# 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/schott_2017-01-20b.agf">SCHOTT Zemax catalog 2017-01-20b</a> (obtained from <a href="https://www.schott.com/en-us/products/optical-glass-p1000267/downloads/">http://www.schott.com</a>)<br>See also <a href="https://refractiveindex.info/download/data/2017/schott_2017-01-20.pdf">SCHOTT glass data sheets</a>
COMMENTS: |
    was replaced by N-SF14
DATA:
  - type: formula 2
    wavelength_range: 0.39 2.5
    coefficients: 0 1.69182538 0.0133151542 0.285919934 0.0612647445 1.12595145 118.405242
  - type: tabulated k
    data: |
        0.390 3.9959E-06
        0.400 1.6208E-06
        0.405 1.1494E-06
        0.420 4.0255E-07
        0.436 1.9327E-07
        0.460 9.0600E-08
        0.500 4.1928E-08
        0.546 2.0982E-08
        0.580 1.8555E-08
        0.620 1.9835E-08
        0.660 2.1114E-08
        0.700 1.7897E-08
        1.060 1.0137E-08
        1.530 8.8461E-08
        1.970 5.2286E-07
        2.325 2.7461E-06
        2.500 4.0650E-06
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 8.85e-06 1.81e-08 -4.12e-11 1.39e-06 1.53e-09 0.279
    nd: 1.76182
    Vd: 26.53
    glass_code: 762265.454
    glass_status: preferred
    density:
      - value: 4540
    thermal_expansion:
      - temperature_range: 243 343
        value: 6.6e-06
      - temperature_range: 293 573
        value: 7.4e-06
    dPgF: 0.0134
    resistance:
        climatic: 1.0
        stain: 0.0
        acid: 1.0
        alkali: 1.2
        phosphate: 1.0