Optical constants

Refractive index of C₈H₁₈ (Octane)

Anderson 2000: iso-Octane; n,k 2–23 µm

Data: tabulated nk
Range: 2.006–23 µm
Points: 962
Licence: CC0-1.0

Axis Log x Log y

Click the plot to set the calculator wavelength.

At one wavelength

Refractive index n: 1.34963
Extinction coefficient k: 0.0463466

Permittivity ε₁: 1.81934
Permittivity ε₂: 0.125101

Absorption coefficient α: 857.744 cm⁻¹
Penetration depth δ = λ/(2πk): 23317 nm

Abbe number V_d: —
Chromatic dispersion dn/dλ: 0.4375 µm⁻¹

Group index n_g: -1.621
Group velocity dispersion: — fs²/mm

Dispersion parameter D: — ps/(nm·km)
Photon energy: 0.182598 eV

ε = (n + ik)², α = 4πk/λ, n_g = n − λ dn/dλ, GVD = λ³/(2πc²) d²n/dλ², D = −(λ/c) d²n/dλ². Group-velocity dispersion is given for formula data only.

Use it in Lightsmith

Load this data in Python, simulate in one more line

pip install lightsmith

import lightsmith as ls

# C8H18 (Octane): Anderson 2000: iso-Octane; n,k 2–23 µm
c8h18 = ls.fetch_refractiveindex("organic", "octane", "Anderson", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(c8h18.range_nm)  # (2006, 23000) nm
eps = c8h18.eps([6790])  # complex permittivity

Downloads the original record once (pinned to the imported snapshot) and caches it.

import json, urllib.request
import lightsmith as ls

url = "https://materials.lightsmith.dev/v1/datasets/ds_d811a1a30a6e/lightsmith"
c8h18 = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(c8h18.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (octane/anderson-2000).

# ... load c8h18 as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=c8h18)],
    medium_index=1.0,
    wavelengths=ls.WavelengthRange(start_nm=2006, stop_nm=23000, num=81),
)
res = ls.solve(sim)  # exact Mie for a sphere
print(res.q_ext)     # extinction efficiency at each wavelength

Same spec runs with DDA, FDTD, BEM or T-matrix: ls.compare(sim, ["mie", "dda"]).

Materials guide Open a sphere of it in Studio Quick start Ask the community

Lightsmith is open source (MIT): Mie, T-matrix, BEM, DDA, FDTD, RCWA, TMM, mode solvers and inverse design behind one spec, on CPU or GPU. GitHub.

Comments and conditions

Iso-octane

References

M. R. Anderson. Determination of infrared optical constatns for single components hydrocarbon fuels, Master Thesis (2009) [pdf]

Cite

M. R. Anderson. Determination of infrared optical constatns for single components hydrocarbon fuels, Master Thesis (2009) [pdf]; Data from the refractiveindex.info database (M. N. Polyanskiy, Sci. Data 11, 94 (2024), doi:10.1038/s41597-023-02898-2)

Data

962 rows as published

CSV comma separated TXT tab separated YAML n, k Full database record original YAML All quantities CSV JSON metadata

