Physical Feature Physical Index HMTEK-134A R134A boiling point,℃ -29.4 -26.2 vapor tension(25℃),mpa 0.68 0.66 steam Latent heat Kcal/kg 72.3 42.6 density(25℃).Liquid,g/cm3 0.935 1.187 melting oil performance mineral oil or synthetic oil synthetic oil refrigerating capacity of relative capacity 1.10 1.00 operating condition of air conditioners toxicity Naught Naught danger class 2.2level 2.2level ODP(R-12:1) 0.036 GWP(R-12:1) 0.1877 Quality Index Titles of Index numerical value purity,%≥ 99.8 Moisture,mg/kg≤ 10 acidity≤ 1.0 residue % 0.01 deflocculated gas % ≤ 1.5