Can baking soda get rid of black rust? Which is highly commented on the Internet.
However, on a video platform recently, the baking soda has become a "net red". In the video, baking soda out of the kitchen, doing other things: in addition to rust, descaling, cleaning the washing machine, through the sewer, whitening teeth, remove the stains in the toilet ... can be described as 18 martial arts proficient. But is baking soda really so amazing?
Can remove rust and scale? The composition of the two does not react with the base at all.
Sodium bicarbonate, also known as sodium bicarbonate, is an acid salt. It is an acid salt with a chemical formula of NaHCO3. It is weakly alkaline after being mixed with water. It is a crystalline white solid, but usually shows a fine powder with a slightly salty Alkaline taste.
For the net pass baking soda can be used to remove scale and urinary scale, a professional who asked not to be named told reporters that because the scale components are calcium carbonate, magnesium carbonate, calcium sulfate, magnesium sulfate, calcium chloride, magnesium chloride. The urinary scale on the toilet is some salt, such as carbonate, phosphate, ammonium salt, etc., these components will not react with the alkali, only the acid can remove them, so baking soda can not be used to remove scale, Urine scale.
In addition to not being able to remove scale and urinary scale, it is not scientific to say that baking soda + white vinegar can remove rust. The composition of rust is iron oxide, and iron oxide does not react with alkali, so baking soda cannot remove rust. Although acetic acid can slowly dissolve rust, the concentration of acetic acid in white vinegar is only 3% to 5%, and there is basically no rust removal effect. Using baking soda and white vinegar to remove rust from the scissors will not only make the scissors dull, but if the cleaning is not clean, the residual salt will accelerate the rust of the scissors.
So what is the correct way to remove rust? Commonly used methods for removing rust can be divided into physical methods and chemical methods. The physical method mainly uses sanding to remove rust, such as sandpaper, grinding wheel, wire brush, steel ball, etc. The chemical method mainly uses the chemical reaction between acid and rust to achieve the purpose of rust removal. The main components of rust removers commonly found in life are hydrochloric acid and dilute sulfuric acid, which can react with iron oxide. The principle is that the rust removing agent penetrates into the surface of the steel product along the cracks of the rust layer and the impurity layer, and dissolves and peels off the rust layer and the impurity layer, thereby causing the rust layer, the impurities and the scale to fall off from the surface of the steel product. However, acid is corrosive, so it is necessary to wear protective clothing when removing rust.
Can you go to blackheads and whiten your teeth? Listening to rumors, being careful and becoming beautiful, not hurting
Blackheads, also known as blackheads, are caused by sebaceous glands secreting too much sebum, which accumulates in the ducts, blocks and hardens, and then oxidizes and darkens in the air.
There are rumors that only a small amount of baking soda powder is dissolved in water at a ratio of about 1:10, and it is applied to the nose with a cotton pad or cotton ball. After 10 minutes, the blackheads are all floated out.
In this regard, the online explanation is: "Salted soda is weakly alkaline after being dissolved in water. Under alkaline conditions, the main components of blackheads will undergo saponification reaction, producing glycerol and fatty acid salts, water soluble in glycerol and fatty acid salts. The sex is better, so it can achieve the effect of blackheading."
But according to reports, this saponification reaction is relatively slow, and its speed has a great relationship with the alkali strength and reaction temperature. If it is room temperature, under the weak alkaline conditions such as baking soda, even if it is not completely unreactive, it will take a long time to wait for the reaction to complete, and it will not happen for ten minutes.
In this regard, Zhou Ping, the chief physician of the Department of Dermatology and Venereology, also clearly stated to reporters: "It is unscientific to treat blackheads with baking soda. It is unscientific!" Baking soda will be very irritating to the skin and cannot be used for blackhead removal. Zhou Ping told reporters that in medicine, baking soda is mainly used to treat acidosis, and it is intravenous. "No matter whether it is domestic or foreign, there is no clinical practice of baking soda."
In addition to blackheads, tooth yellow also annoyed the beauty of the people. Net pass baking soda has the effect of whitening teeth. In this regard, experts say that this is also unscientific.
The tooth yellow is divided into endogenous and exogenous. Exogenous tooth yellow is due to the habit of smoking, drinking tea, drinking coffee, or eating foods that are heavy in soy sauce, deep in color, and easy to dye. The teeth will accumulate some pigment in the process. Endogenous deciduous yellow is caused by certain elements and occurs in the tooth tissue.
For endogenous tooth yellow, it is useless to do tooth cleaning and sand blasting. Ultrasonic cleaning can not solve the problem, baking soda can not solve. Exogenous tooth yellow is caused by living habits. Baking soda can't react with the pigments deposited, it can only play a frictional role, and can't solve the problem of tooth yellow.
For exogenous tooth yellow, regular tooth cleaning and polishing can remove it and restore the whiteness of the teeth. If the teeth are yellow in color, the teeth can't be cleaned, and the whitening and permanent porcelain veneers can be used to improve the yellowing state.
Although some studies have shown that toothpaste containing sodium bicarbonate has better whitening and plaque removal effects than toothpaste without sodium bicarbonate. But that doesn't mean you can brush your teeth directly with baking soda. Experts say that baking soda itself is an alkaline substance. If you use baking soda for a long time, it will destroy the environment inside the tooth and cause corrosion to the tooth itself.
So what can baking soda do? Widely used in food and pharmaceutical industries
Although the above-mentioned work can not do the baking soda, it does have many uses, mainly as food additives and antacids, and is widely used in the food and pharmaceutical industries.
The most common use of baking soda is the kitchen – used as a leavening agent for baking. When it reacts with the acid, carbon dioxide is released, causing the batter to swell. You can make crepes, cakes, quick bread, soda bread and fried foods. However, in the absence of acid, the thermal decomposition of sodium bicarbonate produces sodium carbonate, which is strongly alkaline and produces a bitter, soapy, and yellowish appearance to the baked product.
In recent years, baking soda has been used as a feed additive (buffering agent) for livestock and poultry abroad. As a feed additive for ruminants, baking soda can buffer the rumen, neutralize the acidity of silage and the organic acid produced by microbial fermentation in the stomach, keep the environment in the rumen neutral, and provide a good growth for microorganisms. The environment is conducive to the digestion of cellulose and other sugars. Tests have shown that cows fed with baking soda have a milking peak that comes early and maintains high yield throughout the lactation period.
Sodium bicarbonate releases carbon dioxide when heated, so it can be used to extinguish fires, but it is not suitable for extinguishing open flames in oil pans because the sudden release of gas can cause grease to splash. Baking soda can also come in handy when unwanted acid solutions or acids are leaking from neutralizing chemical laboratories.
Medically, sodium bicarbonate mixed with water can be used as an antacid to treat acid dyspepsia and heartburn; it can alleviate or reduce the gastric irritation caused by oral aspirin; it can also be blended with an appropriate amount of water to make baking soda into Paste is applied to the skin to relieve some insect bites and accompanying swelling.
In addition, according to the public literature, sodium bicarbonate also has weak disinfection performance, is an effective method to control the growth of fungi, and is registered as a bio-pesticide by the US Environmental Protection Agency, which can be applied to hydrotherapy ponds and garden ponds to increase its total alkali. degree.