34125

Dibromodifluoromethane

≥95.0% (GC)

• Synonym(s): Carbon dibromide difluoride, Difluorodibromomethane
• Empirical Formula (Hill Notation): CBr₂F₂
• CAS Number: 75-61-6
• Molecular Weight: 209.82
• Beilstein: 1732515
• EC Number: 200-885-5
• MDL number: MFCD00000367
• UNSPSC Code: 12352100
• PubChem Substance ID: 57649084
• NACRES: NA.22

Properties

• vapor density: 7.24 (vs air)
• vapor pressure: 12.79 psi ( 20 °C)
• Assay: ≥95.0% (GC)
• form: liquid
• refractive index: n20/D 1.398 (lit.); n20/D 1.398
• bp: 22-23 °C (lit.)
• mp: −142-−141 °C (lit.)
• density: 2.297 g/mL at 25 °C (lit.)
• storage temp.: 2-8°C
• SMILES string: FC(F)(Br)Br
• InChI: 1S/CBr2F2/c2-1(3,4)5
• InChI key: AZSZCFSOHXEJQE-UHFFFAOYSA-N

Description

General description

The photolysis products of dibromodifluoromethane were characterized by matrix isolation infrared and UV/Visible spectroscopy. Free radical addition of dibromodifluoromethane with fluoroolefins has been reported. Dibromodifluoromethane reacts with hydrocarbon olefins to yield 1,3-dibromo-1,1-difluoroalkene. Sulfinatodehalogenation reagent promoted addition reaction of difluorodibromomethane with alkenes, alkynes and cyclic enol ethers has been described.

Application

• Synthesis of 3‑Fluoropyrazoles via Radical-Polar Crossover Photoinduced Cyclization: This study highlights the use of dibromodifluoromethane (CF2Br2) for the synthesis of valuable difluorinated and monofluorinated compounds through a novel photoinduced cyclization process (MA Reed, ND Patil, Synfacts, 2023).

Other Notes

Reagent for the Wittig olefination of carbonyl compounds to difluoromethylene and fluoromethylene derivatives; Precursor of difluorocarbene

Safety Information

• Pictograms: GHS07
• Signal Word: Warning
• Hazard Statements: H315,H319,H335,H420
• Precautionary Statements: P261 - P264 - P271 - P302 + P352 - P305 + P351 + P338 - P502
• Hazard Classifications: Eye Irrit. 2 - Ozone 1 - Skin Irrit. 2 - STOT SE 3
• Target Organs: Respiratory system
• Storage Class Code: 10 - Combustible liquids
• WGK: WGK 3
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves