How to remove a stain?

How to remove a stain if you are dirty? And do you know that during chemical cleaning and stain removal, processes such as extraction, oxidation, reduction and adsorption are most often used? Of course, it is not worthwhile to spoil clothes for the sake of experiments. Let's do this: we'll prepare several pieces of light fabric, put different spots on it and try to remove them. And if the experiments are successful, you can risk putting a stain on your suit, or someone else's - if allowed...

How to remove a stain if you are dirty?

The most common spots are fat. Generate the fat stain can, as a rule, by extraction, selecting for this purpose a suitable solvent. To remove fresh fat spots, gasoline, turpentine, and medical ether are suitable. A cotton wool soaked in a solvent, wipe the stain several times, and the fat will pass into the solution. To the tissue does not remain halo, it must be wiped with soapy water or detergent solution.

But how to get old fat spots? Here one solvent can not do, we need mixtures. For example, gasoline, medical ether and turpentine (7:1:2) or wine alcohol, turpentine and medical ether (10:2:1).

To remove the stain on the colored fabric, care must be taken to ensure that the solvent does not damage the color. Before you begin, check to see if the solvent you are using does not change the color of the fabric.

Remove the stain from the oil varnish with a paste made of gasoline and white clay. The test mixture is applied to the stain and left until the gasoline has completely evaporated. In this case, adsorption is added to the extraction: white clay absorbs, absorbs substances extracted by gasoline.

Fresh stain from oil paint, first moisten with turpentine (to soften), and then remove with gasoline. If this treatment can damage the color, then wipe the stain with a hot glycerin solution or a mixture of it with an equal amount of wine alcohol.

Extraction can remove the stain from the grass. So, if you rub the stained place with alcohol (or medical ether), you can gradually extract the chlorophyll from the stain, and it will become discolored.

Ink spots, planted on clothes, also manage to sometimes discolor. For this, pour a little chalk or tooth powder on the stain and drip 2-3 drops of alcohol. The alcohol will dissolve the dye of the ink, and the chalk will absorb the colored solution. Remove the stained chalk with the blunt end of the knife, apply fresh chalk and alcohol and repeat this operation until the chalk is not white. Let it dry and remove the rests with a brush.

And how can the redox reactions help to remove stains? Fresh stains from berries and juices, for example, can often be removed simply by hot water. If this does not work, then these spots on white fabrics can be discolored by a solution of hydrogen peroxide. Saturate the stain with this solution, adding a few drops of ammonia to it, wipe it clean with a cotton swab and rinse with water. Peroxide (hydrogen peroxide) - a strong oxidizer, it oxidizes many dyes, and they become discolored.

Stains from hot iron on cotton and linen white fabrics can also be removed by oxidation-reduction reaction. As an oxidizer, an aqueous solution of bleach must be used (cautiously!) In a ratio of 1:50 by weight. When the tissue overheats, brown products of thermal oxidation form, and bleach destroys them, making them colorless. But keep in mind that as a result of the reaction, hydrochloric acid is formed, which itself can destroy the tissue. Therefore, immediately after cleaning, rinse the cloth with a weak solution of soda, and then rinse with clean water. Finally, if iodine has got on the cloth, then, wiping the stain with a solution of sodium thiosulfate, you will remove it without leaving a trace.

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