As a widely used medium and low temperature refrigerant today, R404A is often used in cold storage, food freezing equipment, marine refrigeration equipment, industrial cryogenic refrigeration, commercial cryogenic refrigeration, transportation refrigeration equipment (refrigerated trucks, etc.), freezing condensation units, supermarket display cabinets and other refrigeration equipment. R404A is a replacement for Freon in newly installed refrigeration equipmentR22andR502The most common industry standard refrigerant (usually cryogenic refrigeration systems).
R404A is closest to the operation of R502 and is suitable for all environments where R502 can operate normally. It is recognized and used by most refrigeration equipment manufacturers around the world. Due to the physical and chemical properties, theoretical cycle performance and compressor of R404A, R502 and R22refrigerant oilFor after-sales maintenance of refrigeration equipment initially installed with R502 and R22 refrigerants, if additional refrigerants need to be added or replaced, R502 and R22 can still only be added. Usually, R404A cannot be directly used to replace R502 and R22. R404A is suitable for new commercial refrigeration equipment, transportation refrigeration equipment or newer equipment at medium to low temperatures, which can reach 15 ° F (-9.4 ° C) or colder. This refrigerant is suitable for all environments where R502 can operate normally.
R404A continues to serve as the leading product in global industry standards for HFC refrigerants for new commercial refrigeration applications. As a replacement for R502 and R22 in refrigeration applications, R404A provides excellent capabilities and energy efficiency in refrigeration applications and is recognized by the world's leading compressor manufacturers and equipment manufacturers.
UN NO:3337
CAS NO:420-46-2,354-33-6,811-97-2
Composition of R404a:R125,R134A,R143A
Mole percentage: R125 accounts for 35.7817%, R134A accounts for 3.8264%, R143A accounts for 60.3919%
Mass percentage:R125accounting for 44%,R134Aaccounting for 4%,R143A52%
R404a Refrigerant Parameters
| Name: R404A, HFC-404A | Classification: Mixture, Mixed Refrigerants |
| Molecular weight: 97.6 | Molar mass: 97.6g/mol |
| Critical temperature: 72℃ | Critical pressure: 3.7MPa |
| Critical density: 0.4842g/cm3 | Boiling point (101.3KPa): -46.1℃ |
| CAS Number: 354-33-6/811-97-2/420-46-2 | Liquid density (25℃):1.045g/cm3 |
| Evaporation potential at boiling point KJ/Kg: 200.1 | Specific heat (25℃) Kj/(kg.k): 1.54 |
| Ozone Destruction Potential (ODP): 0 | Global Warming Coefficient (GWP): 3922 |
| Isobaric steam specific heat (30℃, 101.3kPa):0.21 |
Product identity
- Safety class
- A1
- Type
- HFC blend
- GWP
- 3922 (IPCC AR4)
- ODP
- 0 (not an ozone-depleting substance)
Application areas
Grouped by equipment type, for selection reference only; the equipment manufacturer's requirements and local regulations prevail.
Thermophysical properties
- Normal boiling point (1 atm)
- -46.5 °C
| Saturation temp. (°C) | -40 | -30 | -20 | -10 | 0 | 20 | 30 | 40 | 45 |
|---|---|---|---|---|---|---|---|---|---|
| Saturation pressure (bar abs) | 2.4 | 3.52 | 4.94 | 6.74 | 8.92 | 14.5 | 18.5 | 23.4 | 26.2 |
Data taken from published pressure–temperature tables and interpolated; for selection reference only — do not use for safety-critical design, commissioning or charging calculations. The equipment manufacturer's requirements and primary references prevail. Refrigerant pressure–temperature tool
Alternatives & Matched Lubricant
Under the Kigali Amendment HFC phase-down, the following alternatives can be evaluated (R404A itself remains legal to use); the final selection must match the application, system pressure and lubricant compatibility.
- Alternative refrigerants
- R448A, R449A, R452A or R290/R744 low-temp solutions
Alternatives are a selection reference only; the equipment manufacturer's requirements and local regulations prevail.
GWP comparison: R404A vs. alternatives
Side-by-side comparison of R404A and its alternative refrigerants on the IPCC AR4 (GWP100) basis.
| Refrigerant | GWP100 | ODP | Safety class | Chemical family | GWP change |
|---|---|---|---|---|---|
| R404A | 3922 | 0 | A1 | HFC blend | Baseline |
| R448A | 1387 | 0 | A1 | HFO/HFC blend | ≈ -65% |
| R449A | 1282 | 0 | A1 | HFO/HFC blend | ≈ -67% |
| R452A | 2140 | 0 | A1 | HFO/HFC blend | ≈ -45% |
| R290 | 3 | 0 | A3 | HC | ≈ -100% |
| R744 | 1 | 0 | A1 | Natural refrigerant | ≈ -100% |
GWP values are taken from this site's regulatory database (IPCC AR4 / GWP100); "GWP change" is an approximate figure calculated from the values above. Alternatives are a selection reference only; the equipment manufacturer's requirements and local regulations prevail.
