Difluoroacetylene

Base Information

• Chemical Name: Difluoroacetylene
• CAS No.: 689-99-6
• Molecular Formula: C2F2
• Molecular Weight: 62.0188
• DSSTox Substance ID: DTXSID70218978
• Nikkaji Number: J127.476G
• Wikipedia: Difluoroacetylene
• Wikidata: Q3027716
• Mol file: 689-99-6.mol

Synonyms:difluoroethyne;FCCF cpd

Chemical Property of Difluoroacetylene

Chemical Property:

• Vapor Pressure: 4240mmHg at 25°C
• PSA: 0.00000
• Density: 1.112g/cm³
• LogP: 0.84380
• XLogP3: 1.3
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 2
• Rotatable Bond Count: 0
• Exact Mass: 61.99680632
• Heavy Atom Count: 4
• Complexity: 46.9

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

• Canonical SMILES: C(#CF)F

Technology Process of Difluoroacetylene

There total 5 articles about Difluoroacetylene which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield:

fluoroethyne (2713-09-9) → difluoroacetylene (689-99-6) + acetylene (74-86-2,25067-58-7)

Guidance literature:

Thermodynamic data; ΔE(excit.), ΔH(excit.);

DOI:10.1021/j100360a010

Reference yield:

carbon tetrafluoride (75-73-0) → freon-218 (76-19-7) + Hexafluoroethane (76-16-4) + difluoroacetylene (689-99-6) + 1,1,2,2,3,3-Hexafluoro-cyclopropane (931-91-9)

Guidance literature:

In neat (no solvent); other Radiation; radiation with neutrons, decomposition of 0.95 mol-% CF4, formation of C2F6 (0.35 mol-%), C2F2 (0.54 mol-%), C3F8 (0.04 mol-%) and cyclo-C3F6 (0.01 mol-%);; product mixture obtained;;

Reference yield:

carbon tetrafluoride (75-73-0) + carbon-11 (14333-33-6) → polytetrafluoroethylene (116-14-3,82785-14-6) + difluoroacetylene (689-99-6) + [11C]carbon dioxide (10375-59-4) + 11C-carbon monooxide (10456-04-9)

Guidance literature:

With air; In neat (no solvent); reaction of CF4 with (11)C atoms;;

DOI:10.1021/ja00704a008

upstream raw materials:

1-fluoroethylene

fluoroethyne

1,1,2-trifluoroethylene

carbon tetrafluoride

Downstream raw materials:

polytetrafluoroethylene

1,2,3,3-tetrafluorocyclopropene

1,1,3,3-tetrafluoro-1,2-propadiene

1,3,3,3-tetrafluoropropyne

Refernces

• 1、 Lin,Hsu,Hwang,Lee,Yang. "Photodissociation dynamics of trifluoroethylene at 157 nm excitation". . p. 10719 - 10726. Retrieved 2007/10/03.