Here are the key aspects:
Chemical Structure
- Molecular Formula:C₂HF₃Cl₂
- Molecular Weight: 152.93 g/mol
Physical Properties
- Appearance:Clear , Coloorless liquid
- Odor:Faint ,enther-like or sweetish odor
- Boiling Point:27.8°C (82°F) at 1 atm
- Melting Point:-107°C (-160.6°F)
- Density: 1.46g/cm³ (liquid phase at 25°C)
- Vapor Density: 5.5 (relative to air)
- Vapor Pressure :86.6kPa(650 mmHg)
Chemical Properties
- Reactivity:Stable under normal temperatures and pressures.
May decompose at high temperatures (e.g., in a fire) to form toxic gases such as hydrogen fluoride (HF), hydrochloric acid (HCl), and phosgene (COCl₂). Avoid contact with strong oxidizers and open flames. - Flammability:Non-flammable under ASHRAE Standard 34 (Class B1)
Not easily ignited in air under normal conditions. - Solubility:Slightly soluble in water (~0.35% by weight at 25°C)
Miscible with many refrigeration lubricants (especially mineral oils and synthetic oils).
Uses
- Centrifugal Chiller ,Industrial Process Cooling , Institutional Buildings and Retrofit System,
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):0.012
- Global Warming Potential (GWP):77
Summary
R-123 is a low-pressure HCFC (Hydrochlorofluorocarbon) refrigerant used primarily in large-scale centrifugal chillers for air conditioning in commercial and industrial buildings. It is known for its high efficiency, low flammability, and relatively low ozone depletion and global warming impacts compared to older refrigerants like R-11.
