# 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/2017/ohara_2017-11-30.agf">OHARA Zemax catalog 2017-11-30</a> (obtained from <a href="http://www.ohara-inc.co.jp/en/product/optical/list/">http://www.ohara-inc.co.jp</a>)<br>See also <a href="https://refractiveindex.info/download/data/2017/ohara_2017-11-30.pdf">OHARA glass data sheets</a>
COMMENTS: |
    Low Softening Temperature
DATA:
  - type: formula 2
    wavelength_range: 0.28 2.4
    coefficients: 0 1.97595301 0.0104276395 0.283924985 0.0427708222 1.35176368 101.45371
  - type: tabulated k
    data: |
        0.340 8.1054E-06
        0.350 3.7519E-06
        0.360 1.7127E-06
        0.370 9.2662E-07
        0.380 5.2723E-07
        0.390 3.1666E-07
        0.400 2.1053E-07
        0.420 1.1561E-07
        0.440 7.7891E-08
        0.460 5.5324E-08
        0.480 3.8389E-08
        0.500 2.3945E-08
        0.550 8.7623E-09
        0.600 9.5589E-09
        0.650 1.0355E-08
        0.700 5.5732E-09
        0.800 6.3694E-09
        0.900 1.4338E-08
        1.000 2.3909E-08
        1.200 2.8691E-08
        1.400 4.4653E-08
        1.600 7.6624E-08
        1.800 1.7293E-07
        2.000 5.0119E-07
        2.200 1.3649E-06
        2.400 5.4943E-06
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 5.28e-06 1.08e-08 3.8e-14 8.31e-07 7.62e-10 0.217
    nd: 1.832200
    Vd: 40.097595
    density:
      - value: 4650
    thermal_expansion:
      - temperature_range: 243 343
        value: 6.3e-06
    dPgF: -0.0052
    resistance:
        climatic: 2.0
        acid: 5.2
        phosphate: 1.2