# 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: 0.3 2.5
    coefficients: 0 1.15610775 0.00585597402 0.153229344 0.0194072416 0.785618966 140.537046
  - type: tabulated k
    data: |
        0.300 3.7357E-06
        0.310 2.2721E-06
        0.320 1.2966E-06
        0.334 5.4309E-07
        0.350 1.9424E-07
        0.365 7.1889E-08
        0.370 5.4228E-08
        0.380 3.3108E-08
        0.390 2.0023E-08
        0.400 1.7951E-08
        0.405 1.8176E-08
        0.420 2.1563E-08
        0.436 2.2385E-08
        0.460 1.7677E-08
        0.500 1.1180E-08
        0.546 6.9658E-09
        0.580 9.2541E-09
        0.620 1.5852E-08
        0.660 1.8993E-08
        0.700 1.7897E-08
        1.060 2.0305E-08
        1.530 7.3606E-08
        1.970 3.8800E-07
        2.325 1.1162E-06
        2.500 1.6769E-06
SPECS:
    n_is_absolute: false
    λ_is_vacuum: false
    temperature: 20.0 °C
    coefficients_of_thermal_dispersion: -1.98e-05 -6.06e-09 1.6e-11 4.16e-07 5.01e-10 0.134
    n_d: 1.52855
    V_d: 76.98
    glass_code: 529770.386
    glass_status: standard
    density: 3.855 g/cm<sup>3</sup>
    coefficient_of_thermal_expansion_1: 1.235e-05 K<sup>-1</sup>
    coefficient_of_thermal_expansion_2: 1.412e-05 K<sup>-1</sup>
    ΔP_gF: 0.0258
    climatic_resistance: 1.0
    stain_resistance: 0.0
    acid_resistance: 52.3
    alkali_resistance: 3.3
    phosphate_resistance: 4.3
