Difluoromethane

Difluoromethane is an organofluorine compound with the chemical formula CH2F2 and CAS number 75-10-5. It is a colorless gas at room temperature with a molecular weight of 52.023 g/mol. This compound belongs to the family of hydrofluorocarbons (HFCs) and is characterized by two fluorine atoms bonded to a central carbon atom along with two hydrogen atoms, making it a relatively simple fluorinated methane derivative.

Difluoromethane is a colorless, odorless gas under standard conditions with a boiling point of approximately -51.6°C and a melting point of -136°C. It has low solubility in water but is soluble in organic solvents. The compound exhibits low toxicity and is non-flammable under normal atmospheric conditions. Its vapor density is approximately 1.8 times that of air, and it has relatively low reactivity due to the strong carbon-fluorine bonds.

Difluoromethane is primarily used as a refrigerant, particularly in automotive air conditioning systems and commercial refrigeration applications. It serves as a replacement for ozone-depleting substances and is commonly used in blended refrigerant mixtures. Additionally, it finds applications as a propellant in aerosol products, as a blowing agent for foam production, and in specialized industrial processes requiring low-temperature applications or inert atmospheres.

Difluoromethane should be handled in well-ventilated areas or under exhaust ventilation to prevent accumulation of vapors. Personnel should wear appropriate personal protective equipment including safety glasses and protective clothing. Since it is supplied as a pressurized gas, proper handling of gas cylinders is essential, including securing cylinders upright and using appropriate pressure regulators. Avoid exposure to high temperatures and ensure proper grounding when transferring the material.

Difluoromethane should be stored in a cool, dry, well-ventilated area away from direct sunlight and heat sources. Gas cylinders must be stored upright, properly secured, and protected from physical damage. Storage areas should be equipped with appropriate ventilation systems and gas detection equipment. The compound should be kept away from incompatible materials and stored according to local regulations for pressurized gases. Regular inspection of storage containers is recommended.

Difluoromethane exposure typically occurs through inhalation since it is a gas at room temperature. In case of overexposure, immediately move the affected person to fresh air and ensure they remain calm and warm. If breathing difficulties occur, provide oxygen and seek immediate medical attention. For skin contact with liquid form, remove contaminated clothing and flush the affected area with water. Eye contact should be treated by flushing with water for at least 15 minutes.

Difluoromethane must be disposed of according to local, national, and international environmental regulations due to its classification as a greenhouse gas. Empty cylinders should be returned to the supplier for proper reconditioning or disposal. Any remaining product should be recovered using appropriate refrigerant recovery equipment rather than being vented to the atmosphere. Professional waste disposal companies specializing in fluorinated gases should handle the disposal process to ensure environmental compliance.

Difluoromethane is classified under ADR Class 2 (gases) for transportation purposes. It must be transported in appropriate pressure vessels that meet relevant standards and regulations. Vehicles transporting this material should be properly placarded and equipped with necessary safety equipment. Drivers must hold appropriate dangerous goods training certificates. The compound should be transported with proper documentation including safety data sheets and transport emergency cards following applicable dangerous goods regulations.

Difluoromethane is subject to various regulatory frameworks including REACH registration in Europe and classification under the CLP regulation. It is regulated under the Montreal Protocol and EU F-Gas Regulation due to its global warming potential. The compound is not classified as a SVHC (Substance of Very High Concern) under REACH. Users must comply with reporting requirements for fluorinated greenhouse gases and ensure proper handling, recovery, and disposal according to environmental regulations.

Difluoromethane is available through OYSI, a leading European distributor of technical chemicals and specialty gases. OYSI provides reliable supply chains across Europe with proper documentation, quality assurance, and regulatory compliance support. As a specialized chemical distributor, OYSI ensures that difluoromethane is supplied in appropriate packaging with complete safety data sheets and technical support. Contact OYSI directly for pricing, availability, and delivery options specific to your location and requirements.