Ortho EthylAniline
A high-purity alkylated aromatic amine supplied as a liquid for pharmaceutical, agrochemical, dye and rubber-chemical intermediate synthesis.
What is Ortho Ethyl Aniline?
Ortho Ethyl Aniline — OEA, or 2-ethylaniline — is a colourless to pale yellow liquid with an ethyl group next to the amino group on a benzene ring.
The ethyl group donates electron density and adds bulk beside the nitrogen. That makes OEA a useful starting point for indole and quinoline ring-building, and for hindered amides used in pharmaceutical and crop-protection chemistry.
At Chelora Agrochem, OEA is distilled to high assay and low colour, with isomer content and moisture held to specification.
Quick facts
- Appearance
- Colourless to pale yellow liquid
- Odour
- Characteristic amine odour
- Solubility
- Slightly soluble in water; soluble in organic solvents
- Function
- Chemical intermediate
- Grade
- Technical
Formula diagram
Aniline ring with an ethyl group in the ortho position
- Molecular formulaC8H11N
- Molecular weight121.18 g/mol
- IUPAC name2-Ethylaniline
- Functional groupsPrimary aromatic amine, alkyl
- CAS number578-54-1
Technical product information
Standard specification for Chelora Agrochem's technical grade Ortho Ethyl Aniline. Custom-grade and bulk specifications are available on request.
| Chemical name | Ortho Ethyl Aniline |
|---|---|
| Synonyms | OEA, 2-Ethylaniline, o-Ethylaniline, 2-Aminoethylbenzene |
| CAS number | 578-54-1 |
| Molecular formula | C8H11N |
| Molecular weight | 121.18 g/mol |
| Assay (purity) | ≥ 99.0% |
| Appearance | Colourless to pale yellow liquid |
| Density (20 °C) | approx. 0.98 g/cm³ |
| Boiling point | 209–211 °C |
| Melting point | approx. −44 °C |
| Isomer content | ≤ 0.5% |
| Moisture | ≤ 0.2% |
| Packaging | 200 kg drums, 1000 kg IBC |
| Shelf life | 12 months in sealed original packaging |
Applications of Ortho Ethyl Aniline
Pharmaceutical intermediates
A starting amine for indole-based API routes, including 7-ethyltryptophol chemistry.
Agrochemical intermediates
Supplies an ortho-alkyl aniline fragment to herbicide and fungicide actives.
Dyes & pigments
Diazotised as an alkylated colour base.
Rubber chemicals
Used in amine-based antioxidant and accelerator synthesis.
Heterocyclic synthesis
Cyclised into indoles, quinolines and related ring systems.
Specialty chemicals
A building block for custom synthesis requiring an ortho-ethyl aniline.
Why choose Chelora Agrochem
Every batch of Ortho Ethyl Aniline is manufactured, tested and documented to a standard that formulators and process chemists can build on with confidence — from first sample to full production volume.
Consistent purity
Assay controlled at ≥99% with isomer content, colour and moisture verified before dispatch.
Full documentation
COA, SDS and regulatory data supplied with every shipment.
Flexible volumes
From 200 kg drums to IBC quantities, with samples on request.
Technical support
Process, handling and compliance guidance from our chemistry team.
Storage and guidelines
- 01Store in tightly sealed original containers, under nitrogen where possible.
- 02Keep in a cool, dry, well-ventilated area away from heat, ignition sources and direct sunlight.
- 03Protect from air and light — the liquid darkens on oxidation.
- 04Segregate from strong oxidising agents, acids and acid chlorides.
- 05Use compatible containers: stainless steel, lined steel or HDPE.
- 06Re-seal drums promptly after use and prevent any release to drains, surface water or soil.
Handling precautions
OEA is a toxic aromatic amine that is harmful by inhalation, ingestion and skin contact. It is for industrial use by trained personnel only.
Aromatic amines are absorbed through intact skin and can affect the blood by forming methaemoglobin. Chemical-resistant gloves, coveralls, eye protection and, where needed, respiratory protection are required.
Use local exhaust ventilation for drum decanting, charging and any heated operation; avoid breathing vapour or mist.
The product is toxic to aquatic life. Contain all spills and dispose of waste through licensed chemical waste routes.
Refer to the full Safety Data Sheet for exposure limits, spill response and first-aid measures before use.
Frequently asked questions
It is an intermediate for pharmaceuticals (including indole-based routes), agrochemicals, dyes and rubber chemicals.
Both carry an alkyl group next to the amine, but OEA's ethyl group is larger than toluidine's methyl. That changes steric hindrance, reactivity and the final molecule, so they are not interchangeable.
Yes. It melts well below 0 °C and is supplied and handled as a liquid in drums and IBCs.
Only slightly. It dissolves readily in alcohols, ethers and aromatic solvents, and in dilute mineral acid, so reactions are normally run in organic media or after acid dissolution.
Aromatic amines oxidise slowly on contact with air and light, forming coloured impurities. Assay is usually unaffected, but sealed, cool, dark storage under nitrogen preserves colour for sensitive applications.
Standard grade is supplied at a minimum assay of 99% with isomer content at or below 0.5% and moisture at or below 0.2%. Tighter specifications can be produced to a customer specification sheet.
200 kg drums and 1000 kg IBCs. Samples are available for trial and development work.
Yes. Like other aromatic amines it is toxic by several routes, absorbed through skin and hazardous to aquatic life. Trained personnel, engineering controls and full PPE are required per the Safety Data Sheet.
Yes. Every batch is dispatched with a Certificate of Analysis and Safety Data Sheet covering assay, impurity profile, moisture and appearance.
Request a sample or quote
Talk to our team about volumes, documentation and lead times for Ortho Ethyl Aniline. We usually reply within 24 hours.