How to clean copper at home. How to clean copper from oxidation products? How to make copper products shine

Copper products are not only coins that are collected by numismatists, but also a variety of decor items that have beauty and elegance. But over time, the metal becomes coated with oxides. Copper oxide is a brown or black coating that appears on copper products under the influence of moisture. This plaque gives coins and jewelry an unattractive appearance. For this reason, each owner of such products wonders how to clean copper with their own hands at home.

Lemon copper cleaning

What can not be done?

Before you begin to cleanse copper from dirt and oxides, you should know which cleaning agent can not be used for this purpose. Such is a powder containing abrasive particles that can scratch the metal, after which it will not be possible to return to its original form. The use of any acids (citric, sulfuric, hydrochloric) can also ruin a copper product, especially when it comes to a coin made of copper. Fragile copper decor items should not be boiled or exposed to hot steam, otherwise they may break.

Facilities

You can clean copper at home using the following tools:

Soap solution: this is the easiest product to make, ideal for caring for copper if the product from it is slightly contaminated. It is enough to soak the copper product in warm soapy water for several hours, rinse it and wipe it dry.
Soap paste: if the item needs a more thorough washing, then you can prepare a soap paste. It is simple to do: take a bar of soap and rub it on a fine grater, then add water so that a thick paste is obtained. Such a mass must be coated with a copper product. It is advisable to leave the gruel for several days - this approach will improve the cleaning result.
Lemon: you can take half of this fruit and carefully rub the copper product with the cut side. At the end of the procedure, the item must be gently cleaned with a brush.
Acetic gruel: cleaning copper with this tool is very effective. To prepare the gruel, you need to take in equal parts salt and flour, and then combine them with vinegar so that it looks like a dough. The mass is applied to a copper object and waiting for it to dry. As soon as the mass dries on the metal surface, it should be brushed off and the product itself should be thoroughly rinsed.
Ammonium chloride (ammonium chloride): this tool is perfect if the copper product is coated with a thick layer of patina. The powder must be poured into a recessed bowl, and a copper object must be heated. After this, the hot product should touch the ammonia powder. Thus, you need to process the entire surface of the product.
Ketchup: This food product is often used to clean copper products. You need to apply a thick layer of ketchup on the thing and leave it for a few minutes. After the product should be washed with water and wipe dry with a rag.
Kefir: the composition of this drink includes acid, which effectively removes dirt from the surface of copper products. It is enough to soak microfiber or cotton wool with kefir and proceed to clean the object from copper.
Olive oil: this product is suitable for cleaning small copper objects, such as coins. However, the owner of such products should be prepared for the fact that cleaning can last a month, but the main advantage of this cleaning method is that the oil can not harm the metal in any way. How to clean copper: you need to take a deep bowl and pour olive oil into it, and then put objects from copper in it. After a few days, they are removed and cleaned with a soft brush, after which they are again immersed in oil. For one to two months, this action is repeated 5-6 times.
Trilon-B: When answering the question of how to clean copper, this agent should be mentioned. It is bred in water in this proportion - 1 part Trilon-B and 10 parts water. The cleaned item is immersed in the resulting solution and its condition is monitored. As soon as the desired result is achieved, the copper product must be removed and washed in running water.

Cleaning copper with ketchup

If the copper decor item has faded, but has not yet had time to get dirty, it can be cleaned with a crumpled newspaper (this way the windows were previously cleaned).

Many owners of copper products wonder not only about how copper can be cleaned of impurities, but also about how to give it a perfect look. To do this, you need to prepare a tool consisting of such components:

water - 1 liter;
potassium permanganate - 5 grams;
copper sulfate - 50 grams.

A solution is prepared from these components and heated to a low heat to 80 degrees. After that, a copper object is immersed in it for several hours. Cleaning is completed by rinsing the product with clean water. After drying, you can cover the metal with a layer of a mixture consisting of alcohol and benzene, taken in equal parts.

