The standard entropy (1/2 H2gas) was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1310. G_0 = -19.48112E6 J kmol-1 The standard entropy (1/2 D2 gas) was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1040. There is no reference state thermodynamic data tabulated for this element. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1361. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1493. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 361. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 177. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 550. The standard entropy (1/2 N2 gas) was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1621. The standard entropy (1/2 O2 gas) was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1745. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1099. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1695. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1637. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1529. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 59. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1881. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1817. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1859. The standard entropy (1/2 Cl2 gas) was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 811. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 175. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1465. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 703. No reference state data for this element in the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1907. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1917. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 959. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1571. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1221. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 943. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1697. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1005. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1935. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1253. The standard entropy was taken from Robie and Hemingway (1995), Thermodynamic Properties of Minerals and Related Substances, USGS Bulletin 2131, p. 88. The standard entropy was taken from Robie and Hemingway (1995), Thermodynamic Properties of Minerals and Related Substances, USGS Bulletin 2131, p. 69. The standard entropy was taken from Robie and Hemingway (1995), Thermodynamic Properties of Minerals and Related Substances, USGS Bulletin 2131, p. 107 The standard entropy (1/2 Br2 gas) was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 470. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1491. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1849. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1891. No reference state data found for Y. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1943. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1675. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1577. The standard entropy was taken from the OECD-NEA handbook (Guillaumont et al., 2003) "UPDATE ON THE CHEMICAL THERMODYNAMICS OF URANIUM, NEPTUNIUM, PLUTONIUM, AMERICIUM AND TECHNETIUM", Table 7-1, p. 127. The standard entropy was taken from Robie and Hemingway (1979), Thermodynamic Properties of Minerals and Related Substances at 298.15 K and 1 bar (10^5 Pascals) Pressure abd at Higher Temperatures, USGS Bulletin 1452, p. 92. The standard entropy was taken from Robie and Hemingway (1979), Thermodynamic Properties of Minerals and Related Substances at 298.15 K and 1 bar (10^5 Pascals) Pressure abd at Higher Temperatures, USGS Bulletin 1452, p. 90. The standard entropy was taken from Robie and Hemingway (1979), Thermodynamic Properties of Minerals and Related Substances at 298.15 K and 1 bar (10^5 Pascals) Pressure abd at Higher Temperatures, USGS Bulletin 1452, p. 84. The standard entropy was taken from Robie and Hemingway (1995), Thermodynamic Properties of Minerals and Related Substances, USGS Bulletin 2131, p. 67. The standard entropy was taken from Robie and Hemingway (1995), Thermodynamic Properties of Minerals and Related Substances, USGS Bulletin 2131, p. 79. The standard entropy was taken from Robie and Hemingway (1979), Thermodynamic Properties of Minerals and Related Substances at 298.15 K and 1 bar (10^5 Pascals) Pressure abd at Higher Temperatures, USGS Bulletin 1452, p. 64. The standard entropy was taken from Robie and Hemingway (1995), Thermodynamic Properties of Minerals and Related Substances, USGS Bulletin 2131, p. 109. The standard entropy was taken from Robie and Hemingway (1995), Thermodynamic Properties of Minerals and Related Substances, USGS Bulletin 2131, p. 106. The standard entropy was taken from Robie and Hemingway (1995), Thermodynamic Properties of Minerals and Related Substances, USGS Bulletin 2131, p. 111. The standard entropy (1/2 I2) was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1413. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1933. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 977. