Klea® 404A

Klea® 404A (R-404A) low and medium-temperature refrigerant

Overview

Klea® 404A is a widely used HFC refrigerant blend and a long-standing replacement for legacy refrigerants such as R-22 and R-502. Designed for low and medium-temperature commercial refrigeration systems, Klea® 404A offers dependable performance in a variety of applications—from supermarket refrigeration to vending machines and food service equipment.

While still in broad use across the U.S. and globally, lower-GWP alternatives such as Klea® 407A is recommended for future-focused applications seeking reduced environmental impact.

Applications

Commercial refrigeration systems
Food storage and processing
Transport refrigeration
Supermarkets and convenience stores

Composition

R-143a: 52%
R-125: 44%
R-134a: 4%

Key benefits

ASHRAE A1 classification – non-toxic and non-flammable
Reliable and consistent for both low and medium-temperature systems
Widely available and supported across global markets
Proven performance in commercial refrigeration systems including:
- Reach-in and walk-in freezers
- Display cases
- Ice machines
- Vending units

Physical properties

Property	S.I. Units	Value	British Units	Value
Molecular weight	Kg/Kmol	52.02	lbm/lbmol	52.02
Critical temperature	°C	78.11	°F	172.59
Critical pressure	bara	57.82	psia	838.61
Critical density	kg/m³	424.00	lb/ft³	26.47
Normal boiling point	°C	-51.651	°F	-60.972
Latent heat of vapourisation at atmospheric pressure	kJ/kg	381.86	BTUIT/lb	164.17
Saturated vapour density at atmospheric pressure	kg/m³	2.9879	lb/ft³	0.19
Liquid vapour pressure @25°C	bara	16.896	psia	245.06
Coefficient of volumetric thermal expansion for saturated liquid at 25°C	°C⁻¹	0.00465	°F⁻¹	0.00258
Speed of sound* for saturated vapour at 25°C	m/s	203.72	ft/s	668.37
Adiabatic exponent* for saturated vapour at 25°C	–	1.68	–	1.68
Latent heat of vapourisation at 25°C	kJ/kg	270.910	BTUIT/lb	116.47
Saturated vapour density at 25°C	kg/m³	47.339	lb/ft³	2.955
Saturated vapour density at 0°C	kg/m³	22.091	lb/ft³	1.379

* Vapour composition as per bulk refrigerant at dew point

Get in touch

For more information, please contact our team. Please note that product availability may vary by region.

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Klea® 404A (R-404A) low and medium-temperature refrigerant

Overview

While still in broad use across the U.S. and globally, lower-GWP alternatives such as Klea® 407A is recommended for future-focused applications seeking reduced environmental impact.

Physical properties

Property	S.I. Units	Value	British Units	Value
Molecular weight	Kg/Kmol	52.02	lbm/lbmol	52.02
Critical temperature	°C	78.11	°F	172.59
Critical pressure	bara	57.82	psia	838.61
Critical density	kg/m³	424.00	lb/ft³	26.47
Normal boiling point	°C	-51.651	°F	-60.972
Latent heat of vapourisation at atmospheric pressure	kJ/kg	381.86	BTUIT/lb	164.17
Saturated vapour density at atmospheric pressure	kg/m³	2.9879	lb/ft³	0.19
Liquid vapour pressure @25°C	bara	16.896	psia	245.06
Coefficient of volumetric thermal expansion for saturated liquid at 25°C	°C⁻¹	0.00465	°F⁻¹	0.00258
Speed of sound* for saturated vapour at 25°C	m/s	203.72	ft/s	668.37
Adiabatic exponent* for saturated vapour at 25°C	–	1.68	–	1.68
Latent heat of vapourisation at 25°C	kJ/kg	270.910	BTUIT/lb	116.47
Saturated vapour density at 25°C	kg/m³	47.339	lb/ft³	2.955
Saturated vapour density at 0°C	kg/m³	22.091	lb/ft³	1.379

* Vapour composition as per bulk refrigerant at dew point

Klea® 404A (R-404A) low and medium-temperature refrigerant

Overview

While still in broad use across the U.S. and globally, lower-GWP alternatives such as Klea® 407A is recommended for future-focused applications seeking reduced environmental impact.