If a copper product has a high value from the point of view of history and culture, then it is recommended to entrust the care of it to a professional, since improper cleaning can lead to damage to a valuable item.

Beginner collectors and lucky ones, in whose hands were the ancient copper pennies, rubles, money, fifty kopecks, hryvnias or hryvnias, looking at them, think: how to clear an old copper coin? And, as it turned out, the most common mistake they made was trying to return the coin to its luster. And this greatly reduces its market value! Indeed, the main thing in the cleaning process is not to overdo it and not deprive the coin of a noble patina, emphasizing its antiquity! Let's try at home to clear the coins and not damage your collection.

What a novice should remember

Of course, it is better if your rarities are cleared by a professional, but he himself is quite capable of coping with this task. To begin with, the numismatist needs to remember that the natural oxides on the ancient copper coin, which are dark brown and sometimes black in color, are called patina. They can not be deleted! They not only add value to your rarity, but also protect it from the damaging effects of the environment. Consider the patina - if it is even, just wash your coin with warm water and wipe it with a soft cloth.

Citric acid will help in cleaning coins

In cases where the oxide layer is uneven and thick, it must be removed. There are several ways to do this. For starters, it’s worth knowing how to cleanse with citric acid, which can be purchased at any supermarket.

Dissolve three parts of acid in seven parts of water, thus obtaining a 30% solution.
Lower the coin into it and wait no more than 15 minutes.
As a result of a chemical reaction, purification will occur and the dirt will rise to the surface.
if the coin acquires a pinkish tint, it will change in a few weeks.
After restoration with acid, the coin must be washed in water with soap containing alkali in order to stop the effect of acid on the metal.

Sometimes for the best result, a repeat of the cleaning process is required.

Can I use laundry soap?

You can clean the collection in another, more secure way. Numismatists know very well how to clean copper coins with household soap. To do this, they plan it on a fine grater and prepare a solution (ratio: 1 part soap and 8 parts water), stirring it thoroughly. Coins are placed in soapy water for two weeks. Periodically, the water is put on fire and heated, not bringing to a boil. The dirt from the coins will begin to disappear during this time, however, sometimes (especially if the oxide layer is thick) you have to make additional efforts to clean (for example, clean them with a soft toothbrush), but most often it is enough to wipe such a coin with a cloth.

By the way, with the help of soap it is best to restore the old and Soviet, released before 1924. And more modern ones can be ruined by such a cleaning!

How to clean copper coins from greens and other stains

In order to save the collection material from stains, it can be boiled over low heat in oil. A good result can be obtained using liquid paraffin, as it has a rather high boiling point. Namely, it is required for successful cleaning.

Coins are kept in boiling oil for 10 minutes, do not forget to just cover the container with a lid to avoid soot. Then they are allowed to cool and washed with soap. Remember to dip the coin in ethanol for a few minutes to remove the fat. After this procedure, it can take its rightful place in your collection.

How to clean copper coins from oxidation

If the coin is covered with a dark cherry coating of copper oxide, then it can be removed by immersing the coin in a 15% ammonia solution (a 10% solution of ammonium carbonate, which is less aggressive with respect to copper, is also used instead).

A dark green color indicates the presence of carbon dioxide. This plaque is removed using (and exactly how it was described above). A less aggressive way is keeping the coins in kefir for 2-3 hours. Do not forget to periodically look at how the process of purification occurs.

Sometimes there are coins that are covered with a pale yellow coating of carbon dioxide lead. This, as a rule, indicates that in its alloy there is a lot of the mentioned metal or that it lay with lead objects for a long time. Such plaque is well removed using a 10% solution of acetic acid.

What to do if rust appears on the coin

If you are concerned about how to clean copper coins from rust, you will have to use a slow-acting reagent. This The thicker the layer of rust, the longer the coin will have to lie in the reagent.

And some numismatists advise purification using Coca-Cola. This method, although it seems somewhat strange, is nevertheless very effective.

