# 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: 0.35 2.5
    coefficients: 0 1.73155854 0.00953833914 0.150874455 0.0407887211 1.06586596 98.0758545
  - type: tabulated k
    data: |
        0.350 3.1344E-06
        0.365 1.0079E-06
        0.370 7.2571E-07
        0.380 3.9735E-07
        0.390 2.3131E-07
        0.400 1.4838E-07
        0.405 1.2158E-07
        0.420 8.2721E-08
        0.436 6.3901E-08
        0.460 4.7621E-08
        0.500 2.4054E-08
        0.546 1.2209E-08
        0.580 1.2969E-08
        0.620 1.3863E-08
        0.660 1.4758E-08
        0.700 1.5652E-08
        1.060 2.3702E-08
        1.530 9.8390E-08
        1.970 8.0161E-07
        2.325 4.0314E-06
        2.500 9.3200E-06
SPECS:
    n_is_absolute: false
    λ_is_vacuum: false
    temperature: 20.0 °C
    coefficients_of_thermal_dispersion: -2.35e-06 1.07e-08 -9.38e-12 5.72e-07 6.01e-10 0.22
    n_d: 1.717
    V_d: 47.96
    glass_code: 717480.414
    glass_status: special
    density: 4.14 g/cm<sup>3</sup>
    coefficient_of_thermal_expansion_1: 7.6e-06 K<sup>-1</sup>
    coefficient_of_thermal_expansion_2: 8.7e-06 K<sup>-1</sup>
    ΔP_gF: -0.0028
    climatic_resistance: 2.0
    stain_resistance: 3.0
    acid_resistance: 52.3
    alkali_resistance: 1.2
    phosphate_resistance: 3.3
