Optical constants

Refractive index of C₃H₇OH (Propanol)

Kozma et al. 2005: iso-propanol; n 0.230–0.641 µm

Data: formula 5
Range: 0.23–0.6407 µm
Temperature: 295 K
Licence: CC0-1.0

Axis Log x Log y

Click the plot to set the calculator wavelength.

At one wavelength

Refractive index n: 1.37683
Extinction coefficient k: 0

Permittivity ε₁: 1.89565
Permittivity ε₂: 0

Absorption coefficient α: 0 cm⁻¹
Penetration depth δ = λ/(2πk): — nm

Abbe number V_d: —
Chromatic dispersion dn/dλ: -0.0394767 µm⁻¹

Group index n_g: 1.40002
Group velocity dispersion: 69.9585 fs²/mm

Dispersion parameter D: -381.661 ps/(nm·km)
Photon energy: 2.11001 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): Kozma et al. 2005: iso-propanol; n 0.230–0.641 µm
c3h7oh = ls.fetch_refractiveindex("organic", "propanol", "Kozma", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(c3h7oh.range_nm)  # (230, 640.7) nm
eps = c3h7oh.eps([633])  # 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_0714ca0590b8/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/kozma-2005).

# ... 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=400, stop_nm=640, 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.

Dispersion formula

Cauchy (formula 5), λ in µm

n = 1.36485 + 0.00429404081 λ^{- 2.0} - 6.482338 \times 10^{-5} λ^{- 4.0} + 3.41833 \times 10^{-6} λ^{- 6.0}

Valid from 0.23 to 0.6407 µm.

Coefficients as stored

C_i	Value
C1	1.36485
C2	0.00429404081
C3	-2.0
C4	-6.482338e-05
C5	-4.0
C6	3.41833e-06
C7	-6.0

Comments and conditions

Isopropanol (2-propanol); 22 °C.

Conditions

temperature: 295 K

References

I. Z. Kozma, P. Krok, E. Riedle. Direct measurement of the group-velocity mismatch and derivation of the refractive-index dispersion for a variety of solvents in the ultraviolet. J. Opt. Soc. Am. B 22, 1479-1485 (2005)

doi:10.1364/josab.22.001479 Direct measurement of the group-velocity mismatch and derivation of the refractive-index dispersion for a variety of solvents in the ultraviolet, Journal of the Optical Society of America B (2005)

Cite

Ida Z. Kozma, Patrizia Krok and Eberhard Riedle. Direct measurement of the group-velocity mismatch and derivation of the refractive-index dispersion for a variety of solvents in the ultraviolet. Journal of the Optical Society of America B, 22, 1479 (2005), doi:10.1364/josab.22.001479; Data from the refractiveindex.info database (M. N. Polyanskiy, Sci. Data 11, 94 (2024), doi:10.1038/s41597-023-02898-2)

