Product Overview
R1234ze(trans-1,3,3,3-Tetrafluoroprop-1-ene) is a fourth-generation hydrofluoroolefin (HFO) refrigerant developed as a sustainable, low-GWP alternative to R134a in medium-temperature air conditioning and refrigeration applications . It is a colorless, mildly flammable gas with a faint ethereal odor, offering excellent thermodynamic properties and an ultra-low global warming potential .
R1234ze is characterized by very low GWP of less than 1 to 6 (depending on reference), zero ODP, and an atmospheric lifetime of only 18 days—dramatically shorter than R134a’s 13 years . It is increasingly adopted in new equipment designs for chillers, heat pumps, and commercial refrigeration systems, particularly in regions with active F-gas phasedown regulations.
⚠️ Important Safety Note: R1234ze is classified as A2L (mildly flammable) under ASHRAE Standard 34 . However, it is non-flammable at temperatures below 30°C and does not form flammable mixtures with air under normal handling and storage conditions . The refrigerant has a very low heat of combustion (approximately 5 times less than propane) and a low burning velocity, meaning any flame that could occur would be extremely mild and unlikely to propagate . R1234ze is NOT a drop-in replacement for R134a—direct replacement typically reduces cooling capacity by approximately 20-30% . Systems should be specifically designed or retrofitted for this refrigerant, and the compressor manufacturer should be consulted for compatible lubricant recommendations (POE or PAG oils are recommended) .
📋 Physical Properties
· Chemical Name: trans-1,3,3,3-Tetrafluoroprop-1-ene
· Chemical Formula: CF₃CH=CHF / C₃H₂F₄
· CAS Number: 29118-24-9
· UN Number: 3163
· Molecular Weight: 114.0 g/mol
· Boiling Point (101.3kPa): approx. -19.0°C
· Critical Temperature: approx. 109.4°C
· Critical Pressure: approx. 3.64 MPa (36.4 bar)
· Liquid Density (25°C): approx. 1.14 g/cm³
· Latent Heat of Vaporization (30°C): 162.9 kJ/kg
· Vapor Pressure (25°C): approx. 0.75 MPa
· ODP: 0 (Zero Ozone Depletion Potential)
· GWP: < 1 to 6 (IPCC AR4)
· Atmospheric Lifetime: approx. 18 days
· Appearance: Colorless, non-turbid liquid/gas
· Odor: Faint ethereal odor
· Safety Class: A2L (Low toxicity, mildly flammable)
📋 Quality Standards
· Purity: ≥99.5% (refrigeration grade)
· Safety Class: A2L (Low toxicity, mildly flammable)
· ODP: 0
· GWP: < 1 to 6
· Standard: AHRI-700 compliant
· Packaging: 13kg returnable cylinder (typical)
Applications
R1234ze is widely used in:
· Commercial chillers – air-cooled and water-cooled chillers for supermarkets and commercial buildings
· Heat pumps – medium-temperature heat pump applications
· Commercial refrigeration – refrigerated cabinets, cold rooms, vending machines, beverage dispensers
· Refrigerant blends – as a component in low-GWP blends (e.g., R448A, blends with R134a or R32)
· Foam blowing agents – in polyurethane foam production
· Aerosol propellants – in personal care, pharmaceutical, and industrial cleaning products
ℹ️ Note: R1234ze offers comparable COP (coefficient of performance) to R134a, but has approximately 20-30% lower cooling capacity . Direct replacement in existing R134a systems will result in reduced capacity and slightly lower efficiency . The refrigerant is best suited for new equipment design where system components can be optimized for its properties . For retrofitting existing R134a systems, it is recommended to consult the manufacturer’s guidelines to identify the most suitable low-GWP replacement, as system modifications may be required .
Documentation & Compliance
· COA (Certificate of Analysis) available with every shipment
· MSDS (Material Safety Data Sheet) provided upon request
· AHRI-700 purity standard certified
· Full shipping documents for smooth customs clearance
Storage & Handling
· Store in a cool, dry, ventilated area, away from fire and direct sunlight
· Keep cylinders upright and secured during storage and transport
· Do not refill or reuse disposable cylinders (use returnable cylinders where available)
· Dispose of empty cylinders in accordance with local environmental regulations
· Use appropriate personal protective equipment (PPE) when handling, and ensure the work area is well-ventilated
· Consult the compressor manufacturer for compatible lubricant recommendations – polyol ester (POE) oils are commonly recommended for R1234ze systems
Ordering Information
Item Detail
Packaging 13kg returnable cylinder (typical)
MOQ Inquire for details
Lead Time Inquire for details