Optical constants

Refractive index of C₃H₇OH (Propanol)

Wang et al. 2018: iso-propanol, 20 °C; n,k 1.66–19.1 µm

Data: tabulated nk
Range: 1.66–19.06 µm
Points: 488
Temperature: 293 K
Licence: CC0-1.0

Axis Log x Log y

Click the plot to set the calculator wavelength.

At one wavelength

Refractive index n: 1.35172
Extinction coefficient k: 0.001854

Permittivity ε₁: 1.82714
Permittivity ε₂: 0.00501218

Absorption coefficient α: 41.4556 cm⁻¹
Penetration depth δ = λ/(2πk): 482444 nm

Abbe number V_d: —
Chromatic dispersion dn/dλ: 0.08 µm⁻¹

Group index n_g: 0.90212
Group velocity dispersion: — fs²/mm

Dispersion parameter D: — ps/(nm·km)
Photon energy: 0.220612 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

# C3H7OH (Propanol): Wang et al. 2018: iso-propanol, 20 °C; n,k 1.66–19.1 µm
c3h7oh = ls.fetch_refractiveindex("organic", "propanol", "Wang-20C", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(c3h7oh.range_nm)  # (1660, 19060) nm
eps = c3h7oh.eps([5620])  # 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_1f60e477cd6b/lightsmith"
c3h7oh = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(c3h7oh.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (propanol/wang-2018-20c).

# ... load c3h7oh as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=c3h7oh)],
    medium_index=1.0,
    wavelengths=ls.WavelengthRange(start_nm=1660, stop_nm=19060, 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

Isopropanol, 20 °C.

Conditions

temperature: 293 K

References

C. C. Wang, J. Y. Tan, C. Y. Jing, L. H. Liu. Temperature-dependent optical constants of liquid isopropanol, n-butanol and n-decane. Appl. Opt. 57, 3303-3311 (2018) (Numerical data kindly provided by Chengchao Wang)

doi:10.1364/ao.57.003003 Temperature-dependent optical constants of liquid isopropanol, n-butanol, and n-decane, Applied Optics (2018)

Cite

C. C. Wang, J. Y. Tan, C. Y. Jing and L. H. Liu. Temperature-dependent optical constants of liquid isopropanol, n-butanol, and n-decane. Applied Optics, 57, 3003 (2018), doi:10.1364/ao.57.003003; Data from the refractiveindex.info database (M. N. Polyanskiy, Sci. Data 11, 94 (2024), doi:10.1038/s41597-023-02898-2)

