the product is used as refrigernant or to make blend refrigerants such as R404, R408, R507. Technical specifications:Mass fraction of 1,1,1,2-tetrafluoroethane≥99.9%Mass fraction of moisture≤ 0.001Acidity (as HCL) ≤0.00001Mass fraction of evaporated residue≤0.01Volume fraction of non-condensable gases at 25 degree≤1.5the product is used as refrigernant or to make blend refrigerants such as R404, ...