... .This fire-extinguisher agent boast of the characteristics of high performance, little pollution , sound insulation and efficiency, ... such as in the sites of nonrenewable resources, like electrical ,communication,metallurgy, electric power, petroleum, chemical,culture heritage ... is -1.4°C,freezing point is -93.6°C,its liquid density is 1.376g/m³ ... of evaporated residue % ≤0.01 ≤0.01 high quality R236fa