# 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 
    range: 0.3 2.5
    coefficients: 0 1.3932426 0.00715959695 0.418882766 0.0233637446 1.043807 88.3284426
  - type: tabulated k
    data: |
        0.300 5.0595E-06
        0.310 2.7762E-06
        0.320 1.5897E-06
        0.334 7.8032E-07
        0.350 3.3546E-07
        0.365 1.4852E-07
        0.370 1.1496E-07
        0.380 7.4843E-08
        0.390 5.0677E-08
        0.400 3.8782E-08
        0.405 3.5286E-08
        0.420 3.1108E-08
        0.436 2.8038E-08
        0.460 2.2130E-08
        0.500 1.2784E-08
        0.546 1.0459E-08
        0.580 1.2969E-08
        0.620 1.5852E-08
        0.660 1.6874E-08
        0.700 1.5652E-08
        1.060 3.3758E-09
        1.530 9.3423E-08
        1.970 8.7327E-07
        2.325 5.1298E-06
        2.500 1.2049E-05
SPECS:
    n_is_absolute: false
    λ_is_vacuum: false
    temperature: 20.0 °C
    coefficients_of_thermal_dispersion: -1.9e-06 7.99e-09 7.76e-12 5.64e-07 6.57e-10 0.185
    n_d: 1.6935
    V_d: 53.2
    glass_code: 693532.385
    glass_status: standard
    density: 3.848 g/cm<sup>3</sup>
    coefficient_of_thermal_expansion_1: 8.13e-06 K<sup>-1</sup>
    coefficient_of_thermal_expansion_2: 9.68e-06 K<sup>-1</sup>
    ΔP_gF: -0.0061
    climatic_resistance: 2.0
    stain_resistance: 5.0
    acid_resistance: 53.3
    alkali_resistance: 1.3
    phosphate_resistance: 4.3
