is bought almost entirely as a coupling and synthesis intermediate rather than a standalone chemical. These are the end uses our customers build it into.

In dye and pigment manufacture

Methyl Ethyl Aniline is diazo-coupled with aromatic diazonium salts to build azo dyes and pigments. Its N-ethyl-N-methyl substitution gives a specific colour shade and solubility profile that distinguishes it from the dimethyl- and diethylaniline couplers, so formulators specify it deliberately rather than substituting a relative.

In pharmaceutical and fine-chemical synthesis

Its well-defined, non-oxidising tertiary amine nitrogen and electron-rich ring make it a convenient building block where a stable, reactive aromatic amine is needed without the complications of a primary or secondary aniline.

Quality Control & Testing

Every lot is released against a batch-specific Certificate of Analysis, with colour and residual-amine figures reported alongside purity because both carry through into the finished dye or intermediate.

• N-Ethyl-N-methylaniline content — by gas chromatography, the primary grade measure.
• Residual aniline and N-ethylaniline — reported as under-alkylated process impurities.
• Water content — measured because moisture affects coupling reactions and storage stability.
• Colour (Hazen / APHA) — tested because darkening carries straight through to the finished product.
• Density and boiling range — checked as fast purity and identity indicators.

Common Process Problems & Likely Causes

When this amine causes trouble, it is usually colour, moisture or residual under-alkylated amine. This table is the shortcut our technical desk works through before anyone opens a complaint file.

Packaging, Storage & Shipping

• Standard packing. HDPE or lined steel drums, typically 200 – 225 kg net, or IBC totes and ISO tanks for bulk orders.
• Light and air protection. Store in closed, opaque or shaded containers; where colour tolerance is tight, request a nitrogen-blanketed drum.
• Temperature control. Store at room temperature, away from direct sun and heat sources, above its melting point (about −7 °C) to keep it liquid.
• Material compatibility. Avoid contact with strong oxidisers and strong acids.
• Shelf life. Typically 12 months in sealed, properly stored containers; re-test colour on older stock rather than assume.
• Transport. Generally shipped as a combustible liquid, not usually classified under the most restrictive dangerous-goods categories; confirm classification with your carrier for your specific lane.

Hazards & Safe Handling

Methyl Ethyl Aniline is not classified as a carcinogen or mutagen. It is harmful if swallowed, in contact with skin or if inhaled, causes skin and eye irritation, and may cause organ damage on prolonged or repeated exposure, which governs the PPE and ventilation requirements.

• Acute toxicity. Harmful if swallowed, in contact with skin or if inhaled; avoid all three routes of exposure.
• Skin and eye contact. Causes skin and eye irritation. Wear chemical-resistant gloves and goggles; rinse thoroughly with water on contact.
• Repeated-exposure effects. May cause organ damage through prolonged or repeated exposure; limit exposure duration and use appropriate ventilation.
• Vapour and mist. Avoid breathing mist or vapours; use local exhaust ventilation where handling in open systems.
• Combustibility. Flash point about 74 °C; keep away from open flames and ignition sources.
• PPE. Chemical-resistant gloves, safety goggles and, where vapour exposure is possible, appropriate respiratory protection.
• Environment. Avoid uncontrolled release to water; follow local effluent and waste-disposal rules.

Regulatory & Compliance Notes

Methyl Ethyl Aniline is a registered industrial chemical with standard handling considerations rather than the heightened controls that apply to carcinogens or acutely toxic gases. Because obligations differ by territory and use, the notes below are orientation rather than legal advice — confirm your own position with your regulatory adviser.

• GHS classification. Typically classified with the "Warning" signal word for acute toxicity (oral/dermal/inhalation), skin and eye irritation, and possible organ effects on repeated exposure. The SDS carries the full hazard statements for your grade.
• REACH and chemical inventories. Registered under EU REACH and listed on major chemical inventories.
• Transport. Generally moves as a combustible liquid rather than under the most restrictive dangerous-goods classes; confirm with your carrier for your specific lane.
• HS code. Commonly declared under the aromatic monoamine derivatives heading; confirm the exact tariff line with your customs broker for your jurisdiction.
• Quality agreements. Dye and pharma intermediate producers commonly expect documented purity, colour and water limits and change control. Tell us what your agreement requires.

We Supply Methyl Ethyl Aniline Worldwide

Chelora Chemicals is a supplier and export partner, not a single-plant trader. We ship Methyl Ethyl Aniline from India and from partner sources to customers across Asia, Europe, the Middle East, Africa, and North and South America, handling the export documentation and freight so the material arrives ready to use.

• Incoterms. EXW, FOB, CIF, CFR and DAP quoted to suit your purchasing terms and freight arrangements.
• Ports. Regular shipments through Nhava Sheva (JNPT) and Mundra, with other ports arranged as routing allows.
• Documentation. Commercial invoice, packing list, certificate of origin, COA and SDS issued as a complete set.
• Flexible volumes. From drum trial quantities up to repeat bulk shipments on a supply contract.
• Supply continuity. Because we are independent of any one producer, a plant turnaround or a shipping disruption at one source does not have to become your stock-out.

Buying Methyl Ethyl Aniline from Chelora

We are an independent sourcing and supply partner. For this product that means settling three things at enquiry: the purity and colour tolerance your process needs, the packing format that protects it from light and air, and the quantity you are buying.

• Documentation on every lot. Batch-specific COA with purity, residual amine, water and colour, plus the current SDS.
• Analysis before commitment. Representative analysis shared ahead of a commercial order so your lab can qualify the material.
• Packing options. Standard drums or nitrogen-blanketed packing for colour-critical applications.
• Quantities. Drum trial quantities through to full bulk shipments on contract supply.
• Inspection. Independent third-party inspection available at loading when the contract requires it.
• Related amines. N,N-Dimethylaniline, N,N-diethylaniline and N-ethylaniline alongside this product from one supplier.

How ordering works

• Send the enquiry. Purity, colour tolerance, quantity, destination port and the Incoterm you buy on. If you have a spec sheet, attach it — it saves a round trip.
• We quote. Price, lead time, packing format and a sample COA, normally within one working day.
• Qualify the supply. For first orders or colour-critical applications, we share the analysis so your technical team can sign off before you commit.
• Confirm the order. Proforma invoice issued; payment terms agreed against the volume and the relationship.
• Allocation and QC. Material allocated and released against a batch-specific COA, with an independent inspection where the contract calls for it.
• Ship and document. Packed, labelled and loaded with the full export document set, and tracked through to arrival.

Related Aniline Derivatives & Dye Intermediates

Buyers of Methyl Ethyl Aniline often source related N-alkylated anilines and dye-intermediate anilines alongside it. Consolidating them cuts freight cost and gives you a single point of contact for documentation.