Shelf life of potassium permanganate: how long does the diluted solution last, are there rules, how long can the crystals be kept dry, what labeling does the product have? Legal.Standard

How long does potassium permanganate last?

Potassium permanganate has an official name - potassium permanganate. According to the chemical composition, it is a potassium salt of manganese acid (KMnO4). The crystals are colored dark purple, almost black with a steely sheen; the solution ranges from light pink to dark crimson, depending on the concentration.

Potassium permanganate is a chemical used in medicine, therefore, in accordance with the legislation of the Russian Federation, a shelf life and expiration date are established for it.

Shelf life is the period of time during which, subject to all manufacturer requirements, the drug retains the qualities and properties declared during production.
Shelf life is the period of time after which the product becomes unsuitable for use. It can be indicated as a date (best before) or as a time period (best within) (Article 472 of the Civil Code of the Russian Federation).

Read more about the shelf life and storage of medications in a separate article.

If, after the established storage period, the quality indicators of the drug have not changed, then it is suitable for use until the expiration date.

The countdown of any duration of a medicinal product begins from the date of its production. This period of time includes:

the presence of the drug in the manufacturer’s warehouse;
transportation to the place of storage or sale;
stay in the warehouses of retail outlets.

Is the packaging properly labeled?

Potassium permanganate is a toxic substance with explosive properties. Due to the danger of possible fire, special requirements are imposed on its packaging and labeling, according to GOST 3885-73 “Reagents and Highly Pure Substances”:

The opacity of ampoules, test tubes or bags is ensured by the opacity of the material from which they are made. It is allowed to replace such packaging with transparent one, but only if it is wrapped in thick paper.
Each package must be affixed with a label with the manufacturer’s trademark, which must indicate:
name of the product and its chemical formula;
weight of powder in packaging;
batch number;
date of manufacture;
storage conditions;
warranty period of storage.
Labels must be made of durable material and be resistant to external influences. The label is glued to the plastic bag with glue or placed inside.

How long can manganese remain in crystals?

The maximum shelf life of potassium permanganate in crystals and powder is the same and is 5 years. During this period, the drug fully complies with the stated quality requirements, subject to the following conditions:

Store in a dry, dark place, away from light. Opaque packaging is required.
Maximum storage temperature + 250C.
The tube cap must be tightly closed.

The guaranteed shelf life of potassium permanganate, as stated by the manufacturers, is 3 years, subject to all storage conditions (GOST 20490-75).

How to understand the indicated expiration date of a medicine, read here.

Shelf life

The guaranteed shelf life of potassium permanganate for medical purposes according to GOST 20491 - 75 is 3 years. The substance intended for agricultural needs and other industries is stored for up to 1 year (GOST 57774 - 84).

The manufacturer's packaging usually indicates the expiration date of potassium permanganate in crystals or powder. According to the manufacturer, it is 5 years for use for medicinal purposes. Longer storage reduces the quality of the substance, as a result of which it partially loses its antiseptic properties, while becoming insoluble.

The shelf life of potassium permanganate solution (5%) is only 2 days from the moment of preparation. In this case, the specific time for which diluted potassium permanganate can be stored depends on its concentration and external temperature.

You can store the product in the form of a dry powder for the same amount of time as crystals.

Rules for keeping the powder dry at room temperature

Potassium permanganate crystals are chemicals that should be stored with the utmost care. At home, to maintain quality and medical properties, it is necessary to comply with the requirements indicated on the packaging.

Additionally, you should pay attention to the following prohibitions:

do not allow the drug to come into contact with dust;
do not expose to high temperatures;
Do not store near oils, fats, glycerin and phosphorus, as well as magnesium and aluminum to avoid explosion.

The storage place should be inaccessible to children, as the drug causes burns to the mucous membranes and skin.

Can potassium permanganate expire?

Potassium permanganate , more often referred to simply as potassium permanganate, is one of the most popular antimicrobial agents.

Its scope of application includes rinsing the nose and throat, and in case of food poisoning, gastric lavage, as well as treating wounds, burns and ulcers, and douching.

In addition to the medical field, potassium permanganate is also used for technical purposes, in particular in home farming or photography.

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Does potassium permanganate have an expiration date, what is it?

According to Russian legislation, all forms of medications have an expiration date , which means the period of their safe use and maximum effectiveness.

This also applies to medical potassium permanganate.

Does hydrogen peroxide have an expiration date? Read here.

For the medication, the standard that has been preserved from Soviet times is valid, namely GOST 20490-75 “Reagents. Potassium permanganate. TU" as amended in 2016.

According to this standard, the drug in crystals is guaranteed to retain its characteristics for a 3-year period from the date of release.

