Method for Determination of Water in Butteroil by Near-Infrared Spectrophotometry

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Abstract
A double beam near-infrared spectrophotometer was used to quantitatively measure the amount of water in butteroil. The sample is dissolved in CCl4, split and 1/2 of the material dried by addition of calcium-hydride. The difference in absorption at 1.9 [mu] between the moisture-containing portion and the dried portion of the sample is equated with the moisture content of the original sample. Butteroil can be rapidly dried by contact with calcium-hydride, anhydrous CaCl2 and Linde Molecular Sieve-4A. Water could be removed from butteroil by vacuum drying of thin films of the material. Butteroil absorbs water at a relatively rapid rate which depends upon the temperature in water-saturated atmospheres.