Can expired alcohol still be used, can expired alcohol still be used

Expired alcohol can not be used, expired alcohol has no original effect, 70%-75% of the alcohol and the osmotic pressure of bacteria is similar, can be gradually and continuously infiltrated into the inside of the bacteria before the protein on the surface of the bacteria is not denatured, so that all the proteins of the bacteria are dehydrated, denatured and coagulated, and finally kill the bacteria, but when the alcohol expires, its concentration will be lower than 70%, which will affect the sterilization ability, and cannot achieve the effect of killing bacteria, so it can not be used.

Expired medical alcohol can no longer be used, and the normal medical alcohol concentration is around 75%. At this time, alcohol can coagulate the proteins of bacteria and play a bactericidal role. However, expired medical alcohol cannot achieve the effect of killing bacteria in terms of concentration and other aspects, so it cannot be used.

70 -75% alcohol is similar to the osmotic pressure of bacteria, which can gradually and continuously infiltrate into the inside of the bacteria before the protein on the surface of the bacteria is not denatured, so that all the proteins of the bacteria are dehydrated, denatured and coagulated, and finally kill the bacteria, when the alcohol concentration is lower than 70%, due to the reduction of permeability, it will also affect the bactericidal ability. Therefore, the use of 70 -75 alcohol can not only make the proteins that make up the bacteria coagulate, but also do not form a thin film, so that the alcohol can continue to penetrate into the inside, and make it completely disinfected and sterilized. In this suitable range, the higher the concentration, the better the disinfection effect, so 75% has become the most commonly used concentration in hospitals at present.

Now alcohol has become a necessity in every household, some people buy a lot of alcohol at home, but not used up within the expiration date, these expired alcohol can indeed be used, and also has a certain disinfection effect, but the effect will be greatly reduced, and the longer the expiration time, the worse the effect.

If it is usually only used for disinfection on the **, it is better, but if it is to disinfect the wound and use expired alcohol, it may bring a series of adverse consequences.

Generally speaking, doctors do not recommend patients to use some expired alcohol, which not only cannot achieve the effect of disinfection, but also may cause secondary damage to the body.

Since expired alcohol can not be used on the human body, it is still possible to use expired alcohol to clean and disinfect when doing cleaning work, because as long as it is not used on the human body, it is still acceptable to use expired alcohol in the disinfection of some items, but for some places with high disinfection requirements, expired alcohol can not be used.

It is recommended that when you buy alcohol, you can buy it rationally according to your own needs, and don't store a lot of alcohol in a swarm, which will not only cause a waste of resources, but also once the expired alcohol is used, it may not achieve the effect of disinfection, and it is another harm to the body.

Storing alcohol is also a science, do not put alcohol under strong light for irradiation, and do not store alcohol in a transparent glass bottle or plastic bottle, which can easily lead to the volatilization of alcohol, thereby shortening the expiration date of alcohol.

Alcohol has a shelf life of two years, and the alcohol itself will not deteriorate and change the substance, so it will be stored for a longer time, but the alcohol after opening may shorten the storage time, and the longer it is placed, the worse the effect will be, and the alcohol should be kept away from flammable materials during storage.

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Alcohol that has passed the expiration date will generally reduce the concentration of alcohol due to volatilization, and it cannot achieve a good disinfection effect, so it is not recommended to use expired alcohol for disinfection; It can be used for emergency use when alcohol is not available, but the disinfection effect will be reduced. When storing alcohol, pay attention to seal it well, put it in a backlit, dry environment, and reduce volatilization as much as possible.

Uses of alcohol at different concentrations:

95% alcohol is commonly used to wipe UV lamps. This alcohol is commonly used in hospitals, but in the home it is only used for cleaning camera lenses;

75% alcohol is used for disinfection. This is because 95% alcohol will form a protective film on the surface of bacteria, which is difficult to completely kill bacteria;

40 to 50 percent alcohol prevents pressure sores. For example, when massaging, pour a little 40% to 50% alcohol into the hand and evenly massage the patient's pressure area, which can achieve the purpose of preventing the formation of pressure sores;

25% 50% alcohol can be used for physical depyretics. Patients with high fever can use it to rub their bodies, absorb and take away a large amount of heat with volatile properties, and relieve their symptoms.

Alcohol expires or alcohol, it doesn't turn into water, it doesn't turn into anything else. The liquor that I usually drink can actually be understood as alcohol with water, and the more I put it, the more expensive it becomes, and there will be no bacteria or viruses. **External scars are itchy, that's because the flesh is growing, and the peripheral nerves are growing, which is a normal phenomenon.

