Tris(4-nitrophenyl)amine

CAS No.

20440-93-1

Synonyms

4-Nitro-N,N-bis(4-nitrophenyl)aniline; TNPA

Molecular formula

C18H12N4O6

Molecular weight

380.31 g/mol

Grade

Technical grade

Packaging

Sealed PE bag / Fiber drum with PE liner
SKU FM-268 Category

Chemical Product Description & Applications

Tris(4-nitrophenyl)amine is a three-armed aromatic intermediate containing a central triarylamine nitrogen and one para-nitro group on each phenyl ring. The preassembled framework supplies three equivalent terminal functional sites. Reduction of those nitro groups gives the corresponding aromatic triamine without reconstructing the central branched skeleton.

The selected compound is the nitro precursor, not tris(4-aminophenyl)amine itself. Its value in synthesis is the combination of a defined three-arm geometry and reducible terminal groups. Conversion to the triamine creates primary amino sites for subsequent condensation or acylation chemistry. This separates construction of the branched aromatic core from the later formation of polymer or porous-framework connections.

Typical Applications

  • Tris(4-aminophenyl)amine preparation: Used as the nitro-functional starting material in reduction routes to TAPA, an amine building block for subsequent polymer and covalent-organic-framework synthesis.

Specifications

Parameter Specification Test Method
Appearance Solid; color consistent with the reference sample Visual inspection
Identification Consistent with authenticated reference FTIR fingerprint comparison
Chromatographic purity ≥98.0 area% HPLC with suitable UV or CAD detection
Total organic impurities ≤2.0 area% HPLC, area normalization
Largest individual impurity ≤1.0 area% HPLC, area normalization
Water ≤1.0% w/w Karl Fischer titration

Specifications describe the standard grade. Tolerance, test method and documentation package are confirmed per order.

Documents & Handling

Packaging

Sealed PE bag / Fiber drum with PE liner

What You Get With This Product

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CoA

Certificate of Analysis

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TDS

Technical Data Sheet

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SDS

Safety Data Sheet

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