Dry the coins after cleaning

After you managed to clean the copper coins from dirt and oxides, you need to dry them. To do this, it is best to use paper towels folded in several layers, and on top cover your cleaned antiquity with another towel. Use only soft ones for this - you won’t scratch the surface of the coin! By the way, it can also be completely dried at a temperature of 100 ° C. And in order to prevent and slow down the oxidation processes, periodically rub the collection material with a crumpled newspaper.

What to do if a copper coin has lost a noble patina?

If you still overdo it or for some reason you had to completely clear the coin, you can restore the patina layer by artificially aging the product. True, peeled coins eventually acquire a patina themselves, but it can look uneven and this greatly spoils the appearance of the collection material. In order to avoid this, the coin is degreased and dipped for 15 seconds in a 10% hyposulfite solution, and after drying it is wiped with a soft cloth. The described operation will help to appear on the subject of antiquity a smooth and beautiful patina.

If you still poorly know in practice how to clean copper coins, then it is worth practicing on less valuable products and only then move on to the most expensive copies of your collection. In the case when the coin became unnaturally light as a result of cleaning, put it on the sunny windowsill, where in a week it will get its normal look. True, one must not forget to flip it regularly.

If you come across a coin struck by the so-called "bronze disease", then it is better to give it to a professional restorer. This can be distinguished by oxides on its surface, similar to light green grains. And the coin itself, as a rule, is badly destroyed and crumbles, if picked up.

A few words in the end

We hope that after reading the question of how to clean copper coins at home, it does not seem too complicated for you. But still I want to warn that especially expensive and rare copies of her collection should be given into the hands of a specialist. Otherwise, it may turn out that your rarity is hopelessly ruined.

By the way, paste, salt, baking soda and sand are substances that can cause irreparable damage to the appearance of the collection material. After all, all these are abrasive substances that can scratch the surface of a coin and, accordingly, reduce its value.

Good luck with the restoration and collecting!

Copper was one of the first metals developed by man in prehistoric times. Weapons and tools, household utensils and jewelry were made from copper.

And all these millennia, people faced the question: how to clean copper products from inevitably stains appearing on them.

Why should copper products be cleaned regularly?

During use and storage, copper products are coated with a dark or green coating. An oxide film is formed as a result of the interaction of a metal with atmospheric oxygen. Heating, using the item outdoors or in rooms with high humidity accelerate the formation of plaque. At the same time, dishes and decorations lose their appearance and look untidy. In the sailing fleet, most of the metal parts of the ship were made of copper, and there was even such an expression “to scrub the copper”.

In addition, the chemical compounds that make up plaque can have a harmful effect on human health. Therefore, copper products must be cleaned regularly.

Since ancient times, people have perfected cleaning methods, using both mechanical and chemical methods.

Effective Cleaning Methods

Today, the arsenal of tools to clean copper has expanded significantly. Together with old vinegar, sand and wire sponges, a large number of both specially designed products and those adapted by folk craftsmen are used. Among the latter are quite unexpected.

How to clean copper

Tomato ketchup. Apply a small amount of delicious seasoning to the stain, soak for several minutes. Wash off with plenty of water.
In case of light soiling, you can try to wash them with a regular gel detergent. The gel is squeezed onto a soft sponge, then applied to a copper object. After a minute exposure, rub the surface and rinse with water.
It is used for large products, such as, for example, a samovar. Lemon is cut in half and half rubbed on the surface of the product. Next, clean with an elastic, fluffy brush and rinse with water.
Vinegar dough. Vinegar and ordinary table flour are mixed in equal proportions. Stir until a homogeneous pasty mass. Next, the paste is spread with a thin layer on the surface to be cleaned. After waiting for complete drying, the product is removed with a rag or wooden spatula. After that, the product must be polished with a soft cloth.

