KCl (potassium chloride - salt) 
Original form Palik (1998)
Compiled by H. R. Wakeford 2013
Citation for use this data: Wakeford & Sing (2015) 

wavelength		n			k
0.02883	0.96	3.00E-02
0.02952	0.955	2.50E-02
0.03024	0.945	2.00E-02
0.03099	0.925	1.80E-02
0.03179	0.091	2.00E-02
0.03263	0.89	3.00E-02
0.03351	0.87	5.00E-02
0.03397	0.845	7.04E-02
0.03444	0.86	8.00E-02
0.03493	0.83	9.16E-02
0.03542	0.87	1.15E-01
0.03594	0.851	1.05E-01
0.03646	0.89	1.20E-01
0.03701	0.854	7.82E-02
0.03746	0.821	6.77E-02
0.03792	0.8	9.24E-02
0.03839	0.797	1.11E-01
0.03887	0.795	1.21E-01
0.03936	0.797	1.31E-01
0.03987	0.779	1.34E-01
0.04039	0.756	1.34E-01
0.04092	0.743	1.34E-01
0.04147	0.73	1.45E-01
0.04203	0.729	1.75E-01
0.04261	0.743	2.07E-01
0.0429	0.785	2.34E-01
0.0432	0.805	2.65E-01
0.0435	0.816	2.75E-01
0.04381	0.814	2.61E-01
0.04412	0.789	2.45E-01
0.04444	0.775	2.28E-01
0.04509	0.755	2.30E-01
0.04575	0.745	2.41E-01
0.04644	0.75	2.63E-01
0.04714	0.779	3.02E-01
0.0475	0.805	3.35E-01
0.04787	0.824	3.59E-01
0.04824	0.836	3.62E-01
0.04862	0.851	3.58E-01
0.04901	0.849	3.57E-01
0.0494	0.851	3.46E-01
0.0502	0.849	3.17E-01
0.05102	0.813	0.328
0.05188	0.806	3.63E-01
0.05276	0.819	3.88E-01
0.05367	0.834	4.13E-01
0.05414	0.849	4.18E-01
0.05462	0.86	4.20E-01
0.0551	0.868	4.20E-01
0.0556	0.872	4.18E-01
0.05661	0.814	4.16E-01
0.05714	0.79	4.88E-01
0.05767	0.82	5.69E-01
0.05821	0.918	6.12E-01
0.05932	1.01	5.87E-01
0.0599	1.06	5.30E-01
0.06048	1.07	4.49E-01
0.06108	1.02	3.55E-01
0.06168	0.926	4.11E-01
0.0623	0.982	5.84E-01
0.06294	1	4.97E-01
0.06358	1.01	5.33E-01
0.06491	1.09	5.25E-01
0.0663	1.17	4.89E-01
0.06775	1.15	3.87E-01
0.06927	1.11	3.67E-01
0.07005	1.07	3.82E-01
0.07085	1.07	4.11E-01
0.07167	1.09	4.28E-01
0.07257	1.13	4.20E-01
0.07336	1.14	3.76E-01
0.07424	1.13	3.57E-01
0.07606	1.09	3.22E-01
0.07798	1.05	3.17E-01
0.07999	1.01	3.28E-01
0.08211	0.965	3.44E-01
0.08434	0.931	3.67E-01
0.0867	0.883	4.15E-01
0.0892	0.791	4.41E-01
0.09184	0.69	7.31E-01
0.09465	0.841	9.50E-01
0.09611	0.914	1.04E+00
0.09763	1.04	1.22E+00
0.09919	1.34	1.29E+00
0.1008	1.57	1.12E+00
0.1025	1.67	9.59E-01
0.1042	1.74	7.67E-01
0.106	1.73	6.40E-01
0.1069	1.67	5.80E-01
0.1078	1.66	5.30E-01
0.1088	1.65	4.90E-01
0.1097	1.63	4.50E-01
0.1107	1.6	4.10E-01
0.1117	1.57	3.80E-01
0.1127	1.54	3.50E-01
0.1137	1.5	3.52E-01
0.1148	1.47	3.10E-01
0.1159	1.42	3.15E-01
0.117	1.38	3.60E-01
0.1175	1.36	3.80E-01
0.1181	1.37	3.85E-01
0.1192	1.395	3.80E-01
0.1204	1.35	3.70E-01
0.1216	1.3	3.50E-01
0.1228	1.24	3.55E-01
0.124	1.16	3.80E-01
0.1252	1.05	4.10E-01