Physical properties

Property	S.I. Units	Value	British Units	Value
Molecular weight	Kg/Kmol	52.02	lbm/lbmol	52.02
Critical temperature	°C	78.11	°F	172.59
Critical pressure	bara	57.82	psia	838.61
Critical density	kg/m³	424.00	lb/ft³	26.47
Normal boiling point	°C	-51.651	°F	-60.972
Latent heat of vapourisation at atmospheric pressure	kJ/kg	381.86	BTUIT/lb	164.17
Saturated vapour density at atmospheric pressure	kg/m³	2.9879	lb/ft³	0.19
Liquid vapour pressure @25°C	bara	16.896	psia	245.06
Coefficient of volumetric thermal expansion for saturated liquid at 25°C	°C⁻¹	0.00465	°F⁻¹	0.00258
Speed of sound* for saturated vapour at 25°C	m/s	203.72	ft/s	668.37
Adiabatic exponent* for saturated vapour at 25°C	–	1.68	–	1.68
Latent heat of vapourisation at 25°C	kJ/kg	270.910	BTUIT/lb	116.47
Saturated vapour density at 25°C	kg/m³	47.339	lb/ft³	2.955
Saturated vapour density at 0°C	kg/m³	22.091	lb/ft³	1.379

* Vapour composition as per bulk refrigerant at dew point

Klea® 404A (R-404A) low and medium-temperature refrigerant

Overview

While still in broad use across the U.S. and globally, lower-GWP alternatives such as Klea® 407A is recommended for future-focused applications seeking reduced environmental impact.

Physical properties

Property	S.I. Units	Value	British Units	Value
Molecular weight	Kg/Kmol	52.02	lbm/lbmol	52.02
Critical temperature	°C	78.11	°F	172.59
Critical pressure	bara	57.82	psia	838.61
Critical density	kg/m³	424.00	lb/ft³	26.47
Normal boiling point	°C	-51.651	°F	-60.972
Latent heat of vapourisation at atmospheric pressure	kJ/kg	381.86	BTUIT/lb	164.17
Saturated vapour density at atmospheric pressure	kg/m³	2.9879	lb/ft³	0.19
Liquid vapour pressure @25°C	bara	16.896	psia	245.06
Coefficient of volumetric thermal expansion for saturated liquid at 25°C	°C⁻¹	0.00465	°F⁻¹	0.00258
Speed of sound* for saturated vapour at 25°C	m/s	203.72	ft/s	668.37
Adiabatic exponent* for saturated vapour at 25°C	–	1.68	–	1.68
Latent heat of vapourisation at 25°C	kJ/kg	270.910	BTUIT/lb	116.47
Saturated vapour density at 25°C	kg/m³	47.339	lb/ft³	2.955
Saturated vapour density at 0°C	kg/m³	22.091	lb/ft³	1.379

* Vapour composition as per bulk refrigerant at dew point

Do you have any questions?

Klea® 404A

Klea® 404A (R-404A) low and medium-temperature refrigerant

Overview

Applications

Composition

Key benefits

Physical properties

Get in touch

Do you have any questions?

Klea® 404A

Klea® 404A (R-404A) low and medium-temperature refrigerant

Overview

Applications

Composition

Key benefits

Physical properties

Get in touch

Do you have any questions?

Klea® 404A

Klea® 404A (R-404A) low and medium-temperature refrigerant

Overview

Applications

Composition

Key benefits

Physical properties

Get in touch

Klea® 404A

Klea® 404A (R-404A) low and medium-temperature refrigerant

Overview

Applications

Composition

Key benefits

Physical properties

Get in touch