If the above methods are unsuccessful, use the following method:

Prepare a basin or pot of stainless steel.
Pour vinegar and add a couple of tablespoons of regular table salt. Stir well.
Immerse the product to be cleaned in the solution and bring to a boil.
Remove from heat and let cool at room temperature.
Drain the cooled solution, rinse the copper object and wipe dry.

If you decide to clean the copper, take precautions. The use of protective gloves and glasses is mandatory. If you plant vinegar essence, you should provide ventilation.

Copper cleaning at home

Copper utensils and jewelry should be cleaned regularly. With regular maintenance, the copper is cleaned by regular washing or wiping with kitchen or sanitary gel. If the raid covers a considerable area and is not removed by simple means, more radical cleaning methods are used.

What else can you clean copper

Powdered citric acid is diluted at the rate of a tablespoon of acid per liter of water. Add a teaspoon of table salt and mix thoroughly. The resulting solution is wiped plaque spots using a sponge or cloth. The method is convenient for objects that do not fit in the sink: large figurines, door and window fittings, samovars, teapots, etc.
Black deposits should be cleaned with ammonia. If you have to clean the dishes, be sure to rinse the utensils thoroughly with plenty of water. Entering ammonia in the human body can lead to serious poisoning. In the event that individual spots merge into a continuous layer of plaque, it is better to soak the whole product for one to three minutes.
A red coating should be cleaned with an ammonia solution with a strength of no higher than 10%. Caution! Ammonia is toxic. Ensure adequate ventilation.
A coating of yellow and black edema is good to clean with a mixture based on the usual 9% vinegar. One part of vinegar is taken one part of salt and two parts of water. In the tank with the solution, immerse the item to be cleaned and bring the mixture to a boil. They carefully monitor the disappearance of spots - as soon as they dissolve, stop boiling and allow the tank to cool. Next, the product should be washed with plenty of water and wiped dry.

Before you begin cleaning from the oxides of the entire copper object, you should check the effect of the cleaning composition in an inconspicuous place or in a small area. If the product is effective and does not damage the surface, you can clean the entire product.

How to make copper products shine

If you just clean the copper, the spots will go away, but the thing itself will not shine. A dull surface can be made shiny by one of the following methods:

Mechanical polishing with a newspaper or printing leaflet, printed only in black ink. Rub the surface until the gloss is restored.
Rub with a weak solution of hydrochloric acid. Precautions must be taken: the room must be well ventilated, the use of protective gloves and glasses or a transparent face shield is mandatory.
Mix in equal proportions food vinegar, table flour and ordinary salt. Stir to a thick paste. Apply the paste to the cloth and polish the surface to a shine. At the end of the operation, rinse the item with warm water.

To restore shine to copper products, you should regularly look after them. Then it will be possible to do without the use of potent chemicals hazardous to health.

The reasons for the appearance of plaque on copper

As copper products are used or stored, their luster gradually fades, they begin to become covered with plaque - oxide films. They have a variety of shades - from dark green to light blue.

There are several main causes of plaque:

Due to contact with oxygen by air, the copper surface is covered with a layer of green patina.
Copper jewelry darkens in contact with skin and sweat secretions. If copper is darker very quickly, this may indicate a health problem.
Plaque also occurs in high humidity or in direct contact with water.

Artisans often intentionally patinate their products, giving them a more antique look. This is the so-called “noble patina”

Purification of copper from white plaque

White plaque is also an oxide film. It often occurs on the surface of copper alloys. Its color is determined by the metals that make up the alloy. Such an oxide layer can be cleaned by the following methods:

with a low content of other elements in the material of the part, sulfamic acid is used. This potent chemical should be used with great care, limiting the time and area of \u200b\u200bits exposure. Be sure to carefully observe safety measures.
A mixture of two tablespoons of salt per glass of whey is made. The resulting composition is rubbed onto the surface using a soft cloth. After you have finished cleaning, rinse and dry the product thoroughly.
You can also clean white plaque with ordinary ketchup. A little seasoning is applied to the subject, the acidic environment of ketchup restores its original appearance and shine. After cleaning, rinse with plenty of water and wipe dry
A thick layer of white plaque should be cleaned by boiling in a mixture of sodium chloride and 9% food vinegar. The object is boiled until the plaque dissolves, it is slowly cooled and washed with plenty of cold water.
Another way to clean white plaque is with a mixture of ammonia and powder chalk. The thick paste obtained after mixing should be applied to the item and rubbed with a stiff brush. At the end of the process, wash and wipe the surface.

