To my surprise, the refraction index of EPOTEK-301-2 glue is not that well known in the DIRC wavelength region. Ref.1 used information from the Epoxy Technology Company. In the mean time I have learned that this information is based on the liquid glue sample. No data exists for the cured epoxy; the company representative guessed that the cured EPOTE-301-2 glue may have the refraction index as much as 0.03 higher, which is a quite substantial amount. I decided to resolve this puzzle by measuring the refraction index of solid EPOTEK-301-2 glue by casting it into a prism form. The measurement was performed at four laser wavelengths. The paper also presents a direct measurement of the reflectivity from the interface of the glue and fused silica at 442nm as a function of incident angle, and finds a slight disagreement with the Fresnel theory, if one uses the newly measured refraction index. Both measurements presented in this paper are important input for the photon background study presented in the Ref. 2. Show Partial Abstract