R-453A (RS-44B) Refrigerant Gas | Alper Refrigerant Gas — Wholesale HFC Refrigerant

HFO/HFC blend for R-404A replacement with 55% lower GWP. Optimized for medium temperature commercial refrigeration.

🔄 R‑453A (RS‑44B / RS‑70) Refrigerant – Low-GWP HFC Drop-In for R‑22 Systems

Category: Hydrofluorocarbon (HFC) – zeotropic blend, formulated as a direct replacement for R‑22 in residential and light commercial systems.

🧪 Composition & CAS Numbers

Component CAS Number % by Weight

R‑134a (1,1,1,2‑Tetrafluoroethane) 811‑97‑2 ~53.8 %

R‑125 (Pentafluoroethane) 354‑33‑6 ~20 %

R‑32 (Difluoromethane) 75‑10‑5 ~20 %

R‑227ea (1,1,1,2,3,3,3‑Heptafluoropropane) 431‑89‑0 ~5 %

Isopentane (R‑601a) 78‑78‑4 ~0.6 %

n‑Butane (R‑600) 106‑97‑8 ~0.6 %

Blended to ≥99.5% purity; moisture ≤10 ppm; acidity ≤1 ppm

⚙️ Technical Specifications

Boiling Point: –42.2 °C (–44.0 °F)

Temperature Glide: ~4–4.2 K

Critical Temperature: 87.5 °C (189.6 °F)

Critical Pressure: ~45.7 bar (663 psia)

Liquid Density @25 °C: ~1,136 kg/m³

Vapor Pressure @25 °C: ~11.2 bar

Molecular Weight: ~105.3 g/mol

🌱 Safety & Environmental Profile

Safety Class: ASHRAE A1 – non-toxic, non-flammable

Ozone Depletion Potential (ODP): 0 (chlorine-free)

Global Warming Potential (GWP AR4): ~1,664–1,765 – significantly lower than R‑22 (~1,810)

UN Number: UN 1078 – non-flammable liquefied gas

🚀 Features & Benefits

True Drop-In Replacement for R‑22: Offers matching mass flow, pressure, and cooling capacity

Energy Efficient: Delivers similar or improved COP with lower discharge temperatures

Wide Oil Compatibility: Compatible with mineral oil, alkylbenzene, and POE—no oil change required

Operational Simplicity: Liquid-phase charging advised; vapor-phase charging avoided to maintain blend integrity

Field Proven Since 2013: Used successfully in HVAC and refrigeration systems down to –20 °F

🛠️ Applications

Ideal for retrofitting and servicing:

Residential and commercial air conditioning systems

Heat pumps, rooftop units

Light commercial refrigeration – walk-ins, transport units, chillers

Designed as a seamless drop-in for R‑22 systems, including capillary and TXV matching applications

⚠️ Handling & Storage

Charge via liquid phase only—prevent fractionation

Safety Gear Required: Thermal gloves and eye protection; avoid skin contact due to frostbite risk

Storage Conditions: Store upright in cool, ventilated spaces away from ignition sources

Do Not Vent: F-Gas regulations prohibit release into atmosphere

📞 Why AlperRefrigas Recommends R‑453A

Effortless Retrofit – No oil changes or major modifications

Performance Consistency – Meets original R‑22 performance criteria

Regulatory Compliance – Zero ODP, reduced GWP, supports F‑Gas regulations

Global Support & Availability – Produced by ComStar/RS brands, widely stocked