Preparation of drying oil without cooking. simple recipes

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FACTORY TECHNOLOGIES AT HOME - SIMPLE RECIPES
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Preparation of drying oil without cooking. Simple recipes and tips

Factory technologies - simple recipes

Directory / Factory technology at home - simple recipes

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Since cooking drying oil requires a special boiler and is dangerous in terms of fire, we present how to make linseed oil without cooking.

For 20 weight parts of linseed oil, 1 part of litharge (lead oxide) and 1 part of lead sugar (acetic acid oxide of lead) are taken. Lead sugar is dissolved in a small amount of water. At room temperature, 2 parts of water will be required, and if you take hot water, then much less. Half of the litharge is added to the lead sugar solution and the mixture is shaken. The remaining dose of litharge is diligently dissolved with a small amount of linseed oil.

When the litharge is dissolved in the oil, add the rest of the linseed oil to it and continue to stir, then add the above-mentioned mixture of lead sugar and carefully, for about 2 hours, stir, after which the mixture is allowed to settle. The oil will float to the top, and water with lead salts dissolved in it will settle below. Then the oil is drained and filtered through a cloth. It turns out a light, transparent drying oil, somewhat more liquid than boiled.

Such drying oil always contains a small amount of lead salts, which are undesirable for light paints and oil varnishes, since lead tends to darken over time. This is explained by the fact that lead combines with hydrogen sulfide.

To remove lead from drying oil, proceed as follows: take a 25% solution of sulfuric acid, pour it into drying oil and stir for half an hour. At first, drying oil becomes cloudy and takes on a milky hue, but soon it becomes transparent again, and lead salts settle to the bottom.

Author: Korolev V.A.

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