# 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: 0.31 2.5
    coefficients: 0 1.23697554 0.00747170505 0.153569376 0.0308053556 0.903976272 70.1731084
  - type: tabulated k
    data: |
        0.310 3.4601E-06
        0.320 1.4536E-06
        0.334 5.6096E-07
        0.350 2.4860E-07
        0.365 1.3539E-07
        0.370 1.1107E-07
        0.380 8.7780E-08
        0.390 6.3676E-08
        0.400 4.8004E-08
        0.405 4.3260E-08
        0.420 3.3847E-08
        0.436 2.6623E-08
        0.460 1.9160E-08
        0.500 1.2784E-08
        0.546 1.0459E-08
        0.580 1.1111E-08
        0.620 1.1877E-08
        0.660 1.2643E-08
        0.700 8.9305E-09
        1.060 3.0504E-08
        1.530 3.0134E-07
        1.970 1.3993E-06
        2.325 9.9693E-06
        2.500 2.5615E-05
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 6.77e-06 1.31e-08 -1.23e-11 3.84e-07 5.51e-10 0.196
    nd: 1.55836
    Vd: 54.01
    glass_code: 558540.255
    glass_status: standard
    density:
      - value: 2540
    thermal_expansion:
      - temperature_range: 243 343
        value: 4.44e-06
      - temperature_range: 293 573
        value: 5.4e-06
    dPgF: -0.0111
    resistance:
        climatic: 1.0
        stain: 4.0
        acid: 52.3
        alkali: 4.3
        phosphate: 4.2