**MD2M**

MD2M provides high accuracy thermodynamic properties for decamethyltetrasiloxane (C10H30O2Si4, MW=310.69 g/gmole, CAS#=141-62-8) using the Fundamental Equation of State presented in:

Monika Thol, Frithjof H. Dubberke,Elmar Baumhogger, Jadran Vrabec, and Roland Span

Speed of Sound Measurements and Fundamental Equations of State for Octamethyltrisiloxane and Decamethyltetrasiloxane

*J. Chem. Eng. Data 2017, 62, 2633-2648*

The correlation is implemented for temperatures in the range between 205K and 600 K and for pressures less than 130 MPa.

Values of specific enthalpy and entropy are referred to 0 for saturated liquid at the normal boiling point (467.59 K).

The viscosity and thermal conductivity for the liquid phase for temperatures between 230 K and 600 K are from;

Rima Abbas, E. Christian Ihmels, Sabine Enders, and J€urgen Gmehling

Measurement of Transport Properties for Selected Siloxanes and Their Mixtures Used as Working Fluids for Organic Rankine Cycles

*Ind. Eng. Chem. Res. 2011, 50, 8756-8763*

Viscosity and thermal conductivity for the vapor phase are estimated using a corresponding states approach as described in:

Klein, S.A., McLinden, M.O., and Laesecke , A.,

An improved extended corresponding states method for estimation of viscosity of pure refrigerants and mixtures

*Int. J. of Refrigeration, 20, pp. 208-217, 1997*

and

McLinden et al.,

An extended corresponding states model for the thermal conductivity of refrigerants and refrigerant mixtures

*Int. J. of Refrigeration, 23, pp. 43-63, 2000*

Surface Tension data are from:

A. Mulero and I. Cachadiña

Recommended Correlations for the Surface Tension of Several Fluids Included in the REFPROP Program

*Journal of Physical and Chemical Reference Data 43, 023104 (2014); *