Bismuth(V) fluoride is a white crystalline solid. It is an extremely strong oxidizing agent and fluorinating agent, something that adds fluoride ions to other chemicals. It reacts with water to make ozone and oxygen difluoride. It also reacts with iodine and sulfur at room temperature. Above 50°C, it reacts with hydrocarbons like paraffin to make fluorocarbons. At 180°C, it reacts with chlorine to make chlorine monofluoride and with bromine to make bromine trifluoride.
It is used as a fluorinating agent.