Difluoromethane (CH2F2). Here are the key aspects:
Chemical Structure
- INGREDIENT NAME : Difluoromethane
- Molecular Formula: CH2F2
- Molecular Weight: 52.02g/mol
Physical Properties
- Appearance: Colorless liquefied gas
- Odor: Faint ethereal odor
- Boiling Point: -51.7°C
- Melting Point: -136°C (-212.8°F)
- Density: 0.96 g/cm³ (liquid phase at 20°C)
- Vapor Density: 1.86 (relative to air)
- Critical Temperature:78.1°C
- Critical Pressure:5.78 MPa (57.8 bar)
Chemical Properties
- Reactivity:R32 is stable under normal use but can react with strong oxidizers or open flames. Decomposes at high temperatures to form toxic gases such as hydrogen fluoride (HF) and carbon oxides.
- Flammability:R32 is classified as mildly flammable (ASHRAE A2L). It has a narrow flammability range and requires appropriate safety precautions during handling and installation.
- Solubility:Slightly soluble in water. Highly soluble in organic solvents like alcohol and ether.
Uses
- Residential and commercial air conditioning systems
- Heat pumps
- Component in HFC blends (e.g., R410A, R454B)
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Increasingly used as a replacement for R410A in new-generation systems due to its higher efficiency and lower environmental impact
Safety and Handling
- Health Effects: Inhalation of high concentrations can cause respiratory irritation, dizziness, and headaches. Long-term exposure may have more severe effects on the liver and kidneys
- Handling Precautions: Use in well-ventilated areas. Avoid direct contact with skin and eyes. Use personal protective equipment (PPE) as necessary.
- Storage: Store in a cool, dry place away from heat sources and incompatible substances.
Environmental Impact
- Ozone Depletion Potential(ODP) :0.0
- Global Warming Potential( GWP ,100yr):675
Summary
R32 is a next-generation HFC refrigerant offering high energy efficiency, low GWP, and zero ozone depletion. It is ideal for modern AC and heat pump systems designed for A2L-class refrigerants. R32 supports the transition to environmentally sustainable HVAC solutions under global climate regulations.