Responsibility for determining the shelf life rests with the manufacturer.

For the technical product, GOST 5777-84 is valid, defining a storage period of 1 year .

For metallic and nitrided manganese, GOST 6008-90 applies.

How long can it be stored?

The product in pharmacies is presented in the form of a crystalline powder, which, according to information from the manufacturers, is capable of maintaining its quality for 5 years .

The sale of the prepared solution has practically ceased today.

It is easy to prepare the solution yourself at the rate of 2-3 crystals per 20 ml of warm boiled water.

at home

The diluted pale pink solution is kept in a closed container , preferably glass, in a cool place away from the sun and heat sources.

You can find out what storage period paracetamol may have from here.

Thus, the best option is to place the solution in the refrigerator. Its use is recommended within 48 hours from the moment of preparation.

The container is then washed well with running water , but the use of detergents is not advisable.

fire hazard should be taken into account .

Also read in the next article about the timing of antiseptics such as iodine and brilliant green.

In this regard, it follows :

contain the powder only in closed glass ;
avoid exposure to sunlight ;
the storage place should be inaccessible to children due to the danger of the concentrate to the mucous membranes and skin;
protect from exposure to high temperatures ;
Avoid being in close proximity to oils and fats, as well as glycerin, sulfur and phosphorus due to the possibility of ignition and even detonation.

There is a high probability of an explosion when potassium permanganate comes into contact with active metals such as magnesium or aluminum.

How to identify a spoiled drug?

Long-term storage requires maintaining all of the above requirements.

Interaction with water or air negatively affects the preservation of the characteristics of the drug; it loses its oxidizing properties, and with them its usefulness as a medication.

Read about the expiration dates of Levomekol ointment here.

The depravity of potassium permanganate can be judged by the following signs :

if the solution has a crystalline precipitate due to the insolubility of some crystals in water;
acquisition of a 5% solution of a color other than crimson or pink ;

Most often, in this case, a red-brown tint is acquired, which does not comply with the instructions and standards.

When the crystals are completely dissolved in water and a solution with the required color is obtained, you can safely use it if necessary.

How to deal with delays?

If there are no signs of deterioration listed above, you can use potassium permanganate even after the expiration date stated by the manufacturer.

In this article you will learn about the maximum shelf life of activated carbon.

These indicators practically guarantee the safety of further use of the drug.

Today, with a huge selection of different products with antiseptic properties, many still prefer to use potassium permanganate due to its versatility and ease of preparation, as well as shelf life.

Source: https://zakonpotr.ru/srok-godnosti/margantsovki.html

How long should the diluted solution be stored?

A solution of potassium permanganate is not a drug with a long shelf life, since crystals diluted in water oxidize it and quickly lose their healing properties.

At room temperature. At room temperature, the drug retains its properties for 1-2 hours.
In a refrigerator. An aqueous solution of potassium permanganate, poured into a sealed container, does not lose its medicinal properties for 48 hours at a temperature of +2+60C. However, if flakes form at the bottom, the drug becomes unusable before the specified time has elapsed.

Potassium permanganate should only be diluted in glass containers. The use of metal utensils reduces the degree of oxidation of the solution and the drug becomes unusable within a few minutes.

Is it possible to use expired substances?

After three years from the date of production of the product, it is necessary to visually check its color. If the powder has retained its shade, then the medicinal properties of the drug have remained unchanged, and it can be used until the deadline.

After the expiration period, if potassium permanganate was stored in compliance with all requirements, it should be checked for suitability by preparing a solution. If the color of such a solution corresponds to the norm, and the crystals have completely dissolved, then such a preparation can be used, but only for household or economic purposes.

Is there any danger?

It is pointless to use a prepared solution of potassium permanganate, stored for more than 2 days, since the oxidation process in it is completed and the medicinal properties are lost.

It is strictly prohibited to use a solution of potassium permanganate prepared from crystals that have passed their expiration date for medical purposes! The use of such a drug causes burns, allergic reactions and poisoning.

Over time, the components of any drug enter into chemical reactions and change their properties. Do iodine, fish oil, castor oil, Suprastin, Linex, activated carbon, brilliant green, hydrogen peroxide, tetracycline ointment have an expiration date and how to store them correctly at home - read on our Internet portal.

Does dry potassium permanganate have an expiration date? What is the shelf life of potassium permanganate?

Potassium permanganate, better known as potassium permanganate, is probably in every first aid kit.
This is a well-known antiseptic used for burns and open wounds, and is also used as an emetic.

It is believed that the shelf life of potassium permanganate in a dry state is unlimited and it does not require special storage conditions. Is it really durable and under what conditions does it retain its medicinal properties?

