# this file is part of refractiveindex.info database
# refractiveindex.info database is in the public domain
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REFERENCES: "<a href=\"https://refractiveindex.info/download/data/2013/schott-infrared-chalcogenide-glasses-irg25-october-2013-us.pdf\">SCHOTT Infrared Chalcogenide Glasses - IRG 25 Product flyer (Version May 2013)</a>"
COMMENTS: "20 °C"
DATA:
  - type: formula 1
    range: 0.85 12
    coefficients: 2.75840 3.09812 0.399523 1.64139 45.1071
