1-Difluoroethane is a gas at normal temperature, and a colorless transparent liquid under its own pressure. It is easily soluble in oil but hardly soluble in water. High-purity grade HFC-152a is used as a temperature-sensitive working medium, high-grade HFC-152a can be used as a refrigerant and aerosol, and is also an important raw material for the synthesis of HCFC-142b.