C8H18 (Octane), Anderson 2000: iso-Octane; n,k 2–23 µm: n and k versus wavelength
λ (µm)	n	k
2.006	1.38	2.8e-05
2.011	1.38	2.81e-05
2.017	1.38	2.82e-05
2.023	1.38	2.83e-05
2.029	1.38	2.83e-05
2.034	1.38	2.84e-05
2.04	1.38	2.92e-05
2.046	1.38	2.93e-05
2.052	1.38	2.94e-05
2.057	1.38	2.95e-05
2.063	1.38	3.03e-05
2.069	1.379	3.04e-05
2.075	1.379	3.05e-05
2.08	1.379	3.13e-05
2.086	1.379	3.14e-05
2.092	1.379	3.22e-05
2.098	1.379	3.31e-05
2.103	1.379	3.32e-05
2.109	1.379	3.4e-05
2.115	1.379	3.41e-05
2.121	1.379	3.5e-05
2.126	1.379	3.51e-05
2.132	1.379	3.52e-05
2.138	1.379	3.68e-05
2.144	1.379	3.77e-05
2.149	1.379	3.94e-05
2.155	1.379	4.03e-05
2.161	1.379	4.12e-05
2.167	1.379	4.37e-05
2.172	1.379	4.47e-05
2.178	1.379	4.72e-05
2.184	1.379	4.82e-05
2.19	1.379	5e-05
2.195	1.379	5.35e-05
2.201	1.379	5.46e-05
2.207	1.379	5.56e-05
2.213	1.379	5.67e-05
2.218	1.379	5.86e-05
2.224	1.379	6.24e-05
2.23	1.379	7.79e-05
2.236	1.379	0.0001097
2.241	1.379	0.0001504
2.247	1.379	0.000166
2.253	1.379	0.0002275
2.259	1.378	0.0002434
2.264	1.378	0.0003146
2.27	1.378	0.0003714
2.276	1.378	0.0004841
2.282	1.378	0.000541
2.287	1.378	0.0005687
2.293	1.378	0.0005996
2.299	1.378	0.0006259
2.305	1.378	0.0006363
2.31	1.378	0.0007228
2.316	1.379	0.0007975
2.322	1.379	0.0007677
2.328	1.379	0.0007413
2.333	1.379	0.0007057
2.339	1.379	0.0006748
2.345	1.379	0.0006567
2.351	1.379	0.000649
2.356	1.379	0.0006415
2.362	1.379	0.0006259
2.368	1.379	0.0006192
2.374	1.379	0.0005974
2.379	1.379	0.0005775
2.385	1.379	0.0005789
2.391	1.379	0.0005944
2.397	1.379	0.0006267
2.402	1.379	0.0006451
2.408	1.379	0.0006556
2.414	1.379	0.0006482
2.42	1.379	0.0006167
2.425	1.379	0.0005957
2.431	1.379	0.0005572
2.437	1.379	0.0005405
2.443	1.379	0.0005249
2.448	1.379	0.0005155
2.454	1.378	0.0005013
2.46	1.378	0.0004927
2.466	1.378	0.0004891
2.471	1.378	0.0004856
2.477	1.378	0.0004775
2.483	1.378	0.0004026
2.489	1.378	0.0003575
2.494	1.378	0.0003061
2.5	1.378	0.0002828
2.506	1.378	0.0002678
2.512	1.378	0.0002599
2.517	1.378	0.0002584
2.523	1.378	0.0002569
2.529	1.378	0.0002554
2.535	1.378	0.0002519
2.541	1.378	0.0002444
2.547	1.378	0.000251
2.552	1.378	0.0002598
2.558	1.378	0.0002734
2.56	1.378	0.0003675
2.564	1.378	0.0002924
2.568	1.378	0.0003768
2.57	1.378	0.0003028
2.576	1.378	0.0003392
2.584	1.378	0.000405
2.592	1.378	0.0003756
2.6	1.378	0.000371
2.608	1.378	0.0003655
2.616	1.378	0.0003623
2.624	1.378	0.0003543
2.632	1.378	0.0003418
2.64	1.377	0.0003286
2.648	1.377	0.0003091
2.656	1.377	0.000288
2.664	1.377	0.00028
2.672	1.377	0.0002355
2.68	1.377	0.0002112
2.688	1.377	0.0001888
2.696	1.377	0.0001691
2.704	1.377	0.0001513
2.712	1.377	0.000139
2.72	1.377	0.0001236
2.728	1.377	0.0001107
2.736	1.377	9.87e-05
2.744	1.377	8.67e-05
2.752	1.377	7.51e-05
2.76	1.376	6.58e-05
2.768	1.376	5.93e-05
2.776	1.376	5.22e-05
2.784	1.376	4.7e-05
2.792	1.376	4.37e-05
2.8	1.376	4.17e-05
2.808	1.376	3.94e-05
2.816	1.376	4.11e-05
2.824	1.376	4.14e-05
2.832	1.376	4.37e-05
2.84	1.375	4.7e-05
2.848	1.375	5.54e-05
2.856	1.375	6.38e-05
2.864	1.375	7.48e-05
2.872	1.375	8.88e-05
2.88	1.375	0.0001049
2.888	1.375	0.0001202
2.896	1.375	0.000139
2.904	1.375	0.0001548
2.912	1.374	0.0001734
2.92	1.374	0.0001936