Data

Computed on 400 wavelengths, the same grid as the API and the library

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

C3H7OH (Propanol), Kozma et al. 2005: iso-propanol; n 0.230–0.641 µm: n and k versus wavelength
λ (µm)	n
0.23	1.44595
0.230591	1.445418
0.231184	1.444891
0.231779	1.444369
0.232374	1.443852
0.232972	1.44334
0.233571	1.442832
0.234171	1.44233
0.234773	1.441832
0.235377	1.441339
0.235982	1.440851
0.236589	1.440367
0.237197	1.439887
0.237807	1.439412
0.238418	1.438941
0.239031	1.438475
0.239646	1.438012
0.240262	1.437554
0.240879	1.437101
0.241499	1.436651
0.24212	1.436205
0.242742	1.435763
0.243366	1.435325
0.243992	1.434891
0.244619	1.434461
0.245248	1.434034
0.245879	1.433612
0.246511	1.433192
0.247144	1.432777
0.24778	1.432365
0.248417	1.431957
0.249055	1.431552
0.249696	1.431151
0.250338	1.430753
0.250981	1.430358
0.251627	1.429967
0.252273	1.429579
0.252922	1.429194
0.253572	1.428812
0.254224	1.428434
0.254878	1.428058
0.255533	1.427686
0.25619	1.427317
0.256849	1.426951
0.257509	1.426588
0.258171	1.426227
0.258835	1.42587
0.2595	1.425515
0.260167	1.425164
0.260836	1.424815
0.261507	1.424469
0.262179	1.424125
0.262853	1.423785
0.263529	1.423447
0.264207	1.423111
0.264886	1.422778
0.265567	1.422448
0.26625	1.422121
0.266934	1.421795
0.26762	1.421473
0.268308	1.421152
0.268998	1.420835
0.26969	1.420519
0.270383	1.420206
0.271078	1.419896
0.271775	1.419587
0.272474	1.419281
0.273174	1.418977
0.273877	1.418676
0.274581	1.418377
0.275287	1.418079
0.275994	1.417784
0.276704	1.417492
0.277415	1.417201
0.278129	1.416912
0.278844	1.416626
0.279561	1.416341
0.280279	1.416059
0.281	1.415778
0.281722	1.4155
0.282447	1.415223
0.283173	1.414949
0.283901	1.414676
0.284631	1.414405
0.285362	1.414137
0.286096	1.41387
0.286832	1.413605
0.287569	1.413341
0.288308	1.41308
0.289049	1.41282
0.289793	1.412562
0.290538	1.412306
0.291285	1.412051
0.292033	1.411798
0.292784	1.411547
0.293537	1.411298
0.294292	1.41105
0.295048	1.410804
0.295807	1.41056
0.296567	1.410317
0.29733	1.410076
0.298094	1.409836
0.298861	1.409598
0.299629	1.409361
0.300399	1.409126
0.301171	1.408893
0.301946	1.408661
0.302722	1.40843
0.3035	1.408201
0.304281	1.407974
0.305063	1.407747
0.305847	1.407523
0.306633	1.407299
0.307422	1.407078
0.308212	1.406857
0.309005	1.406638
0.309799	1.40642
0.310595	1.406204
0.311394	1.405989
0.312195	1.405775
0.312997	1.405563
0.313802	1.405352
0.314609	1.405142
0.315417	1.404933
0.316228	1.404726
0.317041	1.40452
0.317856	1.404316
0.318674	1.404112
0.319493	1.40391
0.320314	1.403709
0.321138	1.403509
0.321963	1.40331
0.322791	1.403113
0.323621	1.402917
0.324453	1.402721
0.325287	1.402528
0.326124	1.402335
0.326962	1.402143
0.327803	1.401952
0.328645	1.401763
0.32949	1.401575
0.330337	1.401387
0.331187	1.401201
0.332038	1.401016
0.332892	1.400832
0.333748	1.400649
0.334606	1.400467
0.335466	1.400287
0.336328	1.400107
0.337193	1.399928
0.33806	1.39975
0.338929	1.399573
0.3398	1.399398
0.340674	1.399223
0.34155	1.399049
0.342428	1.398876
0.343308	1.398705
0.344191	1.398534
0.345076	1.398364
0.345963	1.398195
0.346852	1.398027
0.347744	1.39786
0.348638	1.397694
0.349534	1.397528
0.350433	1.397364
0.351334	1.397201
0.352237	1.397038
0.353143	1.396877
0.354051	1.396716
0.354961	1.396556
0.355874	1.396397
0.356788	1.396239
0.357706	1.396082
0.358625	1.395925
0.359547	1.39577
0.360472	1.395615
0.361398	1.395461
0.362328	1.395308
0.363259	1.395156
0.364193	1.395005
0.365129	1.394854
0.366068	1.394704
0.367009	1.394555
0.367953	1.394407
0.368899	1.39426
0.369847	1.394113
0.370798	1.393967
0.371751	1.393822
0.372707	1.393678
0.373665	1.393535
0.374626	1.393392
0.375589	1.39325
0.376555	1.393109
0.377523	1.392968
0.378493	1.392828
0.379466	1.392689
0.380442	1.392551
0.38142	1.392413