At this time, don't move and grasp, just endure it, just endure it.

It shouldn't be a big problem, after rubbing with alcohol, it will itch after a while. Don't pick. Otherwise, it will leave a scar.

It is best to use one that does not expire.

It's best not to use it. If it takes too long, the alcohol will evaporate, and the alcohol concentration will decrease and the disinfection effect will be lost.

Expired alcohol is mainly due to the fact that the ethanol in the alcohol volatilizes due to poor preservation, which reduces the concentration of ethanol and thus the alcohol cannot achieve its original effect! But you can use it for something else! For example, if you have a cold or fever, you can light the gua sha and poke the back, and you can clean the contacts on some electrical appliances!

Of course, if the concentration is going to be very low, I recommend not using it, or throwing it away!

The sterilization effect of expiration is not great, but there will be nothing ***.

It's nothing, if the wound is not deep, go buy a bottle of alcohol disinfection, erythromycin is antibacterial, and you can also do it. As long as you don't get infected, you'll be fine.

Obviously, this is a problem, of course don't use it! The alcohol often volatilizes at a time and the concentration does not reach the ...... of the disinfection effect

It's better not to use it, I hope it gets better soon.

Expired alcohol cannot be used, if the wound is not healed, please go to the hospital for a look.

Medical alcohol is usually a 75% aqueous solution of ethanol.

Anhydrous ethanol refers to ethanol with a concentration of more than 99% or unclean ethanol with a relatively simple preparation process and low cost. In medical cases, 75% of ethanol aqueous solution has the strongest disinfection ability, and the effect is not good beyond this range, while absolute ethanol forms a protective film outside the bacteria, and has almost no disinfection ability.

Medicinal alcohol is no better than methanol.

Expired alcohol cannot be used and expires within three months of opening.

Expired alcohol is not so good, and there is nothing to use it, but it is difficult to get better!

Expired alcohol has no bactericidal effect, because the alcohol volatilizes and the concentration cannot be reached.

Expiration is past the "expiration date" and is best discarded or used for other purposes. Rub some iodophor and see.

It's best to go to the hospital and get checked again.

Alcohol will volatilize after a long time and most of the rest is water.

You... It's miserable.

As usual, it's fine.

Sorry to bother me just passing through.

If the alcohol is expired, if the amount is not large, it can be used as a life wipe or physical antipyretic.

Medical alcohol expires and its concentration decreases, which will affect the ability to sterilize, but it will still have a certain disinfection effect, and can be used as a cleaning tool to wipe furniture, windows, desktops, sofas, railings, floors, etc.

Alcohol storage

The concentration of medical alcohol is 75%, and the concentration of expired medical alcohol will be reduced, but its properties will generally not change, so it can be used for physical antipyretic use by wiping the body of patients with high fever. However, it is best not to use expired ones for wound disinfection.

If the amount is relatively large, it can be handed over to the Food and Drug Administration for centralized destruction.

Unopened medical alcohol generally has a shelf life of two years; The expiration date after opening the bottle is generally one week. Pay attention to the tightness and storage location of medical alcohol when storing it, and the storage location should be stored according to what is written on the bottle. Medical alcohol has a shorter expiration date after opening the bottle.

In about a week, after opening, the alcohol in the bottle of medical alcohol will slowly evaporate, and the concentration will not reach the original concentration, which reduces the disinfection effect. If the medical alcohol is used by pouring it out, the storage time of the medical alcohol can be appropriately extended, but not more than one month.

If the alcohol expires, you can't continue to use it, because the expired alcohol will volatilize, and the concentration will also be reduced, and the use of this alcohol will be less effective. If expired alcohol is used to disinfect the wound, it will not only fail to disinfect, but may even cause wound infection, which will affect the speed of wound healing.

After the alcohol expires, the alcohol component will gradually volatilize, and the concentration will gradually decrease, and the sterilization and disinfection ability of this alcohol will be greatly reduced.

If expired alcohol is used to disinfect the wound, it will not only fail to kill bacteria and reduce inflammation, but may even cause some damage to the wound, and in severe cases, it will affect the speed of wound healing and lead to wound infection.

The shelf life of alcohol after continuous use after opening the bottle is generally not more than seven days, because frequent use of alcohol will accelerate the volatilization rate of alcohol, so if you want to prolong the use time of alcohol, you should reduce the frequency of use of cherry dust.