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Description
TCI D2725 1,4-Diamino-2,3-dichloroanthraquinone is an anthraquinone derivative that carries two amino groups at the 1 and 4 positions together with two chlorine atoms at the 2 and 3 positions. The anthraquinone skeleton itself is one of the most important chromophore cores in dye chemistry, and the addition of amino groups at the alpha positions deepens the colour of the compound appreciably. As a non-heterocyclic building block, this material serves both as a starting material and as a reference compound for laboratories working on dyes, pigments, and luminescent materials.
The properties that make this compound a preferred choice are the combination of an extended conjugated system and functional groups that complement one another. The anthraquinone core, with its two carbonyl groups, provides a long pi-electron system, while the amino groups act as electron donors and establish a donor–acceptor relationship with the carbonyls, producing light absorption in the visible region. The two chlorine atoms at neighbouring positions withdraw electron density, shifting the spectral behaviour further, and at the same time act as reaction sites for nucleophilic substitution to install new groups. The thermal stability and colour fastness of the anthraquinone framework are the classic reasons why this family of compounds has endured.
In Indonesian laboratories, this building block is typically used in synthetic chemistry groups at universities and research institutes, as well as in the development laboratories of the dye, pigment, and coating industries. It is generally handled in small quantities on the bench for exploratory synthesis, structural modification, and the preparation of reference standards, then characterised by the usual spectroscopic and chromatographic methods available in the laboratory before the material is carried forward into further work.
Laboratory Applications
- Dye and pigment synthesis: the aminoanthraquinone core already absorbs strongly in the visible region, so it can be elaborated into coloured products without having to construct a chromophore from scratch.
- Nucleophilic aromatic substitution studies: the two adjacent chlorine atoms sit on an electron-poor ring and therefore act as convenient leaving groups for installing amines, thiols, or alkoxides in a controlled way.
- Preparation of luminescent and functional materials: the extended donor–acceptor pi system of the molecule makes it a useful precursor for laboratories developing compounds with tailored light-absorbing or light-emitting behaviour.
- Reference and comparison compound: a defined anthraquinone derivative of known identity is valuable for checking spectroscopic and chromatographic methods against a structure whose absorption behaviour is well understood.
- Structure–property investigation in teaching and research: the combination of electron-donating amino groups and electron-withdrawing chlorine atoms on one framework illustrates substituent effects on colour and reactivity very clearly.
Specifications
- Brand: TCI
- CAS number: 81-42-5
- Chemical name: 1,4-Diamino-2,3-dichloroanthraquinone
- Product code: D2725
- Category: Chemistry > Building Blocks > Non-Heterocyclic Building Blocks
- Pack sizes: available in the standard catalogue pack sizes offered for this product; please confirm the required pack when ordering
- Storage: keep in the tightly closed original container under the conditions stated on the manufacturer's label and safety data sheet
Handling and Storage
Store the container tightly closed in a cool, dry, and well-ventilated place, away from direct sunlight, heat sources, and incompatible chemicals, following the conditions given on the manufacturer's label and safety data sheet. The original supplier container is the most suitable primary packaging; if the material is transferred, use a clean, chemically compatible and clearly labelled container that closes securely. Handle the solid in a fume hood to avoid generating and inhaling dust, and wear a laboratory coat, safety goggles, and suitable chemical-resistant gloves. Avoid contact with skin and eyes, keep the working area clean, and collect any residues and contaminated materials as chemical waste in accordance with local laboratory procedures. Always review the safety data sheet before first use.
![1,1'-Iminodianthraquinone [for Determination of Boron] (CAS 82-22-4) - TCI D0133 - AMI Scientific](http://amiscientific.com/cdn/shop/files/TCI2510D0133.jpg?v=1767100907&width=533)
