The role of boric acid water

Boric acid water is boric acid solution, which is a clear, colorless and odorless liquid. Generally, every 100 milliliters of soluble acid solution contains 4.25 grams of boric acid. It is often used as an external antibacterial drug in medicine. It can also be used in a cold and wet method to achieve the effects of anti-inflammatory, bactericidal and swelling. It has a certain astringent effect and can clear skin wounds. It is more suitable for secondary infections, erosive surfaces and dermatitis with excessive fluid infiltration.

The role of boric acid water

It is often used as a cold wet compress, which has anti-inflammatory, detumescent, antibacterial, astringent and wound cleaning effects. It is suitable for acute dermatitis and eczema with redness, swelling or erosion accompanied by secondary infection and excessive exudation. usage

Take 4 to 6 layers of gauze, soak them in the solution, and then use tweezers to gently wring them until no water drips. Apply the wet gauze to the affected area, and rewet the gauze every 5 minutes for about half an hour. 2 to 3 times a day.

Precautions

①The temperature of the solution used cannot be higher than room temperature. ②The moist gauze should be replaced regularly to maintain appropriate temperature, humidity and sterility. ③ When the skin lesions are large, especially when there is erosion, it is not suitable to use this medicine for wet compresses, so as to avoid toxic reactions such as vomiting, diarrhea, convulsions, lethargy, blindness and kidney damage caused by large-scale absorption of boric acid. It is advisable to use 1:8,000 potassium permanganate solution for wet compresses instead. When there is no infection on the lesion, you can apply normal saline solution for wet compress. ④ When the weather is cold, you should keep warm when applying wet compress.

Chemical formula H3BO3, colorless triclinic crystals or white powder with a slightly pearly luster, odorless, density 1.435g/cm3, melting point 149±1℃, boiling point 300℃. Boric acid can be obtained by decomposing boron magnesium ore with sulfuric acid, or by cooling and crystallizing a hot solution of sulfuric acid and borax.

Boric acid is slightly soluble in water, and its solubility increases with increasing temperature. Its solubility is 2.6 g at 0°C and 37 g at 107°C. It can be purified by recrystallization. When boric acid is heated to 169°C, it dehydrates and becomes metaboric acid (HBO2)n. When metaboric acid is heated again, it can be completely dehydrated to become glassy boron trioxide. Boric acid reacts with methanol or ethanol to easily generate volatile trimethyl borate or triethyl borate. The flame is a beautiful green when burning, which can be used to identify the presence of boric acid and its salts.