Data

488 rows as published

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

C3H7OH (Propanol), Wang et al. 2018: iso-propanol, 20 °C; n,k 1.66–19.1 µm: n and k versus wavelength
λ (µm)	n	k
1.66	1.376	2.383e-05
1.668	1.37	3.569e-05
1.679	1.368	6.517e-05
1.69	1.362	9.055e-05
1.699	1.361	8.825e-05
1.708	1.359	7.522e-05
1.719	1.358	7.149e-05
1.728	1.357	7.573e-05
1.74	1.356	7.266e-05
1.749	1.356	6.37e-05
1.759	1.357	5.685e-05
1.768	1.357	4.81e-05
1.778	1.356	3.64e-05
1.788	1.355	2.904e-05
1.798	1.355	2.86e-05
1.808	1.354	3.168e-05
1.818	1.354	3.473e-05
1.828	1.353	3.234e-05
1.839	1.352	2.562e-05
1.849	1.351	1.922e-05
1.86	1.351	1.663e-05
1.868	1.35	1.57e-05
1.879	1.351	1.533e-05
1.89	1.353	1.595e-05
1.898	1.354	1.782e-05
1.909	1.354	2.268e-05
1.917	1.355	2.494e-05
1.929	1.354	2.291e-05
1.938	1.354	1.894e-05
1.949	1.354	1.565e-05
1.958	1.354	1.622e-05
1.97	1.352	2.016e-05
1.979	1.35	2.302e-05
1.988	1.348	2.484e-05
1.997	1.348	2.915e-05
2.01	1.348	3.793e-05
2.019	1.349	4.602e-05
2.029	1.35	5.801e-05
2.038	1.35	7.511e-05
2.048	1.351	9.945e-05
2.058	1.352	0.0001293
2.067	1.353	0.0001591
2.077	1.352	0.0001826
2.087	1.351	0.0001938
2.097	1.349	0.000192
2.108	1.347	0.0001826
2.118	1.346	0.0001694
2.128	1.346	0.0001538
2.139	1.345	0.0001384
2.15	1.345	0.0001257
2.157	1.345	0.0001192
2.168	1.346	0.0001115
2.179	1.347	0.0001066
2.19	1.347	0.0001044
2.197	1.347	0.0001031
2.208	1.347	0.0001014
2.22	1.346	0.000104
2.227	1.345	0.0001115
2.239	1.345	0.000149
2.246	1.345	0.0002093
2.258	1.345	0.0003715
2.266	1.345	0.0004862
2.278	1.345	0.0005399
2.286	1.347	0.0005538
2.298	1.348	0.0006868
2.306	1.349	0.0008106
2.319	1.349	0.0008152
2.327	1.348	0.0007057
2.34	1.348	0.0005463
2.348	1.348	0.0004737
2.357	1.346	0.000417
2.37	1.345	0.0003427
2.378	1.345	0.0003077
2.387	1.344	0.0002997
2.396	1.344	0.000329
2.409	1.344	0.0004373
2.418	1.345	0.0004983
2.427	1.345	0.0005139
2.437	1.345	0.0005317
2.446	1.347	0.000575
2.46	1.347	0.000633
2.469	1.347	0.0006346
2.478	1.346	0.0005724
2.488	1.346	0.0004722
2.498	1.346	0.0003792
2.507	1.346	0.0003063
2.517	1.345	0.000252
2.527	1.345	0.0002231
2.537	1.345	0.0002239
2.547	1.345	0.0002376
2.557	1.345	0.0002388
2.567	1.345	0.0002322
2.577	1.345	0.0002315
2.587	1.345	0.0002381
2.598	1.346	0.0002453
2.608	1.346	0.0002495
2.619	1.345	0.0002567
2.629	1.345	0.0002721
2.64	1.344	0.0002641
2.645	1.343	0.0002446
2.656	1.343	0.0001984
2.667	1.342	0.0001721
2.678	1.341	0.0001675
2.689	1.34	0.0001768
2.695	1.339	0.0001852
2.706	1.338	0.0002077
2.717	1.338	0.0002363
2.729	1.338	0.0002895
2.735	1.337	0.000341
2.746	1.336	0.0005263
2.758	1.335	0.0008031
2.77	1.333	0.00109
2.776	1.331	0.00123
2.788	1.33	0.00164
2.8	1.327	0.00491
2.806	1.324	0.00597
2.818	1.319	0.01158
2.824	1.318	0.01285
2.836	1.317	0.01332
2.849	1.317	0.01424
2.855	1.317	0.01504
2.868	1.316	0.02139
2.874	1.316	0.02409
