At Nippon Gases we are called “The Gas Professionals” for a reason, and it’s because we’ll be able to solve any doubt.
HFOs are a compromise between very low greenhouse effect and, for some molecules, limited flammability.
In order to categorize this characteristic, a new ASHRAE classification has been introduced which takes into account the difference in the flame spread speed of flammable substances compared to moderately flammable ones (<0.1 m/s)
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R-452B
Opteon™ XL55 - Solstice® L41y
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R-454A
Opteon™ XL40
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R-454B
Opteon™ XL41
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R-454C
Opteon™ XL20
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R-455A
Solstice® L40X