Homemade plasticine. Fun chemistry experience at home

ENTERTAINING EXPERIENCES AT HOME
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Homemade plasticine. Chemical experiments

Entertaining experiments in chemistry

Entertaining experiences at home / Chemistry experiments for children

Of course, plasticine can be bought at the store. Well, what of it? You can also buy a radio receiver, however, how many people pore over radio circuits!

For home-made plasticine, the only scarce raw material will apparently be oleic acid C₁₇Н₃₃COOH. However, it is probably in the school laboratory (and in general it is a very common acid, which is part of almost all fats). From it we get zinc salt - zinc oleate. To 35 parts (by weight) of heated oleic acid, add in small portions 5 parts of dry zinc white (you can take homemade pigment). Apply each new portion of whitewash only after the foam disappears from the addition of the previous one. If you didn’t have zinc white, you can replace them with ordinary chalk - then you will get calcium oleate. True, the quality of plasticine will be somewhat worse.

To the resulting syrupy oleate, add with constant stirring 18 parts of a mixture of equal amounts of oil and wax. To prepare it, melt the wax and add to it, stirring vigorously, liquid oil, such as vaseline. We emphasize once again - all components must be thoroughly mixed, the quality of the finished plasticine largely depends on this. As for wax, it would be better to take natural, bee, but in extreme cases it can be replaced with stearin (but not with paraffin). Stearin, on the other hand, can be easily prepared from laundry soap, as described in the "First Experiments" section.

When the mixture of oleate, oil and wax (or stearin) is ready, add to it 23 parts of sulfur, ground into a fine powder (you can take a pharmacy preparation), 15 parts of dry fine clay, sifted through a sieve, and 4 more parts of some mineral paints. You can, for example, take a mummy (iron oxide Fe₂O₃) - you already know how to cook this substance (do not forget about intensive and constant stirring). Once again, carefully stir the finished mixture and roll it out with a rolling pin on a sheet of plywood or tin. Plasticine is ready.

Here's just what a nuisance: zinc oleate smells not the best. But it can be drowned out with perfume. When mixing the starting products, add a little (a few drops) of a pleasant-smelling substance, such as rose or lavender oil, or at least cologne.

Author: Olgin O.M.

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