2.887	1.314	0.02942
2.9	1.312	0.03725
2.906	1.312	0.04114
2.919	1.314	0.05527
2.926	1.315	0.06049
2.939	1.322	0.05931
2.946	1.328	0.05821
2.959	1.335	0.06599
2.966	1.34	0.06932
2.98	1.35	0.07336
2.987	1.357	0.07718
2.994	1.363	0.08004
3.007	1.372	0.08058
3.014	1.375	0.07855
3.029	1.382	0.06948
3.036	1.384	0.06983
3.05	1.387	0.06502
3.057	1.389	0.0615
3.064	1.391	0.05657
3.079	1.391	0.04718
3.086	1.39	0.04665
3.094	1.389	0.04477
3.108	1.389	0.0372
3.116	1.388	0.03537
3.123	1.386	0.03414
3.139	1.384	0.02886
3.146	1.385	0.02682
3.154	1.385	0.02538
3.169	1.382	0.01982
3.177	1.381	0.01628
3.185	1.38	0.01493
3.193	1.38	0.01516
3.208	1.377	0.01403
3.216	1.375	0.01216
3.224	1.373	0.01045
3.232	1.372	0.00935
3.249	1.369	0.00882
3.257	1.365	0.01085
3.265	1.362	0.01189
3.273	1.359	0.01062
3.29	1.356	0.00551
3.298	1.354	0.00429
3.307	1.35	0.00581
3.315	1.346	0.00908
3.324	1.339	0.01499
3.332	1.329	0.02199
3.349	1.312	0.05817
3.358	1.329	0.08571
3.367	1.369	0.09421
3.376	1.398	0.07589
3.384	1.402	0.05214
3.393	1.395	0.03989
3.402	1.389	0.03791
3.411	1.386	0.03802
3.429	1.387	0.03635
3.438	1.388	0.03396
3.447	1.389	0.03203
3.457	1.389	0.03358
3.466	1.391	0.03438
3.475	1.395	0.03298
3.484	1.399	0.02836
3.494	1.4	0.02225
3.503	1.399	0.01908
3.513	1.398	0.01678
3.522	1.395	0.01449
3.532	1.392	0.01187
3.542	1.388	0.00973
3.551	1.386	0.00847
3.561	1.385	0.00956
3.571	1.385	0.00924
3.581	1.386	0.00803
3.591	1.385	0.00664
3.601	1.383	0.00549
3.611	1.381	0.00637
3.621	1.381	0.00597
3.631	1.381	0.00522
3.641	1.38	0.00508
3.651	1.378	0.00516
3.662	1.377	0.00509
3.672	1.378	0.00512
3.682	1.378	0.00555
3.693	1.379	0.00571
3.704	1.38	0.00502
3.714	1.38	0.00446
3.725	1.377	0.00442
3.736	1.375	0.00486
3.746	1.374	0.00577
3.757	1.374	0.00551
3.768	1.374	0.00475
3.779	1.375	0.00431
3.79	1.375	0.00395
3.801	1.374	0.00369
3.812	1.373	0.00358
3.824	1.372	0.00358
3.835	1.373	0.00366
3.846	1.373	0.00375
3.858	1.371	0.0038
3.869	1.371	0.00372
3.881	1.371	0.00349
3.893	1.37	0.00316
3.904	1.369	0.00284
3.916	1.369	0.00263
3.928	1.37	0.00258
3.94	1.372	0.00265
3.952	1.372	0.00276
3.964	1.372	0.00279
3.976	1.371	0.00269
3.988	1.369	0.00246
4.001	1.368	0.00222
4.013	1.368	0.00204
4.026	1.369	0.00194
4.038	1.37	0.00188
4.051	1.37	0.00177
4.063	1.369	0.00159
4.076	1.368	0.0014
4.089	1.369	0.00131
4.102	1.369	0.00134
4.115	1.369	0.0015
4.128	1.368	0.00171
4.141	1.368	0.00189
4.155	1.369	0.00193
4.168	1.368	0.00183
4.181	1.367	0.00165
4.195	1.367	0.00145
4.209	1.366	0.00126
4.222	1.365	0.00106
4.236	1.366	0.0008816
4.25	1.368	0.0007734
4.264	1.367	0.0007184
4.278	1.364	0.0007082
4.292	1.365	0.0007581
4.306	1.366	0.0008243
4.321	1.366	0.0008745
4.335	1.365	0.0008873
4.35	1.365	0.0008911
4.364	1.366	0.0008861
4.379	1.366	0.0008574
4.394	1.365	0.0008147
4.409	1.365	0.0007765
4.424	1.366	0.0007436
4.439	1.366	0.0007018
4.454	1.366	0.0006632
