# 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: "         "
DATA:
  - type: formula 2 
    range: 0.35 2.5
    coefficients: 0 1.72878017 0.00886014635 0.169257825 0.0363416509 1.19386956 82.9009069
  - type: tabulated k
    data: |
        0.350 2.2730E-06
        0.365 7.5975E-07
        0.370 5.4416E-07
        0.380 3.1614E-07
        0.390 2.0175E-07
        0.400 1.3415E-07
        0.405 1.2158E-07
        0.420 8.2721E-08
        0.436 5.2324E-08
        0.460 3.4071E-08
        0.500 1.9214E-08
        0.546 1.0459E-08
        0.580 1.2969E-08
        0.620 1.1877E-08
        0.660 1.2643E-08
        0.700 1.1169E-08
        1.060 1.6913E-08
        1.530 1.1332E-07
        1.970 8.0161E-07
        2.325 6.0758E-06
        2.500 1.6873E-05
SPECS:
    n_is_absolute: false
    λ_is_vacuum: false
    temperature: 20.0 °C
    coefficients_of_thermal_dispersion: 4.1e-06 1.23e-08 -7.85e-12 5.08e-07 5.76e-10 0.205
    n_d: 1.72003
    V_d: 50.62
    glass_code: 720506.369
    glass_status: standard
    density: 3.689 g/cm<sup>3</sup>
    coefficient_of_thermal_expansion_1: 5.68e-06 K<sup>-1</sup>
    coefficient_of_thermal_expansion_2: 6.83e-06 K<sup>-1</sup>
    ΔP_gF: -0.0072
    climatic_resistance: 2.0
    stain_resistance: 2.0
    acid_resistance: 52.3
    alkali_resistance: 1.0
    phosphate_resistance: 3.0
