diff --git a/include/cantera/thermo/ThermoPhase.h b/include/cantera/thermo/ThermoPhase.h
index a6f06d8ff..318a9be00 100644
--- a/include/cantera/thermo/ThermoPhase.h
+++ b/include/cantera/thermo/ThermoPhase.h
@@ -1427,10 +1427,17 @@ public:
      * required after all species have been added. For example, it might be used
      * to resize internal work arrays that must have an entry for each species.
      * The base class implementation does nothing, and subclasses that do not
-     * require initialization do not need to overload this method.  When
-     * importing a CTML phase description, this method is called from
+     * require initialization do not need to overload this method. Derived
+     * classes which do override this function should call their parent class's
+     * implementation of this function as their last action.
+     *
+     * When importing a CTML phase description, this method is called from
      * initThermoXML(), which is called from importPhase(), just prior to
      * returning from function importPhase().
+     *
+     * When importing from an AnyMap phase desciption (or from a YAML file),
+     * this method is responsible for setting model parameters from the data
+     * stored in #m_input.
      */
     virtual void initThermo();
 
@@ -1454,6 +1461,13 @@ public:
     virtual void getParameters(int& n, doublereal* const c) const {
     }
 
+    //! Set equation of state parameters from an AnyMap phase description
+    void setParameters(const AnyMap& phaseNode);
+
+    //! Access input data associated with the phase description
+    const AnyMap& input() const;
+    AnyMap& input();
+
     //! Set equation of state parameter values from XML entries.
     /*!
      * This method is called by function importPhase() when processing a phase
@@ -1606,6 +1620,10 @@ protected:
      */
     MultiSpeciesThermo m_spthermo;
 
+    //! Data supplied via setParameters. When first set, this may include
+    //! parameters used by different phase models when initThermo() is called.
+    AnyMap m_input;
+
     //! Vector of pointers to the species databases.
     /*!
      * This is used to access data needed to construct the transport manager and
diff --git a/src/thermo/ThermoFactory.cpp b/src/thermo/ThermoFactory.cpp
index efee3ea21..bdc7c24a4 100644
--- a/src/thermo/ThermoFactory.cpp
+++ b/src/thermo/ThermoFactory.cpp
@@ -498,6 +498,7 @@ void setupPhase(ThermoPhase& thermo, const AnyMap& phaseNode,
         addSpecies(thermo, AnyValue("all"), rootNode["species"]);
     }
 
+    thermo.setParameters(phaseNode);
     thermo.initThermo();
 
     if (phaseNode.hasKey("state")) {
diff --git a/src/thermo/ThermoPhase.cpp b/src/thermo/ThermoPhase.cpp
index e59875332..e316d7652 100644
--- a/src/thermo/ThermoPhase.cpp
+++ b/src/thermo/ThermoPhase.cpp
@@ -750,6 +750,21 @@ const std::vector<const XML_Node*> & ThermoPhase::speciesData() const
     return m_speciesData;
 }
 
+void ThermoPhase::setParameters(const AnyMap& phaseNode)
+{
+    m_input = phaseNode;
+}
+
+const AnyMap& ThermoPhase::input() const
+{
+    return m_input;
+}
+
+AnyMap& ThermoPhase::input()
+{
+    return m_input;
+}
+
 void ThermoPhase::setStateFromXML(const XML_Node& state)
 {
     string comp = getChildValue(state,"moleFractions");