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Diphenylacetylene, 99%

Product Code. 11441738
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Product Code. 11441738 Supplier Thermo Scientific Alfa Aesar Supplier No. A13979.22
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Estimated Shipment: 30-09-2026
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Description

CAS: 501-65-5 | C14H10 | 178.234 g/mol

Diphenylacetylene is often used as a building block in organic and organometallic chemistry. It acts as dienophile and under goes Diels-Alder reaction with tetraphenylcyclopentadienone to prepare hexaphenylbenzene. It acts as a precursor in the preparation of 3-alkoxycyclopropene by reacting with benzal chloride in the presence of potassium t-butoxide.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Applications
Diphenylacetylene is often used as a building block in organic and organometallic chemistry. It acts as dienophile and under goes Diels-Alder reaction with tetraphenylcyclopentadienone to prepare hexaphenylbenzene. It acts as a precursor in the preparation of 3-alkoxycyclopropene by reacting with benzal chloride in the presence of potassium t-butoxide.

Solubility
Miscible with ether and hot alcohol. Immiscible with water.

Notes
Incompatible with strong oxidizing agents.
TRUSTED_SUSTAINABILITY

Chemical Identifiers

CAS 501-65-5
Molecular Formula C14H10
Molecular Weight (g/mol) 178.234
MDL Number MFCD00004786
InChI Key JRXXLCKWQFKACW-UHFFFAOYSA-N
Synonym diphenylacetylene, tolan, diphenylethyne, 1,2-diphenylethyne, tolane, 1,2-diphenylacetylene, benzene, 1,1'-1,2-ethynediyl bis, biphenylacetylene, diphenyl acetylene, ethyne, diphenyl
PubChem CID 10390
ChEBI CHEBI:51579
IUPAC Name 2-phenylethynylbenzene
SMILES C1=CC=C(C=C1)C#CC2=CC=CC=C2

Specifica

Melting Point 58°C to 62°C
Density 0.99
Boiling Point 170°C (19 mmHg)
Odor Odorless
Quantity 100 g
Beilstein 606478
Merck Index 14,9504
Solubility Information Miscible with ether and hot alcohol. Immiscible with water.
Formula Weight 178.23
Percent Purity 99%
Chemical Name or Material Diphenylacetylene
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