Absorptivity and emissivity of dielectrics and other materials
From Thermal-FluidsPedia
MATERIAL Solar Normal
Total Absorptivity
αn, solarTotal Hemispherical Emissivity at Moderate Temperature, ε 
Aluminum Oxide, Al2O3 0.06-0.23 Bricks, red 0.55 0.92 0.60 Bricks, white refractory 0.29 0.69 0.42 Carbon black, lampblack 0.98 0.95 1.0 Magnesium Carbonate, MgCO3 0.025-0.04 0.79 0.03-0.05 Magnesium Oxide, MgO 0.15 0.6* 0.22 Paints Magnesium oxide white 0.09 Titanium oxide white 0.20 Zinc oxide white 0.15 Carbon black paint 0.96 0.88 1.1 Oil, light green 0.50 0.92-0.96 * 0.53 Oil, light gray 0.75 0.92-0.96 * 0.80 Snow, fine, fresh 0.13 0.82 0.16 Snow, ice granules 0.33 0.89 0.37 Soil, black loam 0.9 0.66 * 1.50 Soil, plowed 0.75 0.90 0.83
References
Agnihotri, O.P. and Gupta, B.K., 1981, Solar Selective Surfaces, John Wiley & Sons, New York.
Faghri, A., and Zhang, Y., 2006, Transport Phenomena in Multiphase Systems, Elsevier, Burlington, MA.
Faghri, A., Zhang, Y., and Howell, J. R., 2010, Advanced Heat and Mass Transfer, Global Digital Press, Columbia, MO.
Kreider, J.F. and Kreith, F., 1981, Solar Energy Handbook, McGraw-Hill, New York, 1981.
Siegel, R. and Howell, J.R., 2002, Thermal Radiation Heat Transfer, Taylor and Francis, New York.
Touloukian, Y.S. and DeWitt, D.P., (eds.), 1970-[79], Thermophysical Properties of Matter, Vol. 7, Thermal radiative properties: metallic elements and alloys, and Vol. 8. Thermal radiative properties: non-metallic solids, IFI/Plenum, New York.