0.382401	1.392277
0.383384	1.39214
0.384369	1.392005
0.385358	1.39187
0.386348	1.391736
0.387342	1.391603
0.388337	1.39147
0.389336	1.391338
0.390337	1.391207
0.39134	1.391076
0.392346	1.390947
0.393355	1.390817
0.394366	1.390689
0.39538	1.390561
0.396397	1.390434
0.397416	1.390307
0.398438	1.390181
0.399462	1.390056
0.400489	1.389931
0.401519	1.389807
0.402551	1.389683
0.403586	1.389561
0.404623	1.389438
0.405664	1.389317
0.406707	1.389196
0.407752	1.389076
0.4088	1.388956
0.409851	1.388837
0.410905	1.388718
0.411962	1.388601
0.413021	1.388483
0.414083	1.388367
0.415147	1.38825
0.416214	1.388135
0.417284	1.38802
0.418357	1.387906
0.419433	1.387792
0.420511	1.387679
0.421592	1.387566
0.422676	1.387454
0.423763	1.387342
0.424852	1.387231
0.425945	1.387121
0.42704	1.387011
0.428137	1.386902
0.429238	1.386793
0.430342	1.386685
0.431448	1.386577
0.432557	1.38647
0.433669	1.386363
0.434784	1.386257
0.435902	1.386152
0.437023	1.386047
0.438146	1.385942
0.439273	1.385838
0.440402	1.385735
0.441534	1.385632
0.44267	1.385529
0.443808	1.385427
0.444949	1.385326
0.446092	1.385225
0.447239	1.385125
0.448389	1.385025
0.449542	1.384925
0.450698	1.384826
0.451856	1.384728
0.453018	1.38463
0.454183	1.384532
0.45535	1.384435
0.456521	1.384339
0.457695	1.384243
0.458871	1.384147
0.460051	1.384052
0.461234	1.383957
0.46242	1.383863
0.463609	1.38377
0.464801	1.383676
0.465995	1.383584
0.467194	1.383491
0.468395	1.383399
0.469599	1.383308
0.470806	1.383217
0.472017	1.383126
0.47323	1.383036
0.474447	1.382947
0.475666	1.382857
0.476889	1.382769
0.478115	1.38268
0.479345	1.382592
0.480577	1.382505
0.481813	1.382418
0.483051	1.382331
0.484293	1.382245
0.485538	1.382159
0.486786	1.382074
0.488038	1.381989
0.489293	1.381904
0.490551	1.38182
0.491812	1.381736
0.493076	1.381653
0.494344	1.38157
0.495615	1.381488
0.496889	1.381406
0.498166	1.381324
0.499447	1.381243
0.500731	1.381162
0.502019	1.381081
0.503309	1.381001
0.504603	1.380921
0.5059	1.380842
0.507201	1.380763
0.508505	1.380685
0.509812	1.380606
0.511123	1.380529
0.512437	1.380451
0.513755	1.380374
0.515075	1.380298
0.5164	1.380221
0.517727	1.380145
0.519058	1.38007
0.520393	1.379995
0.521731	1.37992
0.523072	1.379845
0.524417	1.379771
0.525765	1.379697
0.527117	1.379624
0.528472	1.379551
0.529831	1.379478
0.531193	1.379406
0.532558	1.379334
0.533927	1.379263
0.5353	1.379191
0.536676	1.37912
0.538056	1.37905
0.539439	1.37898
0.540826	1.37891
0.542217	1.37884
0.543611	1.378771
0.545008	1.378702
0.546409	1.378634
0.547814	1.378565
0.549223	1.378498
0.550635	1.37843
0.55205	1.378363
0.55347	1.378296
0.554892	1.378229
0.556319	1.378163
0.557749	1.378097
0.559183	1.378032
0.560621	1.377966
0.562062	1.377901
0.563507	1.377837
0.564956	1.377772
0.566408	1.377708
0.567865	1.377645
0.569325	1.377581
0.570788	1.377518
0.572256	1.377455
0.573727	1.377393
0.575202	1.377331
0.576681	1.377269
0.578163	1.377207
0.57965	1.377146
0.58114	1.377085
0.582634	1.377024
0.584132	1.376964
0.585634	1.376904
0.587139	1.376844
0.588649	1.376785
0.590162	1.376725
0.591679	1.376666
0.593201	1.376608
0.594726	1.376549
0.596255	1.376491
0.597788	1.376434
0.599324	1.376376
0.600865	1.376319
0.60241	1.376262
0.603959	1.376205
0.605512	1.376149
0.607068	1.376093
0.608629	1.376037
0.610194	1.375981
0.611762	1.375926
0.613335	1.375871
0.614912	1.375816
0.616493	1.375762
0.618078	1.375707
0.619667	1.375654
0.62126	1.3756
0.622857	1.375546
0.624459	1.375493
0.626064	1.37544
0.627674	1.375388
0.629287	1.375335
0.630905	1.375283
0.632527	1.375231
0.634153	1.375179
0.635784	1.375128
0.637418	1.375077
0.639057	1.375026
0.6407	1.374975

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/Kozma.yml
ID: ds_0714ca0590b8
API: /v1/datasets/ds_0714ca0590b8

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