Refrigerant gas r404a

R404a is a non-ozone depleting HFC blend (R125/R143a/R134a) primarily used in low and medium-temperature commercial refrigeration. Key specifications include a boiling point of -46.5°C and a critical pressure of 37.32 bar. It is the industry standard for cold storage, supermarket display cases, refrigerated transport, and ice machines. When sourcing, ensure the purity level is ≥99.9% and moisture content is ≤10ppm to prevent compressor damage and acid formation.

Buyers must verify that the product meets AHRI 700 standards for purity and composition. Cylinders must comply with international pressure vessel regulations such as DOT-39 (for non-refillable) or EN 13322 (for refillable). Additionally, ensure the supplier provides a Material Safety Data Sheet (MSDS) and a Certificate of Analysis (COA) for every batch. For EU markets, compliance with F-Gas regulations is mandatory, while US buyers must ensure the supplier is registered with the EPA.

To avoid counterfeit or contaminated gas, perform a pressure-temperature (P-T) check upon receipt; the pressure should match the P-T chart for the ambient temperature. Request third-party lab testing (e.g., SGS or Intertek) to check for the presence of R40 or other prohibited hydrocarbons. High-quality R404a should be colorless and odorless; any pungent smell indicates impurities that could lead to system corrosion or explosions.

R404a is classified as Class 2.2 Non-Flammable Gas (UN3337). It must be shipped in specialized dangerous goods (DG) containers. Ensure your freight forwarder is experienced in handling IMO Class 2.2 cargo. You must provide a Dangerous Goods Declaration and ensure the packaging (cylinders or ISO tanks) features clear hazard labels. For shipping to countries with strict environmental quotas, ensure you have the necessary import licenses or quotas before the vessel departs.

Use Made-in-China.com's secured payment services to protect your funds until delivery is confirmed. Prioritize Audited Suppliers who have undergone on-site inspections. When negotiating, specify that payment is contingent upon a successful pre-shipment inspection by a third party. Avoid suppliers offering prices significantly below the global market index for HFCs, as this often indicates recycled or sub-standard gas.

Be aware of the Kigali Amendment to the Montreal Protocol, which is phasing down HFCs like R404a due to their high Global Warming Potential (GWP of 3922). This may result in higher import duties, anti-dumping duties (especially in the US/EU), or strict volume quotas. Always check the Harmonized System (HS) Code 3824.78 against your local customs tariff schedule to calculate the Total Cost of Ownership (TCO) accurately.