# 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: |
    suitable for precision molding. step 0.5 available        
DATA:
  - type: formula 2
    wavelength_range: 0.26 2.5
    coefficients: 0 0.844309338 0.00475111955 0.344147824 0.0149814849 0.910790213 97.8600293
  - type: tabulated k
    data: |
        0.270 3.3621E-06
        0.280 1.5283E-06
        0.290 6.3984E-07
        0.300 2.6207E-07
        0.310 1.1499E-07
        0.320 5.2247E-08
        0.334 2.4738E-08
        0.350 1.3450E-08
        0.365 9.3320E-09
        0.370 9.4599E-09
        0.380 1.0935E-08
        0.390 7.4709E-09
        0.400 7.6624E-09
        0.405 7.7582E-09
        0.420 9.3912E-09
        0.436 1.1147E-08
        0.460 1.4716E-08
        0.500 1.7604E-08
        0.546 1.5713E-08
        0.580 1.6691E-08
        0.620 1.9835E-08
        0.660 1.8993E-08
        0.700 1.1169E-08
        1.060 6.7549E-09
        1.530 1.7351E-07
        1.970 4.5507E-07
        2.325 3.4194E-06
        2.500 7.6998E-06
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: -7.24e-06 1.58e-08 -9.51e-12 3.51e-07 4.61e-10 0.156
    nd: 1.48749
    Vd: 70.41
    glass_code: 487704.245
    glass_status: standard
    density:
      - value: 2450
    thermal_expansion:
      - temperature_range: 243 343
        value: 9.2e-06
      - temperature_range: 293 573
        value: 1e-05
    dPgF: 0.0036
    resistance:
        climatic: 2.0
        stain: 1.0
        acid: 4.0
        alkali: 2.0
        phosphate: 2.3