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[Chemical Knowledge]：Sodium dihydrogen carbonate: multifunctional Joker

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Sodium dihydrogen carbonate is a colorless crystalline powder with the chemical formula NaHCO3, also known as baking soda. It is a common industrial chemical and food additive, which is widely used in the manufacture of bread, biscuits, candy and other foods. It can also be used to clean household products, eliminate odors, and neutralize acidic pollutants. Let's take a closer look at the properties and uses of sodium dihydrogen carbonate.

1. properties of sodium dihydrogen carbonate

1. appearance

sodium dihydrogen carbonate is colorless crystal powder, slightly alkaline taste.

2. chemical properties

sodium dihydrogen carbonate can be hydrolyzed to generate NaOH and CO2. Heating in air decomposes into sodium carbonate, water and carbon dioxide. Chemical stability, not volatile, not easy to absorb moisture.

3. physical properties

sodium dihydrogen carbonate density of 2.16g/cm3, melting point of 50-90 ℃, soluble in water, insoluble in alcohol, ether and other non-polar organic solvents.

2. sodium dihydrogen carbonate use

1. food additive

sodium dihydrogen carbonate can be used in baked goods, known as "baking powder", can stimulate cakes, bread and other baked goods expansion. At the same time, sodium dihydrogen carbonate can also be used as a neutralizing agent for acidic foods (such as yogurt) to regulate food taste.

2. Cleaning products

sodium dihydrogen carbonate can be used to clean household products, using its alkaline characteristics, can neutralize acidic pollutants, remove dirt on furniture, floors and other surfaces, and can also sterilize and deodorize.

3. Eliminate odor

sodium dihydrogen carbonate can be used to eliminate home odors, such as cleaning refrigerators, shoes, etc., using its adsorption and decomposition of odor characteristics, can effectively remove odors, so that the home environment is more fresh.

4.

in the field of medicine Sodium dihydrogen carbonate has a wide range of uses in the field of medicine, such as as an antidote for acidosis, a therapeutic agent for digestive system diseases, etc., and can also be used for tooth whitening.

3. Precautions

1. Sodium dihydrogen carbonate is an alkaline substance. When using, you should pay attention to avoid contact with sensitive parts such as skin and eyes.

2. sodium dihydrogen carbonate should not be mixed with acidic substances, otherwise it will react chemically and produce harmful gases.

3. Long-term exposure to sodium dihydrogen carbonate may cause allergic reactions and should be stopped in time.

In short, sodium dihydrogen carbonate is a very practical chemical substance with multiple uses and functions, and can effectively solve various problems in our lives and work. However, it is necessary to pay attention to relevant safety matters when using it to avoid adverse effects on health. If you need to use sodium dihydrogen carbonate, it is recommended to do it under the guidance of a professional.