4.47	1.365	0.000654
4.485	1.365	0.0006915
4.501	1.365	0.0007679
4.516	1.364	0.0008574
4.532	1.363	0.0009527
4.548	1.364	0.00104
4.564	1.364	0.00102
4.58	1.364	0.0008884
4.597	1.363	0.0007093
4.613	1.363	0.0005642
4.629	1.364	0.0004882
4.646	1.364	0.0004543
4.663	1.364	0.0004434
4.68	1.363	0.0004519
4.696	1.362	0.0004803
4.714	1.363	0.0005281
4.731	1.363	0.0005725
4.748	1.362	0.00059
4.766	1.361	0.0006135
4.783	1.361	0.0006849
4.801	1.361	0.0007803
4.819	1.362	0.0008192
4.837	1.361	0.0007971
4.855	1.36	0.0007626
4.873	1.361	0.0007051
4.891	1.361	0.000621
4.91	1.359	0.0005404
4.929	1.358	0.0004887
4.947	1.358	0.000459
4.966	1.359	0.0004502
4.985	1.358	0.0004602
5.005	1.358	0.0004932
5.024	1.359	0.0005693
5.044	1.36	0.0006766
5.063	1.36	0.0007401
5.083	1.359	0.0007311
5.103	1.359	0.0007172
5.123	1.359	0.0007284
5.144	1.358	0.0007634
5.164	1.358	0.0008278
5.185	1.359	0.0009395
5.206	1.358	0.00112
5.227	1.359	0.00144
5.248	1.357	0.00177
5.269	1.357	0.00173
5.291	1.357	0.00143
5.312	1.356	0.00119
5.334	1.357	0.00107
5.356	1.357	0.001
5.379	1.355	0.0009483
5.401	1.355	0.0009179
5.424	1.355	0.0009287
5.446	1.355	0.0009522
5.469	1.356	0.0009621
5.492	1.355	0.0009767
5.516	1.355	0.00102
5.539	1.353	0.00109
5.563	1.352	0.00117
5.587	1.351	0.0013
5.611	1.351	0.00162
5.636	1.353	0.00227
5.66	1.354	0.0028
5.685	1.354	0.00248
5.71	1.353	0.00206
5.736	1.351	0.00185
5.761	1.35	0.00174
5.787	1.351	0.00167
5.813	1.351	0.00162
5.839	1.352	0.00156
5.865	1.352	0.00152
5.892	1.35	0.00152
5.919	1.348	0.00157
5.946	1.346	0.00163
5.973	1.346	0.0017
6.001	1.347	0.00174
6.029	1.348	0.00178
6.057	1.347	0.00183
6.086	1.348	0.00187
6.114	1.348	0.00193
6.143	1.348	0.00198
6.173	1.348	0.00203
6.202	1.348	0.0021
6.232	1.344	0.00221
6.262	1.342	0.00234
6.292	1.343	0.00248
6.323	1.343	0.00262
6.354	1.341	0.0028
6.385	1.34	0.00302
6.417	1.336	0.00334
6.449	1.335	0.0037
6.481	1.337	0.00412
6.514	1.337	0.00467
6.547	1.335	0.00521
6.58	1.331	0.00587
6.613	1.326	0.00673
6.647	1.324	0.01059
6.682	1.321	0.01321
6.716	1.317	0.01898
6.751	1.317	0.0276
6.787	1.32	0.04245
6.822	1.335	0.05119
6.858	1.347	0.04301
6.895	1.347	0.03136
6.932	1.34	0.02827
6.969	1.333	0.03314
7.007	1.33	0.03711
7.045	1.33	0.04357
7.083	1.333	0.04679
7.122	1.336	0.04712
7.161	1.33	0.04526
7.201	1.321	0.05999
7.241	1.337	0.08822
7.282	1.37	0.08759
7.323	1.382	0.06133
7.365	1.377	0.04234
7.407	1.363	0.03771
7.45	1.357	0.04179
7.493	1.361	0.03987
7.536	1.358	0.0399
7.58	1.358	0.05188
7.625	1.368	0.05812
7.67	1.38	0.05971
7.716	1.388	0.05478
7.762	1.389	0.04457
7.809	1.385	0.0335
7.856	1.381	0.0234
7.904	1.374	0.01579
7.952	1.369	0.01184
8.001	1.364	0.01023
8.051	1.36	0.00901
8.101	1.354	0.01189
8.152	1.35	0.01522
8.204	1.35	0.01007
8.256	1.348	0.00621
8.309	1.338	0.01034
8.363	1.328	0.01301
8.417	1.319	0.01508
8.472	1.298	0.02324
8.528	1.277	0.06039
8.584	1.296	0.1104
