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Description
TCI D4628 is 2,5-Diaminotoluene, an aromatic compound carrying two primary amine groups on a toluene ring, also known as toluene-2,5-diamine. It is classified as a non-heterocyclic building block, meaning a carbon-ring-based starting material with no heteroatoms inside the ring itself. In everyday laboratory practice, aromatic diamines of this kind serve as starting materials for the formation of azo compounds, polyamides and polyimides, coordination complexes, and a wide range of derivatives obtained through acylation and alkylation reactions.
Because the molecule carries two nucleophilic centres at once, it is frequently used to build branched structures, oligomers, and conjugated systems. The main property that governs how it is used is the electron richness of the aromatic ring, a consequence of the two electron-donating amine groups, which makes the compound highly reactive toward electrophiles and at the same time readily oxidised by air and light. For this reason the material commonly shows colour change when exposed to an open environment, and its quality must be protected through proper storage. The methyl group on the ring introduces a degree of steric hindrance and influences the direction of substitution reactions, while the two amine groups can be converted into amides and imides.
In Indonesian laboratories, this type of building block is typically used in synthetic organic chemistry work, polymer research, and dye or colourant studies at universities, research institutes, and industrial R&D units. It is normally handled in small to moderate quantities within a fume hood as part of multi-step synthesis routes, with the remaining material returned promptly to controlled storage so that the reagent stays usable across a series of experiments rather than degrading between runs.
Laboratory Applications
- Azo compound synthesis — the two primary aromatic amine groups provide the reactive centres needed to form azo linkages, making this a direct starting material for dye and colourant chemistry.
- Polyamide and polyimide preparation — as a difunctional aromatic diamine it can be coupled with acid or anhydride partners to build repeating polymer chains for materials research.
- Coordination complex chemistry — the two amine nitrogens act as donor sites for metal centres, allowing the compound to be used as a ligand precursor in complex formation studies.
- Acylation and alkylation derivatisation — both amine groups can be converted into amides, imides, and alkylated products, giving researchers a flexible platform for preparing structurally varied derivatives.
- Branched, oligomeric, and conjugated system construction — carrying two nucleophilic centres on an electron-rich aromatic ring makes it suitable for assembling multi-arm and extended conjugated architectures.
Specifications
- Brand: TCI
- CAS number: 95-70-5
- Chemical name: 2,5-Diaminotoluene (toluene-2,5-diamine)
- Category: Chemistry > Building Blocks > Non-Heterocyclic Building Blocks
- Pack sizes: available in standard TCI catalogue pack sizes; please confirm the required size when ordering
- Storage note: keep in a tightly closed container, protected from air and light, to prevent oxidation and colour change
Handling and Storage
Store the material in a tightly sealed original container, kept away from air and light, since the electron-rich aromatic ring is readily oxidised and the reagent may darken or change colour when exposed to an open environment. Amber glass or the supplied opaque container in a cool, dry, well-ventilated storage cabinet is appropriate, and headspace exposure should be minimised by closing the container promptly after each use. Handle the compound inside a fume hood using gloves, safety glasses, and a laboratory coat, and avoid skin contact and dust inhalation. Weigh only what is required, return the remainder to storage without delay, and consult the manufacturer's safety data sheet before use and disposal.
