R508B Refrigerant

R508B ultra-low temperature refrigerants (R-508B, SUVA95, Genetron 508B) are environmentally friendly azeotropic refrigerants that are completely free of CFCs and HCFC substances that destroy the ozone layer. They are recognized and recommended by most countries in the world. Mainstream ultra-low temperature environmentally friendly refrigerants are widely used for re-addition during initial installation and maintenance of new refrigeration equipment (ultra-low temperature, cryogenic). R508B is widely usedultralow temperature refrigerant, yesR13、R503andR23The substitutes for, mainly used in cryogenic equipment such as environmental test chambers/equipment (cold and hot impact testers), freeze-drying machines/freeze-dryers, ultra-low temperature refrigerators or freezers, blood bank refrigerators, and biochemical test chambers (including scientific research refrigeration, Medical refrigeration, etc.), which is more common in low temperature stages used in these cascade refrigeration systems. The cooling temperature of R508B can be reduced to-80 ° C or even lower. It is a long-term replacement for R13, R503 and R23 that meet industry standards. It is fully adapted to the working environment of R503.

R508B refrigerant belongs to the PFC class and is an industrial-grade alternative to R-13 and R503 in ultra-low temperature applications [as low as-40 ° F to-150 ° F (-40 ° C to-101 ° C)], such as pharmaceutical cold storage and environmental laboratories. This product is superior to the R23, including reduced compressor discharge temperatures, and is the best choice for critical applications that ensure the most appropriate system reliability. The R508B can be used in new equipment or can be used to replace existing systems. Applications Ultra-low temperature environments [as low as-40 ° F to-150 ° F (-40 ° C to-101 ° C)]: drug cold storage; environmental laboratory. Support from many OEMs; Extended equipment life: Lower exhaust temperature than R23, extending compressor life; Improved cooling capacity: 30% higher cooling capacity than R13; is the best match for the R503 system as a direct replacement refrigerant.

Although R508B refrigerant is the most common choice to replace Freon R503 and R13 in newly installed ultra-low temperature refrigeration equipment, since R508B is different from R503 and R13 in physical and chemical properties, theoretical cycle performance, and compressor oil, for after-sales maintenance of refrigeration equipment initially installed with R503 and R13 refrigerants, if it is necessary to add or replace additional refrigerants, only R503 and R13 can be added. Usually, R508B cannot be directly used to replace R503, R13 (that is to say, replacement in the form of blood exchange is usually not possible).

R508B refrigerant components
Mole percentage: R23 accounts for 62.6751%, R116 accounts for 37.3249%
Mass percentage: R23 accounts for 46%, R116 accounts for 54%

R508B matching refrigeration oil
Emkarate RL 32H, Solest LT-32, etc.; what kind of refrigeration oil is ultimately used in different equipment and different application locations should be determined in accordance with the recommendations of refrigeration compressor and refrigeration (air conditioning) equipment manufacturers, or based on the specific conditions of use of the refrigeration compressor and refrigeration equipment. Use refrigerator lubricants with the same design requirements, that is, use equivalentrefrigeration oil。

R508B refrigerant parameters

Regulatory data updated: 2026-09-18 · v2026.09.12