# 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: "1) <a href=\"http://refractiveindex.info/download/data/2015/ohara_2015-12-01.pdf\">OHARA optical glass datasheets 2015-12-01</a><br>2) <a href=\"http://refractiveindex.info/download/data/2015/OHARA_151201.agf\">OHARA Zemax catalog 2015-12-01</a>"
COMMENTS: "Low Softening Temperature"
DATA:
  - type: formula 2 
    range: 0.34 2.4
    coefficients: 0 1.83606127 0.00981969903 0.341720032 0.0385636264 1.35280173 107.04553
  - type: tabulated k
    data: |
        0.340 4.3545E-06
        0.350 1.7162E-06
        0.360 7.8620E-07
        0.370 4.1004E-07
        0.380 2.5214E-07
        0.390 1.5919E-07
        0.400 1.1340E-07
        0.420 7.0935E-08
        0.440 5.2919E-08
        0.460 3.6790E-08
        0.480 2.6832E-08
        0.500 1.5947E-08
        0.550 8.7623E-09
        0.600 9.5589E-09
        0.650 1.0355E-08
        0.700 5.5732E-09
        0.800 6.3694E-09
        0.900 7.1656E-09
        1.000 7.9617E-09
        1.200 9.5541E-09
        1.400 2.2304E-08
        1.600 3.8255E-08
        1.800 1.1505E-07
        2.000 4.0295E-07
        2.200 1.0460E-06
        2.400 4.5020E-06
INFO:
    n_is_absolute: false
    λ_is_vacuum: false
    temperature: 25.0 °C
    coefficients_of_thermal_dispersion: 8.14e-06 9.68e-09 -3.1e-12 8.24e-07 8.84e-10 0.23
    n_d: 1.808350
    V_d: 40.548503
    density: 4.62 g/cm<sup>3</sup>
    coefficient_of_thermal_expansion_1: 6e-06 K<sup>-1</sup>
    ΔP_gF: -0.007
    climatic_resistance: 2.0
    acid_resistance: 51.3
    phosphate_resistance: 2.2
