R-438A (MO99) Refrigerant Gas | Alper Refrigerant Gas — Wholesale HFC Refrigerant

HFC/HCFC blend for R-22 replacement in existing systems. Improved capacity and efficiency over R-407C.

🔄 R‑438A (Freon™ MO99) – Zeotropic HFC Replacement for R‑22 Systems

Category: Hydrofluorocarbon (HFC) – non-azeotropic blend

CAS Numbers (by component):

R‑125 (Pentafluoroethane): 354‑33‑6

R‑134a (1,1,1,2‑Tetrafluoroethane): 811‑97‑2

R‑32 (Difluoromethane): 75‑10‑5

R‑600 (Butane): 106‑97‑8

R‑601a (Isopentane): 78‑78‑4

Blend Composition (by weight):

R‑125: 45%

R‑134a: 44.2%

R‑32: 8.5%

R‑600: 1.7%

R‑601a: 0.6%

✅ Safety, Regulation & Environmental Profile

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

Ozone Depletion: ODP = 0 (chlorine-free)

Global Warming Potential: ~2,265 (AR4)

UN Number: UN 1078 – non-flammable liquefied gas

EU Regulation: Governed under F-gas Regulation 2024/573

🧪 Physical & Performance Specifications

Property Value

Boiling Point (@1.013 bar) –42.3 °C

Temperature Glide ~6.25 K

Critical Temperature ~83.7 °C

Critical Pressure ~42.16 bar

Liquid Density @25 °C ~1,180 kg/m³

Vapor Pressure @25 °C ~11.24 bar

🌟 Core Benefits & Features

True Drop-In Alternative to R‑22: Demonstrates similar cooling performance and capacity with no significant efficiency loss

Oil Compatibility: Works with mineral oil (MO), alkylbenzene (AB), and POE; MO-friendly without oil change, POE recommended for optimal miscibility

Easy Retrofit & Servicing: Systems can be liquid-charged and topped off post-retrofit without oil/o-ring changes; filter drier and leak seals recommended

Lower Compressor Discharge Temperatures: Improves compressor lifetime and system reliability

Certified Field Performance: Proven over 10+ years with widespread use in residential, commercial, and industrial systems

🛠️ Ideal Applications

Residential and commercial air conditioning: rooftops, split systems, direct expansion chillers

Low- to medium-temperature refrigeration: walk-ins, supermarket cases, transport units

Suitable for industrial & packaged HVAC setups originally designed for R‑22

Not recommended for flooded centrifugal chillers or high-load LPR systems without OEM guidance

📦 Packaging & Handling

Cylinder Sizes: Available in 12 kg, 20 kg, and 46 kg cylinders, supporting liquid-phase charging

Storage: Upright, cool, ventilated area away from direct sunlight or heat

National Refrigerants Ltd

Safety Precautions: Avoid frostbite; use PPE; prevent oxygen displacement; follow SDS guidelines

📞 Why AlperRefrigas Recommends R‑438A

Efficient & Low-Hassle Retrofits: No oil conversion required, compatible with existing system components

Performance Integrity: Maintains capacity similar to R‑22, with extended compressor life

Regulation-Compliant: Zero ozone depletion, F-gas registered, GWP documented

Global Support: Backed by Chemours, National Refrigerants, Climalife, Hudson, and more