2.928	1.374	0.0002212
2.936	1.374	0.0002533
2.944	1.374	0.0002885
2.952	1.374	0.0003297
2.96	1.374	0.000366
2.968	1.373	0.0004009
2.976	1.373	0.000429
2.984	1.373	0.00045
2.992	1.373	0.0004653
3.0	1.373	0.0004758
3.008	1.373	0.0004826
3.016	1.373	0.0004879
3.024	1.372	0.0004974
3.032	1.372	0.0005059
3.04	1.372	0.000517
3.048	1.372	0.0005345
3.056	1.372	0.0005564
3.064	1.371	0.0005872
3.072	1.371	0.0006331
3.08	1.371	0.0006907
3.088	1.371	0.0007692
3.096	1.371	0.0008662
3.104	1.37	0.0005929
3.112	1.37	0.0006926
3.12	1.37	0.0007785
3.128	1.369	0.0008301
3.136	1.369	0.0008797
3.144	1.369	0.0009094
3.152	1.369	0.0009217
3.16	1.368	0.0008988
3.168	1.368	0.0008558
3.176	1.367	0.0008255
3.184	1.367	0.0007716
3.192	1.366	0.0006972
3.2	1.366	0.0006324
3.208	1.365	0.0005862
3.216	1.365	0.0005561
3.224	1.364	0.0005144
3.232	1.363	0.0004977
3.24	1.362	0.000498
3.248	1.361	0.0005195
3.256	1.36	0.0005476
3.264	1.359	0.0005859
3.272	1.357	0.0006631
3.28	1.355	0.0007547
3.288	1.354	0.0008828
3.296	1.351	0.0010558
3.304	1.348	0.0013042
3.312	1.345	0.0016025
3.32	1.337	0.0019949
3.328	1.334	0.0146084
3.336	1.337	0.0166214
3.344	1.335	0.0196603
3.352	1.333	0.0241032
3.36	1.331	0.0296522
3.368	1.33	0.0360273
3.376	1.329	0.0443424
3.384	1.33	0.0555481
3.392	1.336	0.0694509
3.4	1.352	0.08191
3.408	1.369	0.0817937
3.416	1.379	0.0752494
3.424	1.384	0.0721545
3.432	1.389	0.0688122
3.44	1.393	0.06621
3.448	1.396	0.0633233
3.456	1.398	0.0626709
3.464	1.402	0.061504
3.472	1.407	0.0617022
3.48	1.414	0.0593609
3.488	1.418	0.0527348
3.496	1.42	0.0475135
3.504	1.422	0.0427346
3.512	1.423	0.0377071
3.52	1.423	0.0328769
3.528	1.422	0.0283894
3.536	1.42	0.025037
3.544	1.419	0.0221011
3.552	1.418	0.019884
3.56	1.416	0.017967
3.568	1.415	0.0166773
3.576	1.415	0.0156539
3.584	1.415	0.0152017
3.592	1.419	0.0148163
3.6	1.417	0.0027703
3.608	1.411	0.0026669
3.616	1.408	0.0026244
3.624	1.406	0.0024991
3.632	1.404	0.0026751
3.64	1.403	0.0023848
3.648	1.402	0.0025387
3.656	1.401	0.0028534
3.664	1.4	0.002492
3.672	1.4	0.002911
3.68	1.399	0.002663
3.688	1.399	0.0026201
3.696	1.398	0.0026494
3.704	1.398	0.002228
3.712	1.397	0.0021615
3.72	1.397	0.001906
3.728	1.396	0.0017331
3.736	1.396	0.0015925
3.744	1.396	0.0014445
3.752	1.395	0.0013488
3.76	1.395	0.0012581
3.768	1.394	0.0012206
3.776	1.394	0.001192
3.784	1.394	0.0011802
3.792	1.393	0.0011908
3.8	1.393	0.0011901
3.808	1.393	0.0011915
3.816	1.393	0.0011956
3.824	1.392	0.0011717
3.832	1.392	0.0011534
3.84	1.392	0.001124
3.848	1.392	0.001097
3.856	1.392	0.0010777
3.864	1.391	0.0010408
3.872	1.391	0.0010153
3.88	1.391	0.0009606
3.888	1.391	0.0009151
3.896	1.391	0.0008396
3.904	1.391	0.000757
3.912	1.39	0.0006833
3.92	1.39	0.0006022
3.928	1.39	0.0005339
3.936	1.39	0.0004731
3.944	1.39	0.0004359
3.952	1.39	0.0003775
3.96	1.389	0.000345
3.968	1.389	0.000323
3.976	1.389	0.0003133
3.984	1.389	0.0003093
3.992	1.389	0.000318
4.0	1.389	0.0003298
4.008	1.388	0.0003471
4.016	1.388	0.0003661
4.024	1.388	0.0003876
4.032	1.388	0.0004038
4.04	1.388	0.0004246
4.048	1.388	0.0004341
4.056	1.388	0.0004427
4.064	1.388	0.0004413
4.072	1.388	0.0004328
4.08	1.388	0.0004198
4.088	1.388	0.0003993
4.096	1.387	0.0003812
4.104	1.387	0.0003635