8.642	1.345	0.114
8.7	1.355	0.09229
8.758	1.34	0.09421
8.818	1.349	0.126
8.878	1.393	0.1346
8.939	1.415	0.1125
9.002	1.422	0.1032
9.065	1.439	0.09055
9.128	1.447	0.06385
9.193	1.438	0.04026
9.259	1.423	0.02858
9.325	1.412	0.01795
9.393	1.404	0.01069
9.462	1.398	0.01142
9.531	1.393	0.01168
9.602	1.39	0.00881
9.673	1.386	0.01048
9.746	1.379	0.00994
9.82	1.373	0.00707
9.895	1.367	0.00681
9.971	1.361	0.00772
10.04	1.352	0.00578
10.12	1.342	0.00513
10.2	1.33	0.0081
10.28	1.308	0.01793
10.37	1.266	0.06112
10.45	1.285	0.1669
10.53	1.452	0.1611
10.62	1.492	0.07252
10.71	1.464	0.03232
10.8	1.435	0.01896
10.89	1.418	0.0165
10.98	1.408	0.01352
11.07	1.402	0.00982
11.17	1.397	0.00919
11.27	1.392	0.00752
11.37	1.385	0.00841
11.47	1.377	0.00967
11.57	1.372	0.01318
11.67	1.373	0.01668
11.78	1.371	0.01324
11.89	1.367	0.01045
12.0	1.359	0.0133
12.11	1.348	0.04304
12.22	1.376	0.0736
12.34	1.406	0.04999
12.46	1.402	0.01567
12.58	1.392	0.01335
12.7	1.386	0.018
12.83	1.379	0.01754
12.96	1.372	0.02028
13.09	1.369	0.01998
13.22	1.375	0.02269
13.36	1.377	0.0291
13.5	1.374	0.03425
13.64	1.363	0.04639
13.79	1.364	0.04915
13.93	1.375	0.04298
14.08	1.376	0.04114
14.24	1.373	0.04635
14.4	1.376	0.05237
14.56	1.381	0.04682
14.73	1.388	0.0373
14.89	1.393	0.03984
15.07	1.395	0.0509
15.25	1.385	0.0574
15.43	1.396	0.04418
15.61	1.41	0.04304
15.8	1.411	0.04082
16.0	1.421	0.03856
16.2	1.435	0.02186
16.4	1.438	0.01745
16.61	1.42	0.03122
16.83	1.423	0.04557
17.05	1.433	0.02723
17.28	1.417	0.03416
17.51	1.422	0.05329
17.75	1.408	0.06958
18.0	1.395	0.07484
18.25	1.397	0.07226
18.51	1.417	0.09726
18.78	1.43	0.08269
19.06	1.485	0.03164

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: —

C₃H₇OH (Propanol): all datasets

About C3H7OH (Propanol)

Propanol (C₃H₈O), also commonly referred to as propyl alcohol, comes in two isomeric forms: n-propanol (or 1-propanol) and isopropanol (or 2-propanol). These alcohols are clear, colorless liquids that are miscible with water and have a characteristic alcoholic odor. Both forms of propanol are used as solvents in the pharmaceutical, cosmetic, and chemical industries. n-Propanol is often employed in the manufacture of antiseptics, detergents, and disinfectants, whereas isopropanol, popularly known as rubbing alcohol, is used for its antiseptic properties and as a cleaning agent. In optics, the refractive properties of propanol can be explored when it's used as a medium or in conjunction with other materials to modify light behavior. Chemical formula (1-Propanol): CH₃CH₂CH₂OH Chemical formula (Isopropanol): (CH₃)₂CHOH

More about C3H7OH (Propanol) →

Provenance

Version: 1 (snapshot c5c2f18)
Source page: refractiveindex.info
Original file: database/data/organic/C3H8O - propanol/nk/Wang-20C.yml
ID: ds_1f60e477cd6b
API: /v1/datasets/ds_1f60e477cd6b

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