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 319. The standard entropy was taken from Robie and Hemingway (1979), Thermodynamic Properties of Minerals and Related Substances at 298.15 K and 1 bar (10^5 Pascals) Pressure abd at Higher Temperatures, USGS Bulletin 1452, p. 68. The standard entropy was taken from Robie and Hemingway (1995), Thermodynamic Properties of Minerals and Related Substances, USGS Bulletin 2131, p. 80. The standard entropy was taken from Robie and Hemingway (1979), Thermodynamic Properties of Minerals and Related Substances at 298.15 K and 1 bar (10^5 Pascals) Pressure abd at Higher Temperatures, USGS Bulletin 1452, p. 85. The standard entropy was taken from Robie and Hemingway (1979), Thermodynamic Properties of Minerals and Related Substances at 298.15 K and 1 bar (10^5 Pascals) Pressure abd at Higher Temperatures, USGS Bulletin 1452, p. 77. There is no handbook standard state thermodynamic data for this element. There are estimates for stability constants of aqueous and solid species in Spahiu and Bruno (1995), A Selected Thermodynamic Database for REE to be Used in HLNW Performance Assessment Exercises. SKB Technical Report 95-35. Stockholm, Sweden: Swedish Nuclear Fuel and Waste Management Company. The compilation of Konings et al. list an estimated standard entropy value for Pm of 158.0 J/K/mol at 298.15 K but with a non-zero enthalpy of formation which is not indicative of a reference state form for this element. The standard entropy was taken from Robie and Hemingway (1979), Thermodynamic Properties of Minerals and Related Substances at 298.15 K and 1 bar (10^5 Pascals) Pressure abd at Higher Temperatures, USGS Bulletin 1452, p. 100. The standard entropy was taken from Robie and Hemingway (1979), Thermodynamic Properties of Minerals and Related Substances at 298.15 K and 1 bar (10^5 Pascals) Pressure abd at Higher Temperatures, USGS Bulletin 1452, p. 52. The standard entropy was taken from Robie and Hemingway (1979), Thermodynamic Properties of Minerals and Related Substances at 298.15 K and 1 bar (10^5 Pascals) Pressure abd at Higher Temperatures, USGS Bulletin 1452, p. 55. The standard entropy was taken from Robie and Hemingway (1979), Thermodynamic Properties of Minerals and Related Substances at 298.15 K and 1 bar (10^5 Pascals) Pressure abd at Higher Temperatures, USGS Bulletin 1452, p. 104. The standard entropy was taken from Robie and Hemingway (1979), Thermodynamic Properties of Minerals and Related Substances at 298.15 K and 1 bar (10^5 Pascals) Pressure abd at Higher Temperatures, USGS Bulletin 1452, p. 50. The standard entropy was taken from Robie and Hemingway (1979), Thermodynamic Properties of Minerals and Related Substances at 298.15 K and 1 bar (10^5 Pascals) Pressure abd at Higher Temperatures, USGS Bulletin 1452, p. 62. The standard entropy was taken from Robie and Hemingway (1979), Thermodynamic Properties of Minerals and Related Substances at 298.15 K and 1 bar (10^5 Pascals) Pressure abd at Higher Temperatures, USGS Bulletin 1452, p. 51. The standard entropy was taken from Robie and Hemingway (1979), Thermodynamic Properties of Minerals and Related Substances at 298.15 K and 1 bar (10^5 Pascals) Pressure abd at Higher Temperatures, USGS Bulletin 1452, p. 109. The standard entropy was taken from Robie and Hemingway (1979), Thermodynamic Properties of Minerals and Related Substances at 298.15 K and 1 bar (10^5 Pascals) Pressure abd at Higher Temperatures, USGS Bulletin 1452, p. 115. The standard entropy was taken from Robie and Hemingway (1979), Thermodynamic Properties of Minerals and Related Substances at 298.15 K and 1 bar (10^5 Pascals) Pressure abd at Higher Temperatures, USGS Bulletin 1452, p. 70. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1363. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1899. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1925. The standard entropy was taken from Robie and Hemingway (1979), Thermodynamic Properties of Minerals and Related Substances at 298.15 K and 1 bar (10^5 Pascals) Pressure abd at Higher Temperatures, USGS Bulletin 1452, p. 89. The standard entropy was taken from Robie and Hemingway (1979), Thermodynamic Properties of Minerals and Related Substances at 298.15 K and 1 bar (10^5 Pascals) Pressure abd at Higher Temperatures, USGS Bulletin 1452, p. 81. The standard entropy was taken from Robie and Hemingway (1979), Thermodynamic Properties of Minerals and Related Substances at 298.15 K and 1 bar (10^5 Pascals) Pressure abd at Higher Temperatures, USGS Bulletin 1452, p. 65. The standard entropy was taken from Robie and Hemingway (1995), Thermodynamic Properties of Minerals and Related Substances, USGS Bulletin 2131, p. 103. The standard entropy was taken from Robie and Hemingway (1995), Thermodynamic Properties of Minerals and Related Substances, USGS Bulletin 2131, p. 70. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1373. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1907. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1835. The standard entropy was taken from Robie and Hemingway (1995), Thermodynamic Properties of Minerals and Related Substances, USGS Bulletin 2131, p. 74. No standard state thermodynamic data for this element. No standard state thermodynamic data for this element. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1857. No standard state thermodynamic data for this element. No standard state thermodynamic data for this element. No standard state thermodynamic data for this element. The standard entropy was taken from the OECD-NEA handbook (Guillaumont et al., 2003) "UPDATE ON THE CHEMICAL THERMODYNAMICS OF URANIUM, NEPTUNIUM, PLUTONIUM, AMERICIUM AND TECHNETIUM", Table 8-1, p. 145. No standard state thermodynamic data for this element. The standard entropy was taken from the OECD-NEA handbook (Guillaumont et al., 2003) "UPDATE ON THE CHEMICAL THERMODYNAMICS OF URANIUM, NEPTUNIUM, PLUTONIUM, AMERICIUM AND TECHNETIUM", Table 3-1, p. 45. The standard entropy was taken from the OECD-NEA handbook (Guillaumont et al., 2003) "UPDATE ON THE CHEMICAL THERMODYNAMICS OF URANIUM, NEPTUNIUM, PLUTONIUM, AMERICIUM AND TECHNETIUM", Table 4-1, p. 81. The standard entropy was taken from the OECD-NEA handbook (Guillaumont et al., 2003) "UPDATE ON THE CHEMICAL THERMODYNAMICS OF URANIUM, NEPTUNIUM, PLUTONIUM, AMERICIUM AND TECHNETIUM", Table 5-1, p. 99. The entropy is zero so as not to overcount. The 1/2 H2(g) entropy is handled elsewhere. The entropy is zero so as to make the 'dummy' dodecane phase inert. This phase is used in TBP equilibrium problems as an 'inert' diluent. The atomicWt is that reported for dodecane.