4.112	1.387	0.0003576
4.12	1.387	0.0003611
4.128	1.387	0.0003806
4.136	1.387	0.0004082
4.144	1.387	0.000448
4.152	1.387	0.0004889
4.16	1.387	0.000528
4.168	1.387	0.0005548
4.176	1.387	0.0005721
4.184	1.387	0.0005715
4.192	1.387	0.0005713
4.2	1.387	0.0005647
4.208	1.386	0.0005535
4.216	1.386	0.0005334
4.224	1.386	0.000508
4.232	1.386	0.0004781
4.24	1.386	0.0004344
4.248	1.386	0.000395
4.256	1.386	0.0003539
4.264	1.386	0.00033
4.272	1.386	0.0003144
4.28	1.386	0.0003056
4.288	1.386	0.0002956
4.296	1.386	0.0002923
4.304	1.386	0.0002967
4.312	1.386	0.0003003
4.32	1.386	0.0003109
4.328	1.386	0.0003212
4.336	1.385	0.0003455
4.344	1.385	0.0003785
4.352	1.385	0.0004159
4.36	1.385	0.000454
4.368	1.385	0.0004843
4.376	1.385	0.0005111
4.384	1.385	0.0005153
4.392	1.385	0.000508
4.4	1.385	0.0004808
4.408	1.385	0.0004482
4.416	1.385	0.0004119
4.424	1.385	0.0003814
4.432	1.385	0.0003486
4.44	1.385	0.0003212
4.448	1.385	0.000289
4.456	1.385	0.0002694
4.464	1.385	0.0002475
4.472	1.385	0.0002306
4.48	1.385	0.0002249
4.488	1.385	0.00022
4.496	1.385	0.0002315
4.504	1.385	0.0002426
4.512	1.385	0.0002619
4.52	1.385	0.0002823
4.528	1.385	0.0003016
4.536	1.385	0.0003207
4.544	1.384	0.0003329
4.552	1.384	0.000338
4.56	1.384	0.0003334
4.568	1.384	0.000325
4.576	1.384	0.0003076
4.584	1.384	0.0002952
4.592	1.384	0.0002759
4.6	1.384	0.0002608
4.608	1.384	0.0002455
4.616	1.384	0.0002334
4.624	1.384	0.0002217
4.632	1.384	0.0002128
4.64	1.384	0.0002007
4.648	1.384	0.0001968
4.656	1.384	0.0001874
4.664	1.384	0.0001834
4.672	1.384	0.0001849
4.68	1.384	0.0001863
4.688	1.384	0.0001949
4.696	1.384	0.0002008
4.704	1.384	0.0002103
4.712	1.384	0.0002259
4.72	1.384	0.0002401
4.728	1.384	0.0002616
4.736	1.384	0.0002835
4.744	1.384	0.0002994
4.752	1.384	0.0003115
4.76	1.384	0.0003105
4.768	1.384	0.0002966
4.776	1.384	0.0002741
4.784	1.384	0.0002435
4.792	1.384	0.0002146
4.8	1.384	0.0001805
4.808	1.384	0.0001545
4.816	1.383	0.000141
4.824	1.383	0.0001241
4.832	1.383	0.0001161
4.84	1.383	0.0001077
4.848	1.383	0.0001055
4.856	1.383	0.0001057
4.864	1.383	0.0001057
4.872	1.383	0.0001064
4.88	1.383	0.0001143
4.888	1.383	0.0001243
4.896	1.383	0.0001374
4.904	1.383	0.0001553
4.912	1.383	0.0001768
4.92	1.383	0.0001991
4.928	1.383	0.0002183
4.936	1.383	0.000235
4.944	1.383	0.0002353
4.952	1.383	0.0002293
4.96	1.383	0.0002184
4.968	1.383	0.0001967
4.976	1.383	0.0001831
4.984	1.383	0.0001688
4.992	1.383	0.0001623
5.0	1.383	0.0001676
5.008	1.383	0.0001681
5.016	1.383	0.0001849
5.024	1.383	0.000199
5.032	1.383	0.0002096
5.04	1.383	0.0002081
5.048	1.383	0.0002068
5.056	1.383	0.0001943
5.064	1.382	0.000183
5.072	1.382	0.0001736
5.08	1.382	0.0001647
5.088	1.382	0.0001683
5.096	1.382	0.0001755
5.104	1.382	0.0001927
5.112	1.382	0.0002106
5.12	1.382	0.0002257
5.128	1.382	0.0002408
5.136	1.382	0.0002462
5.144	1.382	0.0002473
5.152	1.382	0.0002422
5.16	1.382	0.0002305
5.168	1.382	0.0002142
5.176	1.382	0.0001985
5.184	1.382	0.0001863
5.192	1.382	0.0001722
5.2	1.382	0.000171
5.208	1.382	0.0001622
5.216	1.382	0.0001671
5.224	1.382	0.0001674
5.232	1.382	0.0001792
5.24	1.382	0.0001856
5.248	1.382	0.0001949
5.256	1.382	0.0002046
5.264	1.382	0.0002216
5.272	1.382	0.000229
5.28	1.382	0.0002411