To qualitatively clean copper objects, you have to spend a lot of time and effort, but brightly shiny products will delight the eye.

How to clean copper from black and green plaque

If you want to clean copper from plaque in green and black, use the following methods:

With a mixture of oxalic acid, turpentine and ethanol, the cloth is moistened and the item is rubbed several times. Ethanol degreases the surface, acid dissolves the oxide layer.
A mixture of powdered chalk and kerosene is made. Lump chalk should be crushed beforehand. This tool can not only clean, but also polish copper objects
Warm soapy solution (or other non-abrasive detergent). The product is completely immersed in the solution and rubbed with a dense sponge.
To clean copper products, you can also use a special composition for cleaning copper coins and Trilon B. medals.

Important: Plaques of black and green shades are harmful to health, kitchen utensils covered with them cannot be used for cooking and preserving food.

Cleaning copper from rust

When copper objects come into contact with iron objects, in addition to patina, rust can also appear - flocculated iron oxides.

Rust can be cleaned with strong acid solutions. The sequence of operations is as follows:

Prepare two containers of the same size from ceramic, glass or stainless steel.
Wear personal protective equipment: glasses or a transparent face shield, gloves and a respirator.
Pour an aqueous solution of soda into one container.
Pour an acid solution into another.
Slowly and carefully, using tweezers or pincers, fully immerse the copper object.
During the reaction, dark smoke will appear.

Cola Rust Removal

In addition to chemicals, a Coca Cola drink can also be used to clean copper products. It contains phosphoric acid. (A good reason to think about whether to drink such a drink)

Precautions when cleaning copper

To preserve people's health and material values, the safety rules should be strictly observed:

When working with chemically active substances, it is imperative to provide room ventilation.
Clothing and shoes should be tight and leave no exposed skin.
The use of protective gloves and glasses (face shield) is mandatory.
Do not lean on containers with reagents, especially if there is a violent reaction with the release of gaseous products and spraying.
In order not to scratch the surface, do not clean copper products with stiff metal wire brushes and rough abrasive materials.
It is not necessary to keep objects in acid solutions longer than necessary - in addition to the oxide layer, it is fashionable to dissolve the product itself.
Valuable figurines, coins and decor items should be cleaned only with mild detergents. It will not be superfluous to consult with experienced specialists.

Timely and regular care will maintain a beautiful appearance, true color and radiant shine for many years.

How to clean copper? The relevance of this issue is due to the fact that products from this metal are used by mankind for many centuries. For a long time, the value of this metal was so high that it was equated with gold. The development of technology has led to the fact that it was possible to significantly reduce the cost of copper production. This made it possible to produce from this metal not only jewelry, but also dishes, interior items. The high popularity of this metal and alloys based on it is explained not only by its decorative effect, but also by its unique characteristics - high ductility, thermal conductivity, corrosion resistance, etc.

Why should copper products be cleaned regularly?

Regular cleaning of copper utensils and other items made from this metal is necessary because during operation they quickly darken or become covered with a green coating - an oxide film. The most actively oxidized are those products made of copper and its alloys, which during operation are often heated or used outdoors. Tableware made of copper, with active use, quickly loses its original luster and dims, its surface may become black.

