# 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        "
DATA:
  - type: formula 2 
    wavelength_range: 0.29 2.5
    coefficients: 0 1.029607 0.00516800155 0.1880506 0.0166658798 0.736488165 138.964129
  - type: tabulated k
    data: |
        0.290 4.2510E-06
        0.300 3.0738E-06
        0.310 2.0922E-06
        0.320 1.2264E-06
        0.334 4.9122E-07
        0.350 1.4242E-07
        0.365 3.5388E-08
        0.370 2.3794E-08
        0.380 1.3379E-08
        0.390 9.9712E-09
        0.400 1.0227E-08
        0.405 1.0355E-08
        0.420 1.3436E-08
        0.436 1.3948E-08
        0.460 1.1761E-08
        0.500 6.3790E-09
        0.546 5.2218E-09
        0.580 5.5469E-09
        0.620 9.8924E-09
        0.660 1.4758E-08
        0.700 1.5652E-08
        1.060 2.0305E-08
        1.530 2.9309E-08
        1.970 6.3023E-08
        2.325 1.6463E-07
        2.500 2.6704E-07
SPECS:
    n_absolute: false
    wavelength_vacuum: false
    temperature: 20.0 °C
    thermal_dispersion:
      - type: "Schott formula"
        coefficients: -1.97e-05 -5.5e-09 5.28e-12 3.6e-07 2.45e-10 0.172
    nd: 1.497
    Vd: 81.61
    glass_code: 497816.370
    glass_status: standard
    density: 3.7 g/cm<sup>3</sup>
    thermal_expansion:
      - temperature_range: -30 70 °C
        coefficient: 1.301e-05 K<sup>-1</sup>
      - temperature_range: 20 300 °C
        coefficient: 1.5e-05 K<sup>-1</sup>
    dPgF: 0.0311
    climatic_resistance: 1.0
    stain_resistance: 0.0
    acid_resistance: 52.3
    alkali_resistance: 3.3
    phosphate_resistance: 4.3
