The Dissociation node is used to model molecular dissociation in dielectric liquids under high electric field, also know as Wien effect or Onsager effect. This node is available as a subfeature of the Liquid feature when both positive and negative ions are solved. The new positive and negative ions generated by dissociation are added by the feature. Note that the ion–ion recombination has already been taken into account by its parent feature.

Apart from the zero-field electric conductivity, all other parameters used for computing dissociation rate are obtained from its parent feature. The zero-field electric conductivity can be specified through From material (default) or User defined.