0.1265	0.87	5.80E-01
0.1278	0.8	9.00E-01
0.1291	0.9	1.27E+00
0.1305	1.38	1.50E+00
0.1319	1.81	1.38E+00
0.1333	2.04	1.13E+00
0.1348	2.18	8.50E-01
0.1362	2.12	6.40E-01
0.1378	1.66	5.00E-01
0.1393	1.9	4.30E-01
0.1409	1.85	4.00E-01
0.1425	1.81	3.90E-01
0.1442	1.79	3.70E-01
0.1459	1.75	3.45E-01
0.1476	1.73	3.40E-01
0.1494	1.68	2.65E-01
0.1512	1.54	2.45E-01
0.1531	1.36	2.50E-01
0.155	1.15	4.60E-01
0.1569	1.13	9.00E-01
0.1589	1.3	1.36E+00
0.161	1.92	1.64E+00
0.1621	2.63	1.60E+00
0.1631	2.63	1.34E+00
0.1642	2.92	1.10E+00
0.1653	3	5.10E-02
0.1664	2.8	2.00E-02
0.1675	2.61	6.00E-02
0.1698	2.34	3.11E-03
0.1722	2.19	1.78E-04
0.17846	2.08	7.69E-06
0.1771	2	8.46E-07
0.1797	1.94	2.29E-07
0.18	1.89	2.29E-07
0.182	1.86	2.29E-07
0.1823	1.89	1.45E-07
0.184	1.83	1.45E-07
0.185	1.85	1.45E-07
0.186	1.82	1.45E-07
0.1879	1.79	1.45E-07
0.1888	1.78	1.45E-07
0.19	1.8	1.45E-07
0.1907	1.78	1.45E-07
0.1937	1.71	1.45E-07
0.2	1.67	1.45E-07
0.21	1.64	1.45E-07
0.22	1.62	1.45E-07
0.23	1.6	1.45E-07
0.24	1.58	1.45E-07
0.25	1.577	1.45E-07
0.26	1.56	1.45E-07
0.27	1.559	1.45E-07
0.28	1.551	1.45E-07
0.29	1.545	1.45E-07
0.3	1.54	1.45E-07
0.31	1.535	1.45E-07
0.32	1.53	1.45E-07
0.33	1.52	1.45E-07
0.34	1.523	1.45E-07
0.35	1.525	5.10E-10
0.36	1.52	5.10E-10
0.37	1.5217	5.10E-10
0.38	1.515	5.10E-10
0.39	1.512	5.10E-10
0.4	1.5	5.10E-10
0.42	1.5	5.10E-10
0.44	1.503	5.10E-10
0.47	1.501	7.60E-11
0.48	1.5011	7.60E-11
0.5	1.498	7.60E-11
0.52	1.496	7.60E-11
0.54	1.495	7.60E-11
0.56	1.49	1.27E-10
0.58	1.49	1.27E-10
0.6	1.48	1.27E-10
0.62	1.488	1.27E-10
0.64	1.48	1.27E-10
0.66	1.48	1.27E-10
0.68	1.486	1.27E-10
0.7	1.4855	1.27E-10
0.72	1.484	1.27E-10
0.74	1.484	1.27E-10
0.76	1.483	1.27E-10
0.78	1.4833	1.27E-10
0.8	1.482	1.27E-10
0.82	1.482	1.27E-10
0.84	1.482	1.27E-10
0.86	1.482	1.27E-10
0.88	1.48	1.27E-10
0.9	1.48	1.27E-10
0.92	1.48	1.27E-10
0.94	1.48	1.27E-10
0.96	1.48	1.27E-10
0.98	1.48	1.27E-10
1	1.479	1.27E-10
1.1	1.4788	1.27E-10
1.2	1.478	1.27E-10
1.3	1.4775	1.27E-10
1.4	1.477	1.27E-10
1.5	1.4766	1.27E-10
1.6	1.476	1.27E-10
1.7	1.476	1.27E-10
1.8	1.475	1.27E-10
1.9	1.475	1.27E-10
2	1.475	1.27E-10
2.2	1.474	1.27E-10
2.4	1.474	1.27E-10
2.6	1.474	1.27E-10
2.8	1.474	1.27E-10
3	1.4737	1.97E-10
3.2	1.47345	1.97E-10
3.4	1.473	1.97E-10
3.6	1.4728	1.97E-10
3.8	1.4725	1.97E-10
4	1.4722	1.97E-10
4.2	1.471	1.97E-10
4.4	1.471	1.97E-10
4.6	1.4712	2.11E-11
4.8	1.4708	2.11E-11
5	1.47	2.11E-11
5.2	1.47	2.11E-11
5.4	1.47	2.11E-11
5.6	1.469	2.53E-08
5.8	1.468	2.53E-08
6	1.468	2.53E-08
6.2	1.468	2.53E-08
6.4	1.3467	2.53E-08
6.6	1.467	2.53E-08
6.8	1.467	2.53E-08
