diff --git a/interfaces/cython/cantera/test/test_purefluid.py b/interfaces/cython/cantera/test/test_purefluid.py
index 32be4e723..95bc2ce8e 100644
--- a/interfaces/cython/cantera/test/test_purefluid.py
+++ b/interfaces/cython/cantera/test/test_purefluid.py
@@ -76,6 +76,14 @@ class TestPureFluid(utilities.CanteraTest):
         self.check_fd_properties(self.water.max_temp*(1-1e-5), 101325,
                               self.water.max_temp*(1-1e-4), 101325, 1e-2)
 
+    def test_TPX(self):
+        self.water.TX = 400, 0.8
+        T,P,X = self.water.TPX
+        self.assertNear(T, 400)
+        self.assertNear(X, 0.8)
+        with self.assertRaises(AttributeError):
+            self.water.TPX = 500, 101325, 0.3
+
 
 # To minimize errors when transcribing tabulated data, the input units here are:
 # T: K, P: MPa, rho: kg/m3, v: m3/kg, (u,h): kJ/kg, s: kJ/kg-K
diff --git a/interfaces/cython/cantera/thermo.pyx b/interfaces/cython/cantera/thermo.pyx
index ed31db70f..da7d1a1c8 100644
--- a/interfaces/cython/cantera/thermo.pyx
+++ b/interfaces/cython/cantera/thermo.pyx
@@ -1219,3 +1219,51 @@ cdef class PureFluid(ThermoPhase):
             P = values[0] if values[0] is not None else self.P
             X = values[1] if values[1] is not None else self.X
             self.thermo.setState_Psat(P, X)
+
+    property TDX:
+        """
+        Get the temperature [K], density [kg/m^3 or kmol/m^3], and vapor
+        fraction.
+        """
+        def __get__(self):
+            return self.T, self.density, self.X
+
+    property TPX:
+        """Get the temperature [K], pressure [Pa], and vapor fraction."""
+        def __get__(self):
+            return self.T, self.P, self.X
+
+    property UVX:
+        """
+        Get the internal energy [J/kg or J/kmol], specific volume
+        [m^3/kg or m^3/kmol], and vapor fraction.
+        """
+        def __get__(self):
+            return self.u, self.v, self.X
+
+    property DPX:
+        """Get the density [kg/m^3], pressure [Pa], and vapor fraction."""
+        def __get__(self):
+            return self.density, self.P, self.X
+
+    property HPX:
+        """
+        Get the enthalpy [J/kg or J/kmol], pressure [Pa] and vapor fraction.
+        """
+        def __get__(self):
+            return self.h, self.P, self.X
+
+    property SPX:
+        """
+        Get the entropy [J/kg/K or J/kmol/K], pressure [Pa], and vapor fraction.
+        """
+        def __get__(self):
+            return self.s, self.P, self.X
+
+    property SVX:
+        """
+        Get the entropy [J/kg/K or J/kmol/K], specific volume [m^3/kg or
+        m^3/kmol], and vapor fraction.
+        """
+        def __get__(self):
+            return self.s, self.v, self.X