# 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=\"http://refractiveindex.info/download/data/2017/schott_2017-01-20b.agf\">SCHOTT Zemax catalog 2017-01-20b</a> (obtained from <a href=\"http://www.schott.com/advanced_optics/english/download/\">http://www.schott.com</a>)<br>See also <a href=\"http://refractiveindex.info/download/data/2017/schott_2017-01-20.pdf\">SCHOTT glass data sheets</a>"
COMMENTS: "inquiry glass        "
DATA:
  - type: formula 2 
    range: 0.38 2.5
    coefficients: 0 1.28773667 0.0055754192 0.518244853 0.0223679524 26.1756109 1892.2533
  - type: tabulated k
    data: |
        0.390 5.7169E-06
        0.400 4.0984E-06
        0.405 3.1042E-06
        0.420 1.5233E-06
        0.436 7.8013E-07
        0.460 3.0854E-07
        0.500 1.1550E-07
        0.546 6.3721E-08
        0.580 5.0533E-08
        0.620 4.3902E-08
        0.660 3.8160E-08
        0.700 3.1415E-08
        1.060 1.3523E-08
        1.530 6.3727E-08
        1.970 5.9139E-07
        2.325 5.2793E-06
        2.500 1.4583E-05
SPECS:
    n_is_absolute: false
    λ_is_vacuum: false
    n_d: 1.69064
    V_d: 54.76
    glass_code: 691548.353
    glass_status: special
    density: 3.525 g/cm<sup>3</sup>
    coefficient_of_thermal_expansion_1: 6.34e-06 K<sup>-1</sup>
    coefficient_of_thermal_expansion_2: 7.56e-06 K<sup>-1</sup>
    ΔP_gF: -0.0055
    climatic_resistance: 1.0
    stain_resistance: 2.0
    acid_resistance: 53.0
    alkali_resistance: 1.3
    phosphate_resistance: 4.3