5.288	1.382	0.0002492
5.296	1.382	0.0002608
5.304	1.382	0.0002665
5.312	1.382	0.000273
5.32	1.381	0.0002745
5.328	1.381	0.000279
5.336	1.381	0.0002815
5.344	1.381	0.0002872
5.352	1.381	0.0002829
5.36	1.381	0.0002875
5.368	1.381	0.0002841
5.376	1.381	0.0002985
5.384	1.381	0.0002997
5.392	1.381	0.0003193
5.4	1.381	0.0003236
5.408	1.381	0.0003366
5.424	1.381	0.0003465
5.44	1.381	0.0003422
5.456	1.381	0.0003437
5.472	1.381	0.0002974
5.488	1.381	0.0002917
5.504	1.381	0.0002787
5.52	1.381	0.000292
5.536	1.381	0.0003156
5.552	1.381	0.0003327
5.568	1.381	0.00036
5.584	1.38	0.0003494
5.6	1.38	0.0003301
5.616	1.38	0.000321
5.632	1.38	0.0003105
5.648	1.38	0.0003258
5.68	1.38	0.0003794
5.696	1.38	0.0003911
5.712	1.38	0.0004435
5.728	1.38	0.0004691
5.744	1.38	0.0005115
5.76	1.379	0.0005471
5.776	1.379	0.0006172
5.792	1.379	0.0006404
5.808	1.379	0.0007047
5.84	1.379	0.0007675
5.856	1.379	0.0008008
5.872	1.379	0.0008363
5.904	1.379	0.0008249
5.92	1.379	0.0008248
5.952	1.379	0.0008289
5.968	1.379	0.0008185
6.0	1.379	0.0008144
6.032	1.378	0.0007877
6.048	1.378	0.0007891
6.064	1.378	0.000729
6.08	1.378	0.0006971
6.096	1.378	0.0006865
6.112	1.378	0.0006328
6.128	1.378	0.0006235
6.144	1.377	0.0005862
6.16	1.377	0.000568
6.192	1.377	0.0005597
6.224	1.376	0.0005746
6.256	1.376	0.0005967
6.288	1.375	0.0006176
6.304	1.375	0.0006503
6.32	1.375	0.0006785
6.336	1.375	0.0007068
6.352	1.374	0.0007352
6.368	1.374	0.0007638
6.384	1.374	0.0007925
6.4	1.373	0.0008213
6.416	1.373	0.0008503
6.432	1.373	0.0008794
6.448	1.372	0.0009086
6.464	1.372	0.000938
6.48	1.371	0.0009675
6.496	1.371	0.0009971
6.512	1.37	0.0010269
6.528	1.37	0.0010568
6.544	1.369	0.0010868
6.56	1.368	0.0010701
6.576	1.367	0.0012691
6.592	1.366	0.001507
6.608	1.364	0.0022076
6.624	1.363	0.0029121
6.64	1.362	0.0032314
6.656	1.361	0.003511
6.672	1.359	0.0035484
6.688	1.356	0.0041391
6.704	1.351	0.0047741
6.72	1.346	0.0110647
6.736	1.344	0.016835
6.752	1.343	0.0252988
6.768	1.344	0.033526
6.784	1.347	0.0421735
6.8	1.354	0.0533017
6.816	1.367	0.0609647
6.832	1.382	0.0611223
6.848	1.395	0.0545087
6.864	1.4	0.042958
6.88	1.4	0.0361718
6.896	1.4	0.0309868
6.912	1.399	0.0266572
6.928	1.399	0.0238135
6.944	1.398	0.0209096
6.96	1.396	0.0186207
6.976	1.395	0.0171433
6.992	1.394	0.0160397
7.008	1.393	0.014594
7.024	1.393	0.014291
7.04	1.392	0.0123252
7.056	1.39	0.0121952
7.072	1.389	0.0110262
7.088	1.388	0.0111827
7.104	1.387	0.0109954
7.12	1.385	0.0107545
7.136	1.384	0.0114019
7.152	1.382	0.0114428
7.168	1.379	0.0139717
7.184	1.379	0.0177505
7.2	1.381	0.0217873
7.216	1.384	0.0229446
7.232	1.387	0.0220275
7.248	1.388	0.0188976
7.264	1.387	0.0172729
7.28	1.384	0.0165346
7.296	1.379	0.0184399
7.312	1.375	0.0260303
7.328	1.378	0.0397341
7.344	1.393	0.0493832
7.36	1.41	0.0432428
7.376	1.417	0.0291954
7.392	1.414	0.0200875
7.408	1.412	0.0176247
7.424	1.412	0.0127984
7.44	1.41	0.0092282
7.456	1.407	0.0062688
7.472	1.405	0.0047363
7.488	1.402	0.0042966
7.52	1.4	0.0039765
7.536	1.399	0.0037566
7.552	1.398	0.003517
7.568	1.398	0.0031902
7.584	1.397	0.0025988
7.6	1.396	0.0022691
7.616	1.396	0.001701
7.632	1.395	0.0010999
7.648	1.394	0.0009533
7.664	1.392	0.0010951
7.68	1.391	0.0016373