Copper jewelry behaves in a slightly different way: they may first fade and lose their luster, and then again take their original form. Some people believe that the appearance of a copper jewelry (for example, a bracelet) is influenced by the well-being of the person who constantly wears it. However, this is most likely due to the fact that in the external environment with which such a product is constantly in contact, humidity, pressure and temperature are constantly changing. Meanwhile, many adherents of alternative medicine recommend wearing bracelets made of copper to people experiencing problems with the cardiovascular system.

Copper dishes, which even our distant ancestors began to use, are still held in high esteem by many housewives. Such popularity is explained by the fact that in cookware made of copper, which is characterized by high thermal conductivity, all prepared products are heated uniformly and in full, and such heating occurs in a short period of time. Meanwhile, with constant use, dishes from this metal quickly lose their external attractiveness: it becomes coated with oxide, dims, darkens and loses its original shine.

If you do not clean it, it will release toxic substances, respectively, it will not be possible to use it for cooking. In the event that it is not possible to clean such dishes by all known means, it is better not to use it for its intended purpose, so as not to harm your health. It should also be borne in mind that dishes with black or with green spots of oxide on the surface look unpresentable, so it will not decorate your kitchen.

Effective Cleaning Methods

There are many proven methods that allow you to clean copper products even at home. Get to know the most effective ones.

Method No. 1

One of the most affordable household cleaning products for cleaning items made of copper is regular tomato ketchup. In order to clean copper with such a tool, it is simply applied to the surface to be treated and left on it for 1-2 minutes. After such exposure, ketchup is washed off with a stream of warm water. As a result of this procedure, the original gloss and color brightness will return to the copper product.

Method No. 2

To clean objects from copper, if they are not very dirty, at home you can use a regular dishwashing gel. To do this, use a soft sponge on which a detergent is applied. Wash it off under a stream of warm water.

Method 3

This cleaning method is used if it is necessary to clean a large copper product that cannot be placed in any container. The surface of such an item is wiped with half a lemon. To enhance the effect of lemon juice on copper, you can clean it with a bristle brush with sufficient elasticity.

Method 4

To give the former shine to copper helps a tool such as "vinegar dough." Prepare it as follows. In a special container, wheat flour and vinegar are mixed in the same proportion, bringing the resulting mass to a homogeneous state. Then the dough is applied to an object made of copper and allowed to dry completely. The crust formed after the mixture has dried is carefully removed, and the copper surface is polished to a shine with a piece of soft tissue.

Method No. 5

There is a radical and effective method for cleaning products made from copper, which is used if their surface is very dirty and could not be cleaned with other means.

Vinegar is poured into a specially prepared stainless steel container, which is mixed with a small amount of table salt.
The cleaned object is placed in the resulting solution and the container is placed on fire.
After the cleaning solution has reached a boil, the fire under the container is turned off and left on the stove until it cools completely.
After cooling the solution, the product to be cleaned is removed, washed under a stream of warm water and wiped dry.

If you clean copper using any of the above methods, strictly adhere to safety rules, carry out all work with protective gloves, and always wear a respirator when working with acetic acid.

Cleaning coins from copper

Coins made of copper are no longer available in our time, and many of these products, which are in the hands of the population, are of antique value. That is why the question of how to efficiently and at the same time carefully clean such coins is quite relevant.

There are several ways to restore its former appeal to copper coins. The choice of each of them depends on the nature and degree of pollution. So, depending on what color the plaque formed on the surface of an old copper coin, you can clean it using one of the following methods.

If there is a yellowish coating on the surface of the coin (this indicates that it was in contact with the product from lead), then it should be cleaned with a 9% vinegar solution.
A pronounced green plaque is cleaned with a 10% citric acid solution.
Coins made from copper may also have a reddish coating. They clean such a coin by lowering it in a 5 percent solution of ammonia or in ammonium carbonate.

In modern everyday life, a huge number of copper products are presented, which, over time, under the influence of various kinds of factors, become dark and even become somewhat cloudy. Learn from this article how to clean copper without damaging the structure of the entire product.

