# 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: "suitable for precision molding. step 0.5 available        "
DATA:
  - type: formula 2 
    range: 0.31 2.5
    coefficients: 0 1.3322245 0.0084029848 0.28924161 0.034423972 1.15161734 88.4310532
  - type: tabulated k
    data: |
        0.310 3.8602E-06
        0.320 1.9324E-06
        0.334 8.4894E-07
        0.350 3.5061E-07
        0.365 1.4852E-07
        0.370 1.1107E-07
        0.380 7.4843E-08
        0.390 5.4562E-08
        0.400 4.1410E-08
        0.405 3.7938E-08
        0.420 3.3847E-08
        0.436 3.0873E-08
        0.460 2.6596E-08
        0.500 1.7604E-08
        0.546 1.2209E-08
        0.580 1.4829E-08
        0.620 1.5852E-08
        0.660 1.6874E-08
        0.700 1.3409E-08
        1.060 3.3758E-09
        1.530 1.1332E-07
        1.970 5.6389E-07
        2.325 4.6291E-06
        2.500 1.3514E-05
SPECS:
    n_is_absolute: false
    λ_is_vacuum: false
    temperature: 20.0 °C
    coefficients_of_thermal_dispersion: 3.34e-06 1.16e-08 -1.8e-11 6.32e-07 7.21e-10 0.206
    n_d: 1.63775
    V_d: 42.41
    glass_code: 638424.320
    glass_status: standard
    density: 3.196 g/cm<sup>3</sup>
    coefficient_of_thermal_expansion_1: 6.56e-06 K<sup>-1</sup>
    coefficient_of_thermal_expansion_2: 7.56e-06 K<sup>-1</sup>
    ΔP_gF: -0.012
    climatic_resistance: 1.0
    stain_resistance: 1.0
    acid_resistance: 3.4
    alkali_resistance: 1.0
    phosphate_resistance: 1.0