7.696	1.391	0.0021757
7.712	1.39	0.0026384
7.728	1.39	0.0032569
7.744	1.39	0.0034167
7.76	1.39	0.0037029
7.776	1.39	0.0041367
7.792	1.39	0.004285
7.808	1.391	0.0044449
7.824	1.391	0.0044257
7.84	1.391	0.0035029
7.856	1.391	0.0028792
7.872	1.39	0.0023084
7.888	1.389	0.0019817
7.904	1.388	0.0021702
7.92	1.388	0.0024584
7.936	1.387	0.0027844
7.952	1.386	0.0034809
7.968	1.386	0.0039754
7.984	1.385	0.0048361
8.0	1.385	0.0062615
8.016	1.385	0.0080832
8.032	1.387	0.0116115
8.048	1.391	0.011669
8.064	1.393	0.0093023
8.08	1.393	0.0061209
8.096	1.392	0.0047362
8.112	1.391	0.0038241
8.144	1.39	0.0035957
8.16	1.389	0.0035514
8.176	1.389	0.0035758
8.192	1.388	0.0033485
8.208	1.388	0.0033087
8.224	1.387	0.003383
8.24	1.385	0.0038137
8.256	1.384	0.0050504
8.272	1.383	0.0073015
8.288	1.383	0.0096383
8.304	1.385	0.0128873
8.32	1.389	0.0141383
8.336	1.392	0.0137352
8.352	1.394	0.0124237
8.368	1.395	0.0097492
8.384	1.396	0.0083357
8.4	1.396	0.0064376
8.416	1.395	0.005126
8.432	1.394	0.0042108
8.448	1.394	0.0032518
8.464	1.393	0.0027237
8.48	1.392	0.0022727
8.496	1.391	0.0020914
8.512	1.389	0.0024431
8.528	1.388	0.0030829
8.544	1.387	0.0051742
8.56	1.387	0.0075152
8.576	1.389	0.0106307
8.592	1.393	0.0099976
8.608	1.395	0.0087332
8.624	1.396	0.0062372
8.64	1.395	0.0050028
8.656	1.395	0.0038947
8.672	1.395	0.0028644
8.688	1.394	0.0020705
8.704	1.393	0.0017103
8.72	1.393	0.0015517
8.736	1.392	0.0014328
8.752	1.392	0.0013169
8.768	1.392	0.001253
8.784	1.392	0.0011899
8.8	1.391	0.0011597
8.816	1.391	0.0011296
8.832	1.391	0.0011317
8.848	1.391	0.0011177
8.864	1.39	0.0011197
8.88	1.39	0.0011378
8.896	1.39	0.0011887
8.912	1.39	0.0012072
8.928	1.39	0.0012592
8.944	1.39	0.0013118
8.96	1.39	0.0013825
8.976	1.389	0.0014196
8.992	1.389	0.0014924
9.008	1.389	0.0015039
9.024	1.389	0.0015428
9.04	1.389	0.0015823
9.056	1.389	0.0016596
9.072	1.389	0.0018353
9.104	1.389	0.0019212
9.136	1.389	0.0020124
9.152	1.39	0.0021383
9.168	1.39	0.0018391
9.184	1.39	0.0015517
9.2	1.39	0.0011782
9.216	1.39	0.0006734
9.232	1.389	0.0010014
9.248	1.389	0.0009187
9.264	1.389	0.0008584
9.28	1.389	0.0007506
9.296	1.389	0.0007679
9.312	1.389	0.000639
9.328	1.389	0.0006258
9.344	1.389	0.0005857
9.376	1.388	0.0005454
9.408	1.388	0.0005368
9.424	1.388	0.0005307
9.44	1.388	0.0005134
9.472	1.388	0.0005047
9.504	1.388	0.0004908
9.536	1.388	0.0004776
9.552	1.387	0.0005693
9.568	1.387	0.000544
9.584	1.387	0.0005779
9.6	1.387	0.0005819
9.616	1.387	0.0006608
9.632	1.387	0.000622
9.648	1.387	0.000719
9.664	1.387	0.0006897
9.68	1.387	0.0007216
9.696	1.387	0.0007439
9.712	1.387	0.0007477
9.728	1.386	0.0008344
9.744	1.386	0.0008355
9.76	1.386	0.0010046
9.776	1.386	0.0009901
9.792	1.386	0.0012112
9.808	1.386	0.0012638
9.824	1.386	0.0014537
9.84	1.386	0.0016184
9.856	1.386	0.0015182
9.872	1.386	0.0015598
9.888	1.386	0.0014579
9.904	1.386	0.001314
9.92	1.386	0.0013348
9.952	1.386	0.0012055
9.968	1.386	0.0011754
9.984	1.385	0.0011642
10.0	1.385	0.0013128
10.032	1.384	0.0019342
10.048	1.384	0.0025668
10.064	1.384	0.0030514
10.08	1.384	0.0035305
10.096	1.385	0.0040379
10.112	1.385	0.0041771
10.144	1.385	0.0042329
10.176	1.386	0.0043654
10.192	1.386	0.0048525
10.224	1.386	0.0049505
10.272	1.387	0.0050955
