International
Tables for
Crystallography
Volume C
Mathematical, physical and chemical tables
Edited by E. Prince

© International Union of Crystallography 2006
International Tables for Crystallography (2006). Vol. C. ch. 3.3, p. 160

Table 3.3.2.1 

E. S. Larsen Jr,a‡ R. Meyrowitzb‡ and A. J. C. Wilsonc‡

a US Geological Survey, Washington 25, DC, and Harvard University, Cambridge, MA, USA,bUS Geological Survey, Washington 25, DC, USA, and cSt John's College, Cambridge, CB2 1TP, England

Table 3.3.2.1 | top | pdf |
Immersion media for general use in the measurement of index of refraction

Note: Further lists are given by Hartshorne & Stuart (1960[link]).

  [n^{20^\circ\rm C}_{D}] Temperature coefficient (dn/dT) Dispersion
Water 1.333 1 × 10−4 Slight
Glycerol 1.473 2.2 × 10−4 Slight
n-Octane 1.400 4.8 × 10−4 –
n-Hexadecane 1.434 3.8 × 10−4 Slight
Kerosene (Paraffin) 1.448 3.5 × 10−4 Slight
Petroleum oil (Nujol) 1.477 4 × 10−4 Slight
α-Chloronaphthalene 1.626 4 × 10−4 Moderate
Methylene iodide 1.740 6.4 × 10−4 Rather strong
Methylene iodide saturated with sulfur 1.778 6 × 10−4 Rather strong
AsBr3 plus 10% sulfur (mix with methylene iodide or α-bromonaphthalene for lower n) 1.814 (25° C) 7 × 10−4 Rather strong
2S, 2As2S2, 6AsBr3 (mix with 10% sulfur in AsBr3 for lower n) 2.003 (25° C) 6 × 10−4 Rather strong
2Se, 2As2S2, 6AsBr3 (mix with 10% sulfur in AsBr3 for lower n) 2.11 (25° C) 6 × 10−4 Rather strong