Difluoroacetylene, C2F2, is a compound of carbon and fluorine. A linear molecule, its two carbons are joined by a triple bond and have terminal fluorines: F-C≡C-F. The molecule is the perfluorocarbon analog of acetylene, C2H2. Preparation of difluoracetylene is difficult, with danger of explosions and with low yields. Nevertheless, the compound has been made, isolated, and characterized by NMR and IR spectroscopy. The compound is of interest as a precursor to fluoropolymers containing double bonds, analogous to polyacetylene.

CAS：689-99-6
中文别名：
英文别名：Ethyne,difluoro;difluoroethyne;Difluoracethylen;difluoroacethylene;Acetylene,difluoro;Difluoroacetylene;
分子式：C2F2
分子量：62.0182
精确质量：61.9968
Psa：0.0
Logp：0.8438

密度：1.112g/cm3
折射率：1.275