RS-24 is an easy-to-use Drop-in replacement for R12, There is no need to change the existing lubricant in the system, thereby avoiding a costly retrofit. RS-24 also provides a long term solution to replacing R12 in most applications such as hermetic and semi-hermetic systems, domestic refrigerators, refrigerated transport, cold stores, cellar cooling, dairy chillers, vending machines and including mobile air conditioning.
The properties of RS-24 make it an almost perfect match for R12 with its compatibility for traditional and synthetic lubricants, similar performance, lower discharge temperature, non-flammability and relatively short atmospheric lifetime. Performance relative to R12 is illustrated in Charts 1, 2 and 3 (on subsquent pages - please follow the link at the bottom of this page). It is this combination of properties which makes RS-24 unique as a replacement for R12 on the market today.
RS-24 is also suitable as a replacement for R134a due to its higher capacity which can be particularly beneficial at high ambient temperatures. RS-24 is an excellent replacement for R12 and compatible with R134a automotive air conditioning systems.
RS-24 has been designated an Ashrae number of R426A with a classification of A1, which is low toxicity and nonflammable.
RS-24 | R12 | ||
---|---|---|---|
Molecular weight | 102.6 | 120.9 | |
Boiling point (1 atm) | °C | - 28.6(1) | -29.8 |
°F | -19.5(1) | -21.6 | |
Temperature glide | °C | 0.5 | 0 |
Critical temperature | °C | 101.0 | 112.0 |
°F | 213.8 | 233.6 | |
Critical pressure | kPa | 4097 | 4116 |
psia | 594 | 597 | |
Liquid density at 25°C | kg/m³ | 1184 | 1311 |
Density of saturated vapour at 25°C | kg/m³ | 30.9 | 37.3 |
Specific heat of liquid at 25°C | kJ/kg°C | 1.45 | 1.00 |
Specific heat of vapour at 1 atm and 25°C | kJ/kg°C | 0.863 | 0.606 |
Vapour pressure at 25°C | kPa | 707(1) | 643 |
psia | 102.6(1) | 93.3 | |
Latent heat of vaporisation at boiling point | kJ/kg | 218 | 165 |
Ozone Depletion Potential | ODP | 0 | 1 |
Flammability limit in air (1 atm) | vol% | None | None |
Inhalation exposure (8 hr day and 40 hr week) | ppm | 1000 | 1000 |
(1) Bubble point