R22 is a colorless gas under ordinary temperature and a colorless & transparentliquid under the pressure of itself, Vnon-toxic & inflammable with theexcellent thermo-stability and chemical stability, unable to erode metals andit is a refrigerant for low temperature to ﹣80℃below. https://www.refrigerantgasesltd.com
R404a
R404A is a colorless gas under ordinary temperature, and a colorless &transparent liquid under the pressure of itself, mixedby R125, R134a and R143. It is a long-term substitute for R502, mainly used inthe refrigerating systems of low & moderate temperature.