Mineral oil mull

The infrared spectrum of griseofulvln, obtained as a mineral oil mull, was run on a Perkin-Elmer Model 180 grating IR spectrophotometer. Important absorption assignments are given in Table V. The spectrum is given in Figure 6. 

FIGURE 6 Infrared Spectrum of Griseofulvin Obtained as a Mineral Oil Mull. 

Figure 1. Infrared Absorption Spectrum of Hydralazine Hydrochloride, Mineral Oil Mull...

A rapid, inexpensive way to get an IR of solids is to mix them with Nujol, a commercially available mineral oil. Traditionally this is called making a Nujol mull, and it is practically idiomatic among chemists. Though you won t see Rexall or Johnson Johnson mulls, the generic brand mineral oil mull is often used. 

The Nujol (mineral oil) mull is also often used for solids. In this method, a small amount of the finely divided solid analyte (one or two micron particles) is mixed together with an amount of mineral oil to form a mixture with a toothpaste-like consistency. This mixture is then placed (lightly squeezed) between... 

What advantage do the KBr pellet method and the reflectance methods have over the solution and mineral oil mull methods for solids ... 

Why is it that the presence of mineral oil in the mineral oil mull usually does not cause a problem with spectral interpretation ... 

Fig. 12. Mineral oil mull infrared spectra of (a) [Et4N]2[Ph3SnTa(CO)3] and (b) [Et4N]2-[HTa(CO)3] in the v(CO) region.

Progress of the reduction of K[Co(CO)4] by potassium metal in liquid ammonia to form K3[Co(CO)3] has been monitored by taking mineral oil mull infrared spectra of the isolated product after addition two and three equivalents of potassium metal. The resulting spectra in the v(CO) region demonstrated that the reduction was still substantially incomplete after consumption of two equivalents of K. However, the third equivalent of potassium metal caused all but traces of the [Co(CO)4]" to disappear and left mainly K3[Co(CO)3]. Figure 13 shows mineral oil mull infrared spectra of K3[Co(CO)3] and Na3[Co(CO)3] in the v(CO) region. The most intense... 

The infrared spectrum of a mineral oil mull of vitamin D3 recorded on a Model FTS 15E instrument (Digilab, Cambridge, Mass.) is shown in Figure 2 (18). Table I shows assignments for the significant infrared absorption bands (18). 

Chemists only began to use the technique routinely when commercial IR spectrometers had been developed.223 226 Three wartime research programmes created the initial demand, and provided the impetus for the production of commercial instruments. These were the US synthetic rubber programme,227 the British project to identify hydrocarbons in fuels from enemy aircraft,228 and the joint British-US penicillin programme. The mineral oil mull technique for obtaining the IR spectrum... 

The salt is a white solid, soluble in w ater, acetonitrile, methylene chloride, and alcohol. The cation is stable in neutral and acidic aqueous solution, but it is degraded in aqueous base. Because the cation is stable in aqueous solution, many of its salts can be readily prepared by metathesis or ion exchange. Principal infrared absorption bands of the iodide salt, run as a mineral-oil mull (exclusive of that in common with the mineral oil), occur at 2410(m), 2380(m), 1300(m), 1065 (w), 1037(w), 990(m), 950(s), 900(m), 855(w), 772(m), and 740(m) cm.-1. 

L-Arginine Monohydrochloride (Mineral Oil Mull) View Monograph... 

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