# this file is part of refractiveindex.info database
# refractiveindex.info database is in the public domain
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REFERENCES: "K. Moutzouris, I. Stavrakas, D. Triantis and M. Enculescub. Temperature-dependent refractive index of potassium acid phthalate (KAP) in the visible and near-infrared, <a href=\"https://doi.org/10.1016/j.optmat.2010.12.021\"><i>Optical Materials</i> <b>33</b>, 812-816 (2011)</a>"
COMMENTS: "n<sub>β</sub>; 24.5 °C (see the original publication for temperature-dependent dispersion formula)."
DATA:
  - type: formula 4
    wavelength_range: 0.450 1.551
    coefficients: 2.670444937 0.031617528 0 0.208293225 2 0 0 0 1 -0.004014395 2