# this file is part of refractiveindex.info database
# refractiveindex.info database is in the public domain
# copyright and related rights waived via CC0 1.0

REFERENCES: |
    <a href="https://refractiveindex.info/download/data/2023/BK-7-Matching-Liquid.pdf">
    BK-7 Matching Liquid Data Sheet 27-March-2023
    </a>
    (obtained from <a href="https://www.cargille.com/matching-liquids/">https://www.cargille.com</a>)
COMMENTS: |
    25 °C
DATA:
  - type: formula 5
    wavelength_range: 0.35 1.55
    coefficients: 1.502639 4.7089420E-3 -2 6.3670450E-5 -4
  - type: tabulated k
    data: |
        0.3500 1.243E-05
        0.3650 1.899E-06
        0.4047 5.234E-07
        0.4800 1.163E-07
        0.4861 7.815E-08
        0.5461 0.000E+00
        0.5893 0.000E+00
        0.6328 0.000E+00
        0.6439 0.000E+00
        0.6563 0.000E+00
        0.6943 0.000E+00
        0.8400 0.000E+00
        1.0648 1.712E-07
        1.3000 5.306E-07
        1.5500 1.258E-06
CONDITIONS:
    temperature: 298
PROPERTIES:
    density:
      - temperature: 298
        value: 1322
    thermal_expansion:
      - temperature: 298
        value: 0.0007
    freezing_point:
      - value: 264