4-Ethynylaniline

Name: 4-Ethynylaniline
Brand: Royalchem
Rating: 5.0 (46 reviews)

CAS NO. 14235-81-5

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Model:
Purity ≥99%
Brand:
Royalchem
Code:
14235-81-5

Product Description

Product Name	4-Ethynylaniline CAS: 14235-81-5 Synonyms: 4-Aminophenylacetylene; 1-Amino-4-ethynylbenzene; para-ethynylaniline Isomer: para-substituted aminophenylacetylene
Formula / MW	C₈H₇N / 117.15 g/mol
Structure	The amino and ethynyl groups occupy the para positions on the benzene ring. Click to view the full-size structure.
Product Type	Amino-functional terminal alkyne / organic synthesis building block
Specification	Appearance: Yellow to brown crystalline powder Purity: ≥99% Water: ≤2% Sodium (Na): ≤150 ppm Iron (Fe): ≤100 ppm Listed grade specification. Confirm the agreed specification and analytical methods, and review the batch COA before ordering.
Reference Property	Melting point: 98–102 °C, with decomposition (literature). This reference property is separate from the supplied-grade acceptance limits.
Applications	Organic synthesis: A building block combining an aromatic amino group with a terminal alkyne for further functionalization and coupling studies. Polymer end-capping: Reported as an ethynyl end-capping reagent in polyisoimide and polyimide research. Resin performance depends on the backbone, formulation and processing conditions. Alkyne chemistry: A reagent for condition-specific coupling and click-chemistry studies. Reaction suitability should be evaluated for the selected substrates and conditions.
Packing & Storage	Packing: Confirm the required net weight and container with your quotation. Storage, handling and transport: Follow the current SDS for the supplied product and confirm any temperature requirements before dispatch.
Documentation	Contact Royalchem to request the current specification, batch COA and SDS. Please state any additional impurity limits or analytical methods required for your project.

Sourcing 4-Ethynylaniline (CAS 14235-81-5)?
Royalchem supplies 4-Ethynylaniline with listed purity ≥99% and specified sodium and iron limits. Contact us for specifications and a bulk quotation. Please state your application, packaging and quantity.

FAQ

What is 4-Ethynylaniline?	4-Ethynylaniline, CAS 14235-81-5, is an aniline derivative with an ethynyl group in the para position. It is also called 4-Aminophenylacetylene or 1-Amino-4-ethynylbenzene.
Is it the same as 3-Ethynylaniline?	No. The 4- and 3-isomers have different substitution positions on the benzene ring and are different chemicals. This product is the para isomer, CAS 14235-81-5. Confirm the required isomer and CAS number when ordering.
How is it used in polymer research?	Published studies use 4-Ethynylaniline to introduce ethynyl end groups into polyisoimide or polyimide systems. Suitability and resulting properties depend on the selected resin chemistry and processing conditions.
Which quality limits are listed?	The listed specification is purity ≥99%, water ≤2%, sodium ≤150 ppm and iron ≤100 ppm. Request the analytical methods and batch results, and state any additional impurity limits needed for your process.
What should I include in an enquiry?	Please state CAS 14235-81-5, the intended synthesis or resin application, required purity and impurity limits, quantity, packaging and destination. Request the current specification, batch COA and SDS for review.