Nujol is an important material used in infrared spectroscopy. It is a heavy paraffin oil so it is chemically inert and has a relatively uncomplicated IR spectrum, with major peaks between 2950-2800, 1465-1450, and 1380-1370 cm^-1. IR spectrum of a thin film of liquid ethanol. ... Paraffin is a common name for a group of high molecular weight alkane hydrocarbons with the general formula CnH2n+2, where n is greater than about 20, discovered by Carl Reichenbach. ... In English, to be inert is to be in a state of doing little or nothing. ... Legend: γ = Gamma rays HX = Hard X-rays SX = Soft X-Rays EUV = Extreme ultraviolet NUV = Near ultraviolet Visible light NIR = Near infrared MIR = Moderate infrared FIR = Far infrared Radio waves: EHF = Extremely high frequency (Microwaves) SHF = Super high frequency (Microwaves) UHF = Ultrahigh frequency VHF = Very high frequency HF = High frequency...

To obtain an IR spectrum of a solid, a sample is combined with nujol to make a mull (a very thick suspension), and is usually sandwiched between sodium chloride plates before being placed in the spectrometer. For very reactive samples, the layer of nujol can provide a protective coating, preventing sample decomposition during acquisition of the IR spectrum. Suspension may refer to: suspension (chemistry) suspension bridge suspension (music) suspension (vehicle) (system of shock absorbers and supports that connect a vehicle to its wheels) suspension (civil engineering) (system that connects a structure to its foundation, for example in earthquake protection) suspension (topology) suspension (body modification) suspension bondage suspension (figure...