# 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="https://refractiveindex.info/download/data/2017/schott_2017-01-20b.agf">SCHOTT Zemax catalog 2017-01-20b</a> (obtained from <a href="https://www.schott.com/en-us/products/optical-glass-p1000267/downloads/">http://www.schott.com</a>)<br>See also <a href="https://refractiveindex.info/download/data/2017/schott_2017-01-20.pdf">SCHOTT glass data sheets</a>
COMMENTS: |
    obsolet 
DATA:
  - type: formula 2
    wavelength_range: 0.25 2.5
    coefficients: 0 0.617617011 0.00275381936 0.421117656 0.0105900875 3.79711183 1182.67444
  - type: tabulated k
    data: |
        0.250 1.5931E-09
        0.260 1.6569E-09
        0.270 1.7206E-09
        0.280 1.7843E-09
        0.290 1.8480E-09
        0.300 1.9118E-09
        0.310 1.9755E-09
        0.320 2.0392E-09
        0.334 2.1284E-09
        0.350 2.2304E-09
        0.365 2.3260E-09
        0.370 2.3579E-09
        0.380 2.4216E-09
        0.390 2.4853E-09
        0.400 2.5490E-09
        0.405 2.5809E-09
        0.420 2.6765E-09
        0.436 2.7784E-09
        0.460 2.9314E-09
        0.500 1.5923E-09
        0.546 1.7388E-09
        0.580 1.8471E-09
        0.620 1.9745E-09
        0.660 2.1019E-09
        0.700 2.2293E-09
        1.060 3.3758E-09
        1.530 4.8726E-09
        1.970 6.2738E-09
        2.325 7.4044E-09
        2.500 7.9617E-09
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: -3.18e-05 -2.31e-08 4.13e-11 3.35e-07 1.91e-10 0.192
    nd: 1.43385
    Vd: 95.23
    glass_code: 434952.318
    glass_status: preferred
    density:
      - value: 3180
    thermal_expansion:
      - temperature_range: 243 343
        value: 1.841e-05
      - temperature_range: 293 573
        value: 2.128e-05
    dPgF: 0.0552
    resistance:
        climatic: 1.0
        stain: 0.0
        acid: 4.5
        alkali: 2.3
        phosphate: 1.3