2,6-Dichloro-4-nitroaniline
An aromatic amine flanked by two chlorines and para-activated by a nitro group, supplied as a diazo component for azo and disperse dye manufacture.
What is 2,6-Dichloro-4-nitroaniline?
2,6-Dichloro-4-nitroaniline is a yellow crystalline solid built on a benzene ring carrying a primary amine at C-1, chlorine atoms at C-2 and C-6, and a nitro group at C-4.
That substitution pattern is what makes the molecule such a reliable diazo component. The amine diazotises cleanly under standard acidic conditions, and the flanking chlorines together with the para nitro group give the resulting diazonium salt the stability profile needed for controlled coupling reactions that build azo and disperse dye chromophores.
At Chelora Dyes, 2,6-Dichloro-4-nitroaniline is crystallised and dried to a controlled particle profile and low moisture, so diazotisation and coupling reactions downstream run cleanly and give consistent, reproducible results batch to batch.
- Appearance
- Yellow crystalline
- Odour
- Faint, characteristic
- Solubility
- Acetone, DMF, hot alcohol
- Function
- Diazo component
- Grade
- Technical / dye
Symmetrically dichlorinated nitroaniline
- Molecular formulaC6H4Cl2N2O2
- Molecular weight207.01 g/mol
- IUPAC name2,6-Dichloro-4-nitroaniline
- Functional groupsAromatic amine, two aryl chloride, nitro
- CAS number99-30-9
Technical product information
Standard specification for Chelora Dyes' technical grade 2,6-Dichloro-4-nitroaniline. Custom-grade and bulk specifications are available on request.
| Chemical name | 2,6-Dichloro-4-nitroaniline |
|---|---|
| Synonyms | Dichloran, 1-Amino-2,6-dichloro-4-nitrobenzene, 26DCPNA |
| CAS number | 99-30-9 |
| Molecular formula | C6H4Cl2N2O2 |
| Molecular weight | 207.01 g/mol |
| Assay (purity) | ≥ 97.0% |
| Appearance | Yellow crystalline solid or powder |
| Melting point | 190–192°C |
| Moisture content | ≤ 0.5% |
| Insoluble matter | ≤ 0.2% |
| Solubility | Very slightly soluble in water; soluble in acetone, DMF and hot alcohol |
| Packaging | 25 kg / 50 kg bags, 500–1000 kg jumbo bags |
| Shelf life | 24 months in sealed original packaging |
Applications of 2,6-Dichloro-4-nitroaniline
Azo dye diazo component
Diazotised and coupled to build azo chromophores used across disperse and other dye classes.
Disperse dye synthesis
A common diazo building block for disperse dyes used on polyester and synthetic fibres.
Dye & pigment chemistry
Feeds intermediates used across dye, pigment and specialty colourant manufacture.
Agrochemical intermediates
Used as a synthesis intermediate in the manufacture of certain agrochemical actives.
Analytical reagents
Used as a reference reagent in analytical and laboratory-scale synthesis work.
Custom synthesis
Supplied to order for custom manufacturing and contract synthesis projects.
Why choose Chelora Dyes
Consistent purity
Assay controlled at ≥97% with moisture and colour verified before dispatch.
Full documentation
COA, SDS, and regulatory data supplied with every shipment.
Flexible volumes
From 25 kg bags to jumbo-bag bulk quantities.
Technical support
Process, diazotisation, and compliance guidance from our chemistry team.
Storage and guidelines
- Store in tightly sealed original packaging in a dry environment.
- Keep in a cool, dry, well-ventilated area away from direct sunlight and heat.
- Segregate strictly from strong oxidising agents and reducing agents.
- Protect from moisture pickup and avoid contact with incompatible metals.
- Use compatible containers: lined HDPE bags or drums.
- Re-seal bags promptly after use to preserve assay specification.
Handling precautions
2,6-Dichloro-4-nitroaniline is classified as toxic and a possible environmental hazard; contact and inhalation should be strictly avoided.
Use closed handling equipment, dust and vapour extraction, and full PPE including chemically resistant gloves, goggles and, where indicated by the risk assessment, respiratory protection during weighing, charging and any bulk handling operation.
Keep away from strong oxidisers, strong bases and sources of ignition.
Refer to the full Safety Data Sheet for exposure limits, spill containment, disposal, and first-aid measures before use.
Frequently asked questions
What is 2,6-Dichloro-4-nitroaniline used for?
2,6-Dichloro-4-nitroaniline is used chiefly as a diazo component in dye intermediate manufacture. Its aromatic amine is diazotised and coupled to build azo and disperse dye chromophores, and the compound is also used as a synthesis intermediate in agrochemical and pharmaceutical chemistry.
Why is this aniline useful as a diazo component?
The two flanking chlorine atoms and the para nitro group moderate the electron density of the amine, giving a diazonium salt with the stability and coupling behaviour needed for consistent, reproducible azo dye synthesis.
Is 2,6-Dichloro-4-nitroaniline soluble in water?
It has very low water solubility. It is more soluble in organic solvents such as acetone, DMF and hot alcohol, which is why diazotisation is typically carried out in an acidic aqueous-organic mixture.
What purity do you supply?
Standard technical grade is supplied at a minimum assay of 97%, with moisture and melting range held within tight limits. Higher assay grades can be manufactured to order.
What packaging sizes are available?
25 kg and 50 kg multiwall paper or HDPE-lined bags, with bulk supply available in 500 kg and 1000 kg jumbo bags.
How should it be stored, and for how long?
In sealed original packaging in a cool, dry, ventilated store away from strong oxidisers and reducing agents. Shelf life is 24 months from manufacture when storage conditions are maintained.
Is it hazardous to handle?
It is classified as toxic and a suspected environmental hazard and must be handled strictly according to its Safety Data Sheet, with closed handling, dedicated PPE and adequate ventilation.
Do you provide a Certificate of Analysis?
Yes. Each batch ships with a Certificate of Analysis and Safety Data Sheet covering assay, moisture, appearance and melting point.
