# 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: 0.365015 2.32542
    coefficients: 0 1.07959634 0.00470047543 0.731872134 0.0198615758 1.17111107 87.03599
  - type: tabulated k
    data: |
        0.280 2.0981E-06
        0.290 1.4651E-06
        0.300 1.0654E-06
        0.310 7.7636E-07
        0.320 5.6823E-07
        0.330 3.6571E-07
        0.340 2.3739E-07
        0.350 1.4873E-07
        0.360 9.3172E-08
        0.370 5.9484E-08
        0.380 3.9569E-08
        0.390 2.8058E-08
        0.400 2.2360E-08
        0.420 1.6753E-08
        0.440 1.0520E-08
        0.460 1.0998E-08
        0.480 7.6471E-09
        0.500 3.9809E-09
        0.550 4.3790E-09
        0.600 4.7770E-09
        0.650 5.1751E-09
        0.700 5.5732E-09
        0.800 6.3694E-09
        0.900 7.1656E-09
        1.000 7.9617E-09
        1.200 9.5541E-09
        1.400 1.1197E-07
        1.600 1.1511E-07
        1.800 3.0401E-07
        2.000 8.3312E-07
        2.200 2.8452E-06
        2.400 1.0077E-05
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 9.24e-06 1.32e-08 -3.57e-11 5.77e-07 5.66e-10 0.206
    nd: 1.693040
    Vd: 52.930600
    density:
      - value: 3660
    thermal_expansion:
      - temperature_range: 243 343
        value: 5.4e-06
    dPgF: -0.0091
    resistance:
        climatic: 3.0
        acid: 53.0
        phosphate: 4.0