N,N,N',N'-Tetramethylbenzidine TCI T0141

Chemical Identity

CAS No.: 366-29-0
PubChem: CID 9702·SID 87576143
Formula: C16H20N2
Molecular weight: 240.34 g/mol
Purity: >98.0%(GC)(T)

Full identifiers (IUPAC, SMILES, InChIKey)

IUPAC: 4-[4-(dimethylamino)phenyl]-N,N-dimethylaniline
SMILES: CN(C)C1=CC=C(C=C1)C2=CC=C(C=C2)N(C)C
InChIKey: YRNWIFYIFSBPAU-UHFFFAOYSA-N

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TCI T0141 N,N,N',N'-Tetramethylbenzidine is a benzidine derivative with a dimethylamino group at each end of its biphenyl backbone. It is important not to confuse this compound with 3,3',5,5'-tetramethylbenzidine, the widely used ELISA substrate. In this compound the methyl groups are attached to the nitrogen atoms, not to the aromatic rings. In the laboratory, N,N,N',N'-tetramethylbenzidine is used as a non-heterocyclic building block, as an electron donor in studies of charge-transfer complexes, and as a model compound for studying how stable radical cations form.

Researchers choose this compound because it is a strong electron donor and oxidises easily and reversibly to a coloured radical cation. That change is simple to follow by spectrophotometry and electrochemistry. These properties make it useful as a redox indicator and as a donor component in research on charge-transporting organic materials. Its conjugated biphenyl framework links the two nitrogen centres electronically, which makes it an interesting model for electron-transfer studies. The compound is normally a solid and is sensitive to oxidation by air and by light, so it needs careful handling to stay reliable.

In Indonesian laboratories, this compound is mainly used in university chemistry departments, research institutes and materials science groups. These groups work on organic synthesis, physical organic chemistry and electrochemistry. Research teams studying charge-transfer complexes, radical cation chemistry or organic electronic materials can use it as a well-defined donor molecule. Teaching and research laboratories that run spectrophotometric or voltammetric experiments also find it a clear demonstration of reversible redox behaviour. Because the material is supplied under the TCI brand, users can work with a consistent, traceable reagent from a recognised manufacturer.

Related TCI products

Non-heterocyclic building block: the biphenyl core with two dimethylamino groups gives a symmetrical, electron-rich scaffold for building larger organic molecules in synthetic research.
Charge-transfer complex studies: as a strong electron donor, it pairs well with electron acceptors, so researchers can form charge-transfer complexes and study them by spectroscopy.
Radical cation model compound: it oxidises reversibly to a stable, coloured radical cation, which makes it a convenient model for studying how such cations form and behave.
Redox indicator: the clear colour change on oxidation is easy to observe by eye and to measure by spectrophotometry, so it can signal redox processes in experimental systems.
Organic charge-transport materials research: its electron-donating ability and conjugated framework make it a useful donor component when researching organic materials that conduct charge.

Brand	TCI (product code T0141)
CAS number	366-29-0
Molecular formula	—
Purity	—
Category	Chemistry > Building Blocks > Non-Heterocyclic Building Blocks
Pack sizes	available in TCI's standard pack sizes; please confirm the available options with AMI Scientific
Physical form	solid
Storage	sensitive to air and light; protect from oxidation

Store N,N,N',N'-Tetramethylbenzidine in a tightly closed container in a cool, dry place, protected from light. Because the compound is sensitive to oxidation by air, keep it in its original manufacturer packaging or in an amber glass container. Where possible, keep it under an inert gas such as nitrogen or argon, and reseal the container quickly after each use. Keep it away from strong oxidising agents. As a benzidine derivative, handle it with appropriate personal protective equipment, including gloves, safety glasses and a laboratory coat, and work in a fume hood to avoid inhaling dust or letting it touch your skin. Always check the supplier's Safety Data Sheet (SDS) before use, and dispose of waste according to local regulations.

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