10.304	1.386	0.0056818
10.32	1.389	0.0091969
10.336	1.392	0.0049645
10.352	1.391	0.0029692
10.368	1.39	0.0031713
10.384	1.39	0.0025054
10.4	1.389	0.0023559
10.416	1.389	0.0021792
10.432	1.388	0.0021542
10.464	1.388	0.0021211
10.48	1.388	0.0020676
10.496	1.388	0.0020874
10.512	1.388	0.0020553
10.544	1.387	0.0020345
10.56	1.387	0.0019819
10.576	1.387	0.0019676
10.592	1.387	0.0020379
10.608	1.387	0.0019867
10.624	1.387	0.0020773
10.64	1.387	0.0021582
10.656	1.386	0.0022251
10.672	1.386	0.0023692
10.688	1.386	0.0026245
10.704	1.386	0.0027508
10.72	1.385	0.003078
10.736	1.385	0.0035195
10.752	1.385	0.0036854
10.768	1.385	0.0050134
10.784	1.386	0.0058269
10.8	1.386	0.0056018
10.816	1.386	0.0061011
10.832	1.387	0.0078318
10.848	1.389	0.0072862
10.864	1.39	0.0057874
10.88	1.389	0.0059439
10.912	1.391	0.0059128
10.928	1.391	0.0042026
10.944	1.391	0.0039736
10.96	1.391	0.0034843
10.976	1.391	0.0030079
10.992	1.391	0.0028094
11.008	1.391	0.002403
11.024	1.39	0.0022885
11.04	1.39	0.0021718
11.056	1.39	0.0019815
11.072	1.39	0.0019704
11.088	1.39	0.0019001
11.104	1.39	0.0017869
11.12	1.39	0.0017691
11.136	1.39	0.0016334
11.152	1.39	0.0015415
11.168	1.389	0.0013807
11.184	1.389	0.0013133
11.2	1.389	0.0012336
11.216	1.389	0.0010948
11.232	1.389	0.001065
11.248	1.389	0.0009803
11.264	1.389	0.0009344
11.28	1.389	0.0009116
11.296	1.389	0.0008315
11.312	1.388	0.0008875
11.328	1.388	0.0008063
11.344	1.388	0.0008318
11.36	1.388	0.0008611
11.376	1.388	0.0008681
11.392	1.388	0.0008822
11.408	1.388	0.0009695
11.424	1.388	0.0009696
11.44	1.388	0.0010591
11.456	1.388	0.0011193
11.472	1.387	0.0011776
11.488	1.387	0.001329
11.504	1.387	0.0013915
11.52	1.387	0.0015131
11.536	1.387	0.0017206
11.552	1.387	0.0018034
11.568	1.387	0.0020803
11.584	1.388	0.0021038
11.616	1.388	0.0022636
11.632	1.388	0.0023778
11.648	1.388	0.0021954
11.664	1.388	0.0021096
11.68	1.388	0.001976
11.696	1.388	0.0017981
11.712	1.388	0.001715
11.728	1.388	0.0014772
11.744	1.388	0.0014553
11.76	1.388	0.0012813
11.776	1.388	0.0012213
11.792	1.388	0.0011373
11.808	1.388	0.0011125
11.824	1.388	0.0010764
11.84	1.388	0.0010568
11.856	1.388	0.0010241
11.872	1.388	0.0010656
11.888	1.387	0.0010869
11.92	1.387	0.0012234
11.936	1.387	0.0012879
11.952	1.387	0.0014156
11.968	1.387	0.0014864
11.984	1.387	0.0017432
12.0	1.387	0.0017957
12.016	1.387	0.0021507
12.032	1.387	0.0022123
12.048	1.387	0.0025442
12.064	1.387	0.0026717
12.08	1.387	0.0028265
12.096	1.388	0.0032571
12.112	1.388	0.0032662
12.128	1.388	0.002957
12.176	1.389	0.0029732
12.192	1.389	0.0025903
12.208	1.389	0.0027545
12.224	1.389	0.0025488
12.24	1.389	0.0021314
12.256	1.389	0.0021383
12.272	1.389	0.0019496
12.288	1.389	0.001701
12.304	1.389	0.0016648
12.32	1.39	0.0013891
12.336	1.389	0.0012767
12.352	1.389	0.0011499
12.368	1.389	0.0009766
12.384	1.389	0.0008751
12.4	1.389	0.0007056
12.416	1.389	0.0007085
12.432	1.389	0.000581
12.448	1.389	0.0004832
12.464	1.389	0.000488
12.496	1.389	0.0003816
12.528	1.389	0.0002849
12.56	1.388	0.0002639
12.608	1.388	0.0002592
12.64	1.388	0.0002125
12.672	1.388	0.0002047
12.704	1.388	0.0001964
12.736	1.388	0.0001361
12.88	1.388	0.0001306
12.912	1.388	0.0001396
12.96	1.388	0.0001297
12.976	1.388	0.0001249