7	1.467	2.53E-08
7.2	1.466	2.53E-08
7.4	1.466	2.53E-08
7.6	1.45	2.53E-08
7.8	1.464	2.53E-08
8	1.462	2.53E-08
8.2	1.462	2.53E-08
8.4	1.461	2.53E-08
8.6	1.461	2.53E-08
8.8	1.46	2.53E-08
9	1.46	2.53E-08
9.2	1.459	2.53E-08
9.4	1.458	2.53E-08
9.6	1.457	2.53E-08
9.8	1.457	2.53E-08
10	1.456	2.53E-08
10.2	1.455	2.53E-08
10.4	1.454	2.53E-08
10.6	1.454	2.53E-08
10.8	1.453	1.49E-07
11	1.452	1.49E-07
11.2	1.451	1.49E-07
11.4	1.45	1.49E-07
11.6	1.44	1.49E-07
11.8	1.445	1.49E-07
12	1.44	1.49E-07
12.2	1.447	1.49E-07
12.4	1.446	1.49E-07
12.6	1.445	1.49E-07
12.8	1.444	1.49E-07
13	1.443	1.49E-07
13.2	1.442	1.49E-07
13.4	1.441	1.49E-07
13.6	1.439	1.49E-07
13.8	1.4381	1.49E-07
14	1.4377	1.49E-07
14.2	1.436	1.14E-06
14.4	1.435	1.14E-06
14.6	1.433	1.14E-06
14.8	1.433	1.14E-06
15	1.431	1.14E-06
15.2	1.43	1.14E-06
15.4	1.42	1.14E-06
15.6	1.42	1.14E-06
15.8	1.42	1.14E-06
16	1.425	1.14E-06
16.2	1.42	1.14E-06
16.4	1.422	1.14E-06
16.6	1.421	8.76E-06
16.8	1.42	8.76E-06
17	1.418	8.76E-06
17.2	1.417	8.76E-06
17.4	1.415	8.76E-06
17.6	1.414	8.76E-06
17.8	1.412	8.76E-06
18	1.411	8.76E-06
18.2	1.409	8.76E-06
18.4	1.408	8.76E-06
18.6	1.407	8.76E-06
18.8	1.404	8.76E-06
19	1.403	8.76E-06
19.2	1.401	8.76E-06
19.4	1.399	8.76E-06
19.6	1.398	8.76E-06
19.8	1.986	8.76E-06
20	1.984	7.64E-05
20.5	1.39	7.64E-05
21	1.385	7.64E-05
21.5	1.38	7.64E-05
22	1.375	7.64E-05
22.5	1.37	7.64E-05
23	1.364	7.64E-05
23.5	1.358	7.64E-05
24	1.353	7.64E-05
24.5	1.346	7.64E-05
25	1.346	6.57E-04
25.5	1.334	6.57E-04
26	1.327	6.57E-04
26.5	1.32	6.57E-04
27	1.312	6.57E-04
27.5	1.3	6.57E-04
28	1.29	6.57E-04
28.5	1.29	6.57E-04
29	1.28	6.57E-04
29.5	1.3	6.57E-04
30	1.27	6.57E-04
30.5	1.2424	6.57E-04
31	1.253	6.57E-04
31.25	1.2431	6.57E-04
31.5	1.28	6.57E-04
32	1.222	6.57E-04
32.26	1.25	6.57E-04
32.5	1.21	6.57E-04
33	1.1991	6.57E-04
33.33	1.2	6.63E-03
33.5	1.866	6.63E-03
34	1.174	6.63E-03
34.48	1.15	6.63E-03
34.5	1.16	6.63E-03
35	1.1469	6.63E-03
35.71	1.1	2.30E-02
36.36	1.11	2.50E-02
37.04	1.05	2.80E-02
37.74	1.01	3.20E-02
38.46	0.99	4.20E-02
40	0.93	8.30E-02
41.67	0.85	0.14
42.55	0.86	0.17
43.48	0.8	0.18
44.44	0.7	0.2
45.45	0.53	0.35
46.51	0.64	0.58
47.62	0.7	0.52
48.78	0.65	0.5
50	0.57	0.53
52.63	0.41	0.77
55.56	0.31	1.05
57.14	0.23	1.2
58.82	0.17	1.5
60.61	0.15	2
62.5	0.17	2.2
64.52	0.24	2.9
66.67	0.44	4
68.97	1.1	5.5
71.43	5.3	4
76.07	5	0.8
76.92	4.1	0.32
80	3.5	0.23
83.33	3.2	0.2
90.91	2.9	0.15
100	2.7	0.11
105	2.65	9.00E-02
111	2.6	6.60E-02
117	2.55	0.11
125	2.5	0.11
133.3	2.45	0.1
142.9	2.2	9.20E-02
166.7	2.3	5.30E-02
200	2.2	4.00E-02