General characteristics

This medicine is a dark purple crystalline powder. Upon contact with water it acquires a crimson hue. It is used for both medical and household purposes.

For rinsing the mouth during inflammatory processes.
For disinfection of abrasions, ulcers and burns.
For gastric lavage in case of poisoning and toxic infections.
As an antiseptic for hygienic care of the organs of vision and skin.
For gynecological and urological douching.
To assess water quality.
As a detergent to remove organic compounds such as fats.
When tinting photographs.
To determine the mass fraction of sugar in confectionery and bakery production.
Reagent for the determination of sucrose and potassium iodide.

Side effects and overdose

Potassium permanganate in some cases causes allergic reactions, and upon contact with the skin - redness and burns. Contraindicated for use in people with individual hypersensitivity to the drug.

An overdose when used orally is accompanied by sharp pain directed down the esophagus. The mucous membrane of the oral cavity turns red and swells noticeably. Swelling of the larynx may develop, which in turn leads to mechanical asphyxia.

With low acidity, methemoglobinemia is possible, which is accompanied by severe shortness of breath.

Symptoms of overdose are: hemorrhagic colitis, manifestations of Parkinson's disease, convulsions and increased muscle excitation, nephropathy and hepatopathy, burn shock.

Release form

It is mainly sold in pharmacies in powder form, packaged in glass jars or thick bags made of special paper. Sometimes you can find a larger crystalline substance.

Previously, a ready-made 5% solution was available for sale. But currently the production of liquid permanganate is prohibited.

Shelf life of potassium permanganate

The legislation of the Russian Federation establishes that all chemical compounds used for medical purposes have a certain shelf life, after which their further use is not recommended. And manganese is no exception.

Potassium permanganate, used for medical purposes, can be guaranteed to be stored for up to three years from the date of manufacture, according to GOST 20491-75. Technical product used in agriculture and other industries - up to one year in accordance with GOST 57774-84.

However, manufacturers indicate a shelf life on packaging with dry substances of five years. With longer use, the chemical loses its medicinal properties and becomes useless.

The main indicator is that it ceases to dissolve in water. If you managed to prepare a solution from a 25-year-old powder, you can safely use it.

The main thing is that its color is pinkish or crimson, and not red-brown.

Important! Crystals of the substance are stored as long as potassium permanganate in powder.

The solution has a limited shelf life. It is not recommended to prepare it “for the future.” The 5% solution is suitable for use within just two days from the date of manufacture.

Storage rules

Manganese dust has a toxic effect on the human body. Therefore, it is important to observe certain storage intervals for the drug.

The ideal storage location is a tightly sealed glass jar, left in a dark place, away from other active chemical compounds.

Using the drug after the expiration date

If you follow the storage rules, potassium permanganate can retain its properties for a long time. How can you be sure of its suitability?

It is important to know. Potassium permanganate crystals undissolved in water can cause burns when they come into contact with the mucous membrane and skin. Therefore, never use such a solution.

on this topic

Everyone probably has a purple powder in their medicine cabinet - potassium permanganate. With the help of potassium permanganate (this is the scientific name for the well-known potassium permanganate), which has antiseptic properties, you can solve many health problems. You just need to store it correctly.

Shelf life of potassium permanganate according to GOST

The storage standards for potassium permanganate, as a chemical reagent with the highest degree of purity and used for medical purposes, are provided by GOST 20490-75. This GOST requires the storage of potassium permanganate powder for three years.

For potassium permanganate, which is used for technical purposes (medical industry, agriculture, bleaching fiber materials), the shelf life is one year.

Shelf life of potassium permanganate powder

Today, many people use potassium permanganate in everyday life, which they inherited from their grandmother, believing that such a long shelf life did not in any way affect the properties of the powder. This is a common mistake, since the shelf life of potassium permanganate in powder form is 5 years. It is important to observe the temperature regime: no higher than 25 degrees Celsius.

Shelf life of potassium permanganate in solution

According to state standards, storing potassium permanganate in solution is not allowed. Moreover, to preserve the properties of the powder, it is important to protect it from moisture. Therefore, an aqueous solution of potassium permanganate should not be stored for a long time. It should be prepared when necessary, without leaving the drug “in reserve”.

Shelf life of potassium permanganate in crystals

Potassium permanganate in crystals should be stored with extreme caution. The shelf life of the crystals is equal to the shelf life of potassium permanganate powder.

Using potassium permanganate after the expiration date

To determine whether potassium permanganate can be used after the expiration date, you need to refer to the laws of chemistry. According to them, manganese during storage may lose its oxidizing properties when it interacts with the atmosphere. It turns out that if you were able to dissolve potassium permanganate powder in water, which is more than five years old, then you can use it without fear.

