Send us a Message

Submit Data |  Help |  Video Tutorials |  News |  Publications |  Download |  REST API |  Citing RGD |  Contact   


The Chemical Entities of Biological Interest (ChEBI) ontology is downloaded weekly from EMBL-EBI at The data is made available under the Creative Commons License (CC BY 3.0, For more information see: Degtyarenko et al. (2008) ChEBI: a database and ontology for chemical entities of biological interest. Nucleic Acids Res. 36, D344–D350.

go back to main search page
Accession:CHEBI:78433 term browser browse the term
Definition:A substance used in a thermodynamic heat pump cycle or refrigeration cycle that undergoes a phase change from a gas to a liquid and back. Refrigerants are used in air-conditioning systems and freezers or refrigerators and are assigned a 'R' number (by ASHRAE - formerly the American Society of Heating, Refrigerating and Air Conditioning Engineers), which is determined systematically according to their molecular structure.
Synonyms:related_synonym: refrigerants
 xref: Wikipedia:Refrigerant

show annotations for term's descendants           Sort by:

Your selection has 18161 annotated objects. The maximum number of objects that can be shown is 2000. The list is too large to display.

  • Select a more specific term using the term browser
  • Download the entire list for this term
  • Display annotations for this term only (exclude descendants)

  • Term paths to the root
    Path 1
    Term Annotations click to browse term
      CHEBI ontology 19812
        role 19784
          application 19615
            refrigerant 18161
              1,1,2-Trichlorotrifluoroethane 0
              ammonia + 17652
              bromoethane 1
              butane + 91
              carbon dioxide 22
              chloroform + 117
              chloromethane 2
              dichloromethane 188
              diethyl ether 0
              difluoromethane + 0
              dinitrogen oxide 8
              ethane + 6343
              ethene + 7695
              fluoroform + 6716
              fluoromethane 0
              hexachloroethane 0
              hexafluoroethane 0
              isobutane + 1038
              isopentane + 3
              methyl formate 0
              pentane + 240
              propene + 3
              sulfur dioxide 133
              tetrachloromethane 7419
              tetrafluoromethane + 6716
              trichlorofluoromethane 0
    paths to the root