a) b) S1 Supporting Information for Transparent and colourless room temperature ionic liquids having high refractive index over 1.60 Yoko Kayama,a,b Takahiro Ichikawaa,b and Hiroyuki Ohno*a,b aDepartment of Biotechnology, Tokyo University of Agriculture and Technology, Nakacho, Koganei, Tokyo 184-8588, Japan; E-mail: ohnoh@cc.tuat.ac.jp Tributylhexadecylphosphonium azide (QN 3) was prepared from tributylhexadecylphosphonium bromide (Sigma-Aldrich (St. Louis, MO)) according to the procedure by Banert and Kirmse . Knowing a refractive index can help you (a) identify the medium in a liquid or (b) measure the purity and concentration of a … For Isopropanol, the result was . The resulting best-fit equation was used to find the refractive index at the highest energy data point in our experimental spectra. 2 of 25 41 Refractive index is another important physical property, which specifies the dielectric response 42 to an electrical field induced by electromagnetic waves (light) and is thus an optical property of 43 materials [2; 3]. The minimum deviation method was used, and the entire range was covered with a single instrument. For thin layer chromatography (TLC) analysis throughout this work, Merck precoated TLC plates (silica gel 60 F 254) were used. The refractive index, n, vs. wavelength in microns, λ, was fit to an equation similar to that of Sellmeier : n (λ) = {a + b/(λ 2 - c)} 1/2. Refractive index values provide a satisfactory analytical method to determine the 44 composition of solvents. Refractive Index of Cesium Bromide for Ultraviolet, Visible, and Infrared Wavelengths William S. Rodney and Robert I. Spindler The index of refraction of cesium bromide was measured at 37 wavelengths from 0.365 to 39.22 microns. The fitting of measured optical index data to the Sellmeier dispersion formula, using the variable projection algorithm, is described. 11-36/37/38-51/53 Alfa Aesar A10696: 3 Alfa Aesar A10696: 9-16-26-33-37-57-60 Alfa Aesar A10696: Danger Alfa Aesar A10696: DANGER: FLAMMABLE, causes CNS effects, irritates skin & eyes Alfa Aesar A10696: H225-H315-H319-H335-H411 Alfa Aesar A10696: Highly Flammable/Irritant SynQuest 1100-9-15: P210-P280g-P273-P305+P351+P338 Alfa Aesar A10696: R11,R36/37/38,R51/53 SynQuest 1100-9 … Magnesium sulfate anhydrous ... 103, and 102 Å) and a differential refractive index detector (Waters, 2410), with THF as eluent at a flow rate 1.00 mL/min (T = 35 °C). A number of high refractive index semiconducting inorganic nanofillers, such as ZnS, 14 ZnO 15 and TiO 2, 5 have been studied as additives to increase the n of polymer matrices. n (7800 cm-1) = 1.3640 at 27 °C. mol −1 : Appearance Colorless liquid Density: 1.354 g mL −1: Melting point −110.5 °C; −166.8 °F; 162.7 K Boiling point: 70.3 to 71.3 °C; 158.4 to 160.2 °F; 343.4 to 344.4 K Examples of fits obtained by this method to several Schott optical glasses and non-glass materials are given. Tributylhexadecylphosphonium bromide (97%) was purchased from Fluka. major impetus for research in high refractive index composite materials. Density, Viscosity, Speed of Sound, and Refractive Index of a Ternary Solution of Aspirin, 1-Butyl-3-methylimidazolium Bromide, and Acetonitrile at Different Temperatures T = (288.15 to 318.15) K. Hemayat Shekaari * Mohammed Taghi Zafarani-Moattar; Seyyedeh Narjes Mirheydari Refractive index is the measurement of that angle: the ratio of the velocity of light in the air to the velocity of light in a medium through which it passes.