Storage of potassium permanganate

To understand that potassium permanganate has become unusable, you need to dissolve it. If the solution is not lilac-pink, but red-brown, then the drug’s shelf life has expired.
When using potassium permanganate, it is important to check that all granules have dissolved. Otherwise, you may get a serious burn.
Potassium manganese dust is dangerous to humans due to its toxicity. Also, when interacting with metals, permanganate can cause a strong explosion. When interacting with oils and fats of organic origin, potassium permanganate easily ignites. For these reasons, it is necessary to store potassium permanganate powder in a dark glass container, tightly closed.
The potassium permanganate solution should be discarded after use. Afterwards, the dishes should be washed under the tap, without using soap that contains fats and glycerin.
When storing a solution of potassium permanganate for a long time, a precipitate forms. After shaking, this solution will lose most of its beneficial properties.

Potassium permanganate is a unique remedy that will come to the rescue in various life situations, of course, with proper storage.

This drug is available in powder, and the shelf life of potassium permanganate is unlimited.

Applying a solution of potassium permanganate to the surface of the body can destroy any microbes on the skin. Only a fresh solution of potassium permanganate will have this property, while the old solution turns from crimson to brown and loses its oxidizing properties. That is why you should use only fresh solutions.

The concentrated solution and crystals can be used to cauterize, for example, calluses or warts. This will help remove them from the body. The fresh solution can also be used as a room deodorizer.

Potassium permanganate can be used to wash wounds, mouths, burns, stomach lavages, and in case of poisoning. For these purposes, use a solution in a concentration of 0.01 - 0.5%.

The solution can also be prepared by eye. To do this, it is enough to dissolve about a dozen crystals in a liter of water. It should be bright crimson; all crystals must dissolve, because if consumed, they can cause a burn.

Under no circumstances should potassium permanganate crystals come into contact with rapidly oxidizing organic substances, because not only a fire, but also an explosion can occur.

Of course, potassium permanganate has an unlimited shelf life, but it is better to use it only fresh, as it has no more beneficial properties.

Surely you have long been looking for the answer to the question - how long can potassium permanganate be stored? In this article we will try to tell you in as much detail as possible everything about the shelf life of potassium permanganate (potassium permanganate).

Standard shelf life for potassium permanganate

For potassium permanganate according to GOST. “Reagents. Potassium permanganate. Technical Specifications" establishes a standard shelf life of 3 years from the date of production. During the specified period of time, the reagent retains its chemical properties.

Storing potassium permanganate (potassium permanganate)

It's no secret that potassium permanganate is a unique remedy that can not only disinfect, but also treat skin infections. Of course, this is only possible if potassium permanganate is stored correctly.

Free legal advice:

Do not use potassium permanganate if its granules are not completely dissolved in water, otherwise you may get a serious burn.

It is best to store potassium permanganate in closed glass containers away from fire, oils, fats and metal, otherwise it can cause a fire and even an explosion.

How to store potassium permanganate powder

Potassium permanganate powder is the most common type of potassium permanganate, which we store at home, naively believing that its shelf life is endless. However, this is not the case.

The shelf life of potassium permanganate in powder is no more than 5 years, so if you have old stocks dating back to the times of the USSR, get rid of them as soon as possible.

Potassium permanganate should be stored in a dry and dark place at a temperature no higher than +20+25 degrees.

How to store potassium permanganate solution

Potassium permanganate solution is not a long-term storage drug. A solution of potassium permanganate, in order to exhibit all its properties and effectiveness, must always be fresh. Therefore, the shelf life of the potassium permanganate solution is no more than 48 hours.

Potassium permanganate should only be diluted in glass containers.

Free legal advice:

How to determine whether potassium permanganate is suitable for use? Very simple. If it has acquired a brown tint, then it’s time to get rid of it. Potassium permanganate in optimal condition has a pink (to crimson) tint.

How to store potassium permanganate crystals

Potassium permanganate crystals are among those chemicals that must be stored with the utmost care. The shelf life of potassium permanganate in crystals is the same as that of powder - 5 years from the date of manufacture.

Using expired potassium permanganate

Surely, many of you have stale potassium permanganate stored and therefore the question arises - is it possible to use it? Chemistry can answer this question. Based on its laws, you can find out that over time, potassium permanganate can lose its oxidizing properties. Dilute potassium permanganate in water; if the solution turns brown, it cannot be used.

Shelf life of potassium permanganate powder

Shelf life of potassium permanganate in crystals

Free legal advice:

Shelf life of potassium permanganate in solution