What is the concentration of hydrogen peroxide used for skin disinfection

Hydrogen peroxide, scientific name is hydrogen peroxide solution, medical 3, used for disinfection, non-toxic, high efficiency, but has a potential carcinogenic effect, medical not 30, the concentration is too large, with strong corrosiveness, can be bleached and bleached.

<>1. Hydrogen peroxide for medical supplies.

The concentration is generally three percent, which is used to clear wounds, loosen scabs, especially wounds infected by anaerobic bacteria;

2. The concentration of industrial hydrogen peroxide is generally about 35%, which is an important inorganic chemical product and an important oxidant and bleach agent in the industrial field.

Disinfectants and dechlorinants are widely used in textile, papermaking, chemical industry, light industry, medicine, electronics, food, environmental protection and other fields.

1. In 100ml of 15-18% sulfuric acid, under the cooling of ice, gradually add barium peroxide, and add the amount to maintain the weak acidity of the solution (about 40g). The hydrogen peroxide solution is obtained by pouring the upper solution. Extraction can be carried out if necessary.

Extract 4-5 times with 20ml each time. Evaporate the ether extract on a water bath (not higher than 40) to remove the ether and move the remainder to a dry sulfate bottle. 50% hydrogen peroxide solution can be prepared by this method.

2. Add 90g of sodium peroxide to 800ml of 20% sulfuric acid cooled with ice water in small amounts under strong stirring, and the temperature should be kept at no higher than 15. Left for 12 hours, the precipitated sodium sulfate decahydrate crystals were filtered out. The filtrate is placed in a grinding vacuum device (5-10 mm) and distilled at a bath temperature of 60-65 degrees Celsius (finally 85 °C), with a distillation volume of 100 ml each time.

with two receivers connected in series.

The second receiver should be ice cooled) to collect the distillate, the product in the first acceptor contains more than 20% hydrogen peroxide, and the second acceptor contains less than 3% hydrogen peroxide. The resulting hydrogen peroxide solution can be further concentrated in a concentrated sulfuric acid vacuum desiccator at room temperature, where the 25% solution can be concentrated to 88% after three days.

The dilute solution of hydrogen peroxide can also be condensed by freezing to achieve the purpose of concentration.

Abstract: Hydrogen peroxide is a solution of hydrogen peroxide and water, according to the amount of hydrogen peroxide, the concentration will be different, generally the concentration of hydrogen peroxide is equal to = the amount of hydrogen peroxide substance volume of hydrogen peroxide solution. The commonly used hydrogen peroxide disinfectant is generally medical hydrogen peroxide, its concentration is not higher than 3, if the concentration of hydrogen peroxide is higher than 8, it is a dangerous product, because high concentration hydrogen peroxide is the best strong oxidant and corrosive products, and the purchase needs to be filed in advance.

Let's take a look at what the concentration of hydrogen peroxide is in general. 1. How to calculate the concentration of hydrogen peroxide.

The concentration of hydrogen peroxide refers to the proportion of hydrogen peroxide to water, the general concentration unit is mol L, and the specific calculation method is: hydrogen peroxide concentration (c) = amount of hydrogen peroxide substance (n) volume of hydrogen peroxide solution (v).

2. What is the general concentration of hydrogen peroxide disinfectant?

Hydrogen peroxide is a solution formed by the miscible formation of hydrogen peroxide and Qingwang plum water, which has a certain disinfection and sterilization effect, so hydrogen peroxide is often used as a disinfectant in the medical field, so what is the general concentration of medical hydrogen peroxide?

The hydrogen peroxide disinfectant is generally medical hydrogen peroxide, in addition to medical treatment, the family can also be used to clean wounds, gargle, ears, etc., this hydrogen peroxide can be bought in ordinary pharmacies and hospitals, its concentration is generally not higher than 3, used for some special purposes, such as gargling, ear washing, etc., and the medical hydrogen peroxide disinfectant will be diluted before use.

3. The concentration of hydrogen peroxide is dangerous.

The concentration of medical hydrogen peroxide is generally not higher than 3, which will not cause harm, so it can be bought, but high-concentration hydrogen peroxide is generally dangerous, if the industrial field wants to use high-concentration hydrogen peroxide, it is necessary to record and obtain a purchase license before purchasing, because high-concentration hydrogen peroxide is a dangerous good. So how high is the concentration of hydrogen peroxide a dangerous product?

According to the provisions of the "Catalogue of Hazardous Chemicals", the concentration of hydrogen peroxide is more than 8 is a hazardous chemical, because the high concentration of hydrogen peroxide is a strong oxidant, although it is not combustible, but it can be compared with combustibles and should release a large amount of heat and oxygen to cause fire**, "Classification and Marking of Commonly Used Hazardous Chemicals" will be classified as a class I oxidant.

In addition, the danger category of hydrogen peroxide is also the 8th category of corrosive products, the high concentration of hydrogen peroxide is more corrosive, contact with the object, it will quickly corrode, the risk factor is high, so the purchase of high concentration hydrogen peroxide needs to be filed in advance.

The concentration of hydrogen peroxide for medical use is three percent.

Hydrogen peroxide, also known as hydrogen peroxide solution, its biggest role is to kill anaerobic bacteria, and the main cause of wound infection is anaerobic bacteria, such as tetanus. Medical hydrogen peroxide can kill intestinal pathogenic bacteria and pyococcus, and is generally used for surface disinfection. When it meets with wounds, pus, or silly filth on the oral cavity and mucous membranes, it immediately decomposes to oxygen.

This kind of oxygen atom that has not yet been combined into an oxygen molecule has a strong oxidation ability, and when it comes into contact with bacteria, it can destroy the bacteria and kill the bacteria.

Medical hydrogen peroxide concentration is equal to or less than 3%. Sakura rises open.

1. Function: When it meets with wounds, pus or dirt of the oral cavity and mucous membranes, it immediately decomposes to generate oxygen. This oxygen atom, which has not yet been combined into oxygen molecules, has a strong oxidizing ability, and when it comes into contact with bacteria, it can destroy the bacterial body and kill the bacteria.

2. Principle: Hydrogen peroxide has an oxidation effect, and it will decompose when it encounters dust and dirt on the fingers, and decompose to produce water and oxygen.

Medical hydrogen peroxide, that is, hydrogen peroxide, commonly known as hydrogen peroxide, is divided into three kinds of medical, military and industrial use, daily disinfection is medical hydrogen peroxide, medical hydrogen peroxide can kill intestinal pathogenic bacteria, pyococcus, generally used for surface disinfection.