R421A is a zeotropic HFC blend of R125 and R134a (58/42 by weight) with zero ODP and a GWP of 2,631. Its simple two-component formulation gives predictable performance in R22 retrofit applications for residential and commercial A/C, and medium-temperature refrigeration.
As a China-based refrigerant exporter with 37 years of experience, Dalian Tongtai (TCoolGas) supplies R421A to 50+ countries with full SDS / TDS / COA per batch. We support mixed-SKU container consolidation and provide third-party re-test reports within 24 hours on request.
Residential and light-commercial A/C.
Medium-temperature commercial ref.
Packaged rooftop A/C retrofits.
R22 heat-pump service.
| Parameter | Value |
|---|---|
| Chemical Name | Zeotropic blend R125/R134a (58/42) |
| CAS No. | — |
| Molecular Formula | C₂HF₅ / C₂H₂F₄ |
| Molecular Weight | 112.5 g/mol |
| Boiling Point (1 atm) | −41.8 °C |
| Critical Temperature | 82.6 °C |
| Critical Pressure | 3.90 MPa |
| Liquid Density (25 °C) | 1.180 g/cm³ |
| ODP | 0 |
| GWP (AR5, 100-yr) | 2,631 |
| ASHRAE Safety Classification | A1 (non-flammable, low toxicity) |
| Purity | ≥ 99.8% |
| Moisture | ≤ 10 ppm |
| Acidity (as HCl) | ≤ 1 ppm |
| Non-Condensable Gas | ≤ 1.5% |
| Appearance | Colorless, clear, no turbidity |
| Packaging | Net Weight | 20'FCL Load | Type |
|---|---|---|---|
| Disposable Cylinder | 11.3 kg | 960 pcs | One-time fill |
| Disposable Cylinder | 25 lb | 960 pcs | US market |
| Ton Cylinder | 800 kg | 14 units | Refillable |
| ISO Tank Container | ~18,000 kg | - | Sea freight bulk |
We'll reply within 24 hours with pricing and lead time.