13.008	1.387	0.0001187
13.056	1.387	0.0001105
13.088	1.387	0.0001159
13.184	1.387	0.0001123
13.2	1.387	0.0001315
13.216	1.387	0.0001544
13.248	1.387	0.0001748
13.264	1.387	0.0002239
13.28	1.387	0.0002601
13.296	1.387	0.0003236
13.312	1.387	0.0003578
13.328	1.387	0.0004614
13.344	1.386	0.0005314
13.36	1.386	0.0007491
13.376	1.386	0.0008796
13.392	1.386	0.001151
13.408	1.386	0.0013022
13.424	1.387	0.0016866
13.44	1.387	0.0018392
13.472	1.388	0.00192
13.488	1.388	0.0014531
13.504	1.388	0.0014086
13.52	1.388	0.0010401
13.536	1.388	0.0008254
13.552	1.388	0.0007577
13.568	1.388	0.0004911
13.6	1.388	0.0003415
13.616	1.388	0.0003999
13.632	1.388	0.0003444
13.648	1.388	0.0002392
13.664	1.388	0.0002625
13.68	1.388	0.000212
13.696	1.388	0.0002137
13.712	1.388	0.0001971
13.728	1.388	0.0002022
13.76	1.387	0.0001667
13.792	1.387	0.0001522
13.824	1.387	0.0001273
13.856	1.387	0.0001276
13.888	1.387	0.0001279
13.936	1.387	0.0001284
13.952	1.387	0.0001285
13.968	1.387	0.0001287
13.984	1.387	0.0001288
14.0	1.387	0.000129
14.195	1.387	0.0001811
14.391	1.387	0.0001632
14.609	1.387	0.0001606
14.828	1.387	0.0001682
15.059	1.387	0.0001761
15.282	1.387	0.0001895
15.424	1.387	0.0002022
15.518	1.387	0.000209
15.87	1.386	0.0002195
15.929	1.386	0.0002146
16.093	1.386	0.000211
16.325	1.386	0.0002082
16.477	1.386	0.0002161
16.593	1.386	0.0002295
16.709	1.386	0.0002371
16.802	1.386	0.0002445
16.965	1.386	0.000253
17.118	1.386	0.0002615
17.318	1.386	0.000252
17.577	1.386	0.0002431
17.647	1.386	0.0002377
17.659	1.386	0.0002316
17.706	1.386	0.0002259
17.753	1.386	0.0002201
17.812	1.386	0.0002146
18.023	1.386	0.0002107
18.465	1.386	0.0002224
18.535	1.386	0.0002298
18.581	1.386	0.000237
18.628	1.386	0.0002443
18.674	1.386	0.0002516
18.709	1.386	0.0002655
19.071	1.386	0.0003548
19.435	1.386	0.0004359
19.824	1.386	0.0004915
20.221	1.386	0.0005592
20.651	1.386	0.0006056
21.081	1.385	0.0007931
21.535	1.386	0.0012847
22.011	1.386	0.0016962
22.512	1.387	0.0013305
23.0	1.392	0.0011522

Optical transmission calculator

Free-standing sample in vacuum, normal incidence

Transmittance T: —
Reflectance R: —

Fresnel reflection calculator

R_p: —
R_s: —
R = (R_p+R_s)/2: —
Phase φ_p: —
Phase φ_s: —
Brewster angle θ_B: —
Critical angle θ_C: —

C₈H₁₈ (Octane): all datasets

About C8H18 (Octane)

Octane (C₈H₁₈) is a straight-chain alkane comprising eight carbon atoms. It is a primary constituent in gasoline and is employed as a reference standard in the octane rating scale, which measures a fuel's ability to resist engine knocking or pinging. As a liquid at room temperature and atmospheric pressure, octane is less dense than water and possesses a characteristic hydrocarbon odor. In the optical domain, octane's properties can be utilized in certain specialized settings. While it's not highly reactive, safety precautions should be followed when handling octane, particularly due to its flammability. Structural formula: CH₃(CH₂)₆CH₃

More about C8H18 (Octane) →

Provenance

Version: 1 (snapshot c5c2f18)
Source page: refractiveindex.info
Original file: database/data/organic/C8H18 - octane/nk/Anderson.yml
ID: ds_d811a1a30a6e
API: /v1/datasets/ds_d811a1a30a6e

Plot