Regulatory and compliance status (R404A / R404A (R125/R143a/R134a blend))
R404A (R404A (R125/R143a/R134a blend)) has an ODP of 0 and is not an ozone-depleting substance, and therefore is not bound by the Montreal Protocol phase-out schedule; but as a fluorinated greenhouse gas (F-gas, GWP 3922), it is controlled under the Kigali Amendment and the HFC reduction policies of major economies. The following are the regional status as of 2026, for reference in procurement and compliance decisions.
EU
- RegulationF-gas Regulation (EU) 2024/573, in force since 2024-03-11
- HFC quota60% in 2025–28, 30% in 2029–33, 20% in 2034–35, 15% from 2036; HFC fully phased out by 2050
- New equipment restrictionsNew refrigeration/air-conditioning equipment with GWP>150 has been banned for sale in phases since 2022 (commercial refrigeration 2022, standalone equipment 2025, fully by 2030)
- For R404AGWP 3922 > 150 — not permitted for new equipment of this type in the EU; servicing or top-up of existing equipment is unaffected
US
- RegulationAmerican Innovation and Manufacturing (AIM) Act (in force since 2020-12-27)
- TargetHFC production and consumption reduced by 85% by 2036
- Quota cap60% in 2024–28, 30% in 2029–33, 20% in 2034–35, 15% from 2036
- For R404ARegulated HFC, exchange value accounted by GWP 3922
China
- RegulationKigali Amendment (entered into force for China on 2021-09-15)
- Baseline2024 production/consumption freeze (production 18.53 billion tCO₂e, consumption 9.05 billion tCO₂e)
- Reduction10% reduction by 2029, 30% by 2035, 50% by 2040, 80% by 2045
- For R404AProduction and use are subject to quota management
- Domestic procurement qualificationHFC-class refrigerants require environmental filing; see the Q&A below (system: new-ods.ozone.org.cn)
Japan
- RegulationAct on Rational Use and Proper Management of Fluorocarbons
- MechanismSets caps based on “weighted-average GWP” for designated products + compliance deadlines (not an all-sector ban)
- Typical capsDomestic air conditioning ≤750 (2018), commercial air conditioning ≤750 (2020), automotive air conditioning ≤150 (2023), condensing/freezing units ≤1500 (2025), cold storage ≤100 (2019)
- For R404AGWP 3922 exceeds condensing/refrigeration units (≤1500), residential air conditioners (≤750), commercial air conditioners (≤750), vehicle air conditioners (≤150), cold stores (≤100) — such new equipment must switch to a lower-GWP refrigerant
Other countries and regions (grouped by the Kigali Amendment)
Apart from the four columns of EU / US / China / Japan, the global 170+ Kigali parties all comply under the A5 (developing countries) / non-A5 (developed countries) groupings of the Montreal Protocol, and none impose equipment-level bans. The grouping determines the HFC reduction pace and is unrelated to geography — for example, the Middle East Gulf and India belong to A5 Group 2, while Brazil, Mexico and Chile belong to A5 Group 1 (same group as China). The table below is a quick reference for the groupings of major markets:
| Grouping | HFC reduction pace | Major countries / regions (representative) |
|---|---|---|
| A5 Group 1 (developing countries, including China) | 2024 freeze → 10% reduction by 2029 → 30% by 2035 → 50% by 2040 → 80% by 2045 | Brazil, Argentina, Chile, Colombia, Peru, Mexico, South Africa, South Korea, Thailand, Indonesia, Malaysia, Vietnam, Egypt, Nigeria, etc. (about 140 countries in total) |
| A5 Group 2 (high-ambient-temperature group, HAT) | 2028 freeze → 10% reduction by 2032 → 20% by 2037 → 30% by 2042 → 85% by 2047 | India, Bahrain, Iran, Iraq, Kuwait, Oman, Pakistan, Qatar, Saudi Arabia, United Arab Emirates |
| Other non-A5 (developed countries, except EU/US/Japan) | 85% reduction by 2036 / reduced to 15% by 2050 | Canada, Australia, New Zealand, Switzerland, Norway, United Kingdom, Russia* (first two steps delayed: 5% by 2020, 35% by 2025), etc. |
For R404A: subject to quota constraints, long-term supply restricted and prices trending upward. For the complete list of Parties and groupings, refer to the UNEP Ozone Secretariat (data version 2026.09).
Supply & Ordering
- Packaging
- cylinders / ton drums / ISO tanks / tankers (by grade and order size)
- Minimum order
- confirmed on enquiry; negotiable for bulk purchases
- Terms & lead time
- FOB / CIF / EXW and others confirmed on request
Please confirm the exact packaging, minimum order and lead time via the enquiry form below.
About WULA
WULA was founded in 2013. We are a refrigerant supply organizer, focused on moving goods from the production line to the customer's own line and site.
- Compliance paperwork
- We help customers meet compliance requirements: sales filing, per-transaction verification, quarterly reporting and three-year retention of documents.
- Order handling
- Scattered orders are managed through consolidated, data-driven administration to keep procurement efficient.
- Supply allocation
- Forecasting and coordinated allocation across multiple warehouses, to keep supply stable.
Need a quote or technical documents for R404A?
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Bulk orders, custom packaging and other technical questions are all welcome.
Regulatory data updated: 2026-09-18 · v2026.09.12
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