As you know, copper products have long been recognized by connoisseurs as high-quality and reliable things. Based on a copper alloy:

dishes;
jewelry;
decor items;
electronics details
coins;
figurines.

All these products not only look elegant, but are also quite durable in use. Despite their luxurious appearance, many copper items have a positive effect on human health. So, people with pronounced heart and vascular diseases are recommended to wear bracelets made of copper alloys. In this case, the process of normalizing blood pressure and improving well-being are often observed.

Basic cleaning methods

Despite the positive aspects of using copper products, dark or green deposits may appear on them over time, resulting in a loss of gloss. To return the copper product to its original appearance, you can use some of the secrets of cleaning it at home.

Method number 1

In order to clean your favorite copper product, you need to take a small container with hot water, add a little any cleaning agent and dip a sponge or soft rag into the solution. Then, with this sponge, gently rub the copper product, and then lower it into another container with clean water. In such a simple way, you can save a copper product from minor contaminants.

Method number 2

To clean a copper item at home, freshly squeezed lemon juice is perfect. They need to grate a copper product, and then rinse with warm water.

Method number 3

Copper can be cleaned using ordinary tomato ketchup. Squeeze the required amount of ketchup into a deep bowl and dip the copper product into it. Hold for about ten minutes, then remove and rinse thoroughly in warm water. A copper item will look new.

Method number 4

If a dark spot appears on your favorite household item made of copper alloy, dip it in a weak vinegar solution, where two tablespoons of table salt have previously been dissolved. Then put the container with the product in vinegar solution on the fire and boil for ten minutes. Under the action of acetic acid and hanging temperature, the process of dissolution of the oxides that appear on copper will begin. Then remove the product and let it cool. After that, dip it for a while in clean water, and then wipe it dry with a soft cloth.

Use the above methods of cleaning copper products should after preliminary testing of the method on a small surface of the product in order to identify the nature of the reaction of the metal to the cleaning agent. If no changes occur as a result, you can safely clean the product further.

How to clean copper coins at home?

In order to clean copper coins from long-term pollution and oxides, you can use the following methods.

Method number 1

If a yellow coating began to form on the surface of copper coins, most likely the copper began to come into contact with closely lying lead. You can clear coins from such a plaque by simply immersing in a ten percent solution of acetic acid. You can cook it yourself by simply mixing one part of acetic acid with nine equal parts of pure water. After dissolving the plaque, the coins should be removed and washed with warm water.

Method number 2

If a reddish coating appears on your copper coins, you can get rid of it with ammonia. Cleaning is as follows: the coins are dipped in a pre-prepared ammonia solution (ammonia solution) of a five percent concentration. After some time, reddening of the solution due to the dissolution of the reddish plaque can be observed. Sometimes you need to leave the product in such a solution for several hours to return them to their original appearance. After this, the coins must be washed with clean water and wiped dry.

Method number 3

If on a copper coin, as a result of long-term storage at home, a greenish coating begins to appear, you can clean it as follows: pour one tenth of citric acid into a glass and pour water at room temperature to the edges of the glass. In the resulting solution, you need to put your coins and observe what is happening. Under the influence of an acidic environment, a greenish coating will begin to move away from the walls of the coin and stain the entire solution in the corresponding color. As soon as the entire plaque has departed from the copper coin, it must be removed from the glass and rinsed well in warm water. Then it is advisable to polish the coin a little to give it a sparkling appearance.

Glowing copper products

Often, ordinary people are interested in the banal problem of cleaning copper to give it its original shine. Here are some effective ways in which you can achieve the desired result.

Method number 1

To give the copper objects a sparkling shine, they need to be rubbed with a mixture consisting of equal proportions of flour, sodium chloride and vinegar essence. After that, the cleaned copper objects should be washed well with running water and wiped dry.

Method number 2

You can restore the luster of copper objects with the help of an ordinary black and white newspaper. Roll it into a small lump and polish it with a tarnished product. Everything will shine again!