R245fa NOVEC 7000 R123 R134a
Autoignition Temperature (°C) 412 415 770 >750
Volatility Range Low Medium High Low
Boiling Point @ 1atm (°C) 15.3 34 27.9 -26.2
Labeling Pictograms
Hazard Statement Contains gas under pressure; may explode if heated.
Asphyxiate in high concentrations.
Contains gas under pressure.
Acidity.
Acidity.
Colorless.
Volatile liquid with ethereal and faint sweetish odor.
Has Halogens acids and possibly carbonyl halides.
Hazardous polymerization will not occur.
∆hVap. (kj/kg)
@ 100 °C
134.4 105.9 Not Available Not Available
ᵖVap. (kg/m3)
@ 100 °C
73.15 53.03 Not Available Not Available
  Toxicity Oral
Inhalation
Dermal
Skin
Oral
Inhalation
Eyes
Ingestion
Skin
Eyes
Inhalation
Ingestion
Skin
Eyes
Inhalation
Ingestion
Table 1: Choosing the suitable working fluid in ORC thermodynamic cycle.