# this file is part of refractiveindex.info database
# refractiveindex.info database is in the public domain
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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 suitable for precision molding        "
DATA:
  - type: formula 2 
    range: 0.39 2.5
    coefficients: 0 1.97464225 0.0145772324 0.467095921 0.0669790359 2.43154209 157.444895
  - type: tabulated k
    data: |
        0.400 4.0984E-06
        0.405 3.2561E-06
        0.420 1.8533E-06
        0.436 1.2039E-06
        0.460 7.7257E-07
        0.500 4.1597E-07
        0.546 2.0253E-07
        0.580 1.3398E-07
        0.620 1.0956E-07
        0.660 1.0334E-07
        0.700 9.5605E-08
        1.060 5.0995E-08
        1.530 7.3606E-08
        1.970 2.5598E-07
        2.325 1.0306E-06
        2.500 1.3875E-06
SPECS:
    n_is_absolute: false
    λ_is_vacuum: false
    temperature: 20.0 °C
    coefficients_of_thermal_dispersion: 4.82e-07 1.15e-08 -9.95e-12 1.15e-06 1.65e-09 0.315
    n_d: 1.9068
    V_d: 21.4
    glass_code: 907214.424
    glass_status: special
    density: 4.236 g/cm<sup>3</sup>
    coefficient_of_thermal_expansion_1: 6.23e-06 K<sup>-1</sup>
    coefficient_of_thermal_expansion_2: 7.39e-06 K<sup>-1</sup>
    ΔP_gF: 0.0256
    climatic_resistance: 1.0
    stain_resistance: 0.0
    acid_resistance: 1.0
    alkali_resistance: 1.3
    phosphate_resistance: 1.0
