What Is the Connection Between Sodium Bicarbonate and Sulfuric Acid?

Sodium bicarbonate, chemical formula NaHCO, commonly known as baking soda. White fine crystals, less soluble in water than sodium carbonate. It is also an industrial chemical. Solids begin to decompose gradually at temperatures above 50 ° C, producing sodium carbonate, carbon dioxide and water, which completely decomposes at 270 ° C.

Chinese name: sodium bicarbonate

Chinese alias: heavy alkali; sodium bicarbonate; baking soda

English name: sodium hydrogencarbonate

English alias: Sodium hydrogenocarbonate; sobatum; Sodium Hydrogen Carbonate; sodium acid carbonate;

Sodium bicarbonate

CAS number: 144-55-8

Molecular formula: NaHCO ₃

Molecular weight: 84.00660

Exact mass: 83.98230

PSA: 60.36000 ^[1]

Sodium bicarbonate is white crystal or fine crystal of opaque monoclinic system. The specific gravity is 2.15. Odorless, non-toxic, salty, soluble in water, slightly soluble in ethanol. It is soluble in 10 parts of water at 25 ° C and 12 parts of water at about 18 ° C. Because of its aqueous solution

Different from industrial use

Method name: Sodium bicarbonateDetermination of sodium bicarbonate

Sodium bicarbonate can be directly used as raw material in the pharmaceutical industry for treatment

Store in a dry and ventilated indoor warehouse. Be careful not to break or loose the bag during transportation.

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Sodium bicarbonate rumor one: toothpaste and baking soda easily decontaminate

Baking soda, also called sodium bicarbonate, plays a pivotal role in many fields such as medicine, cleaning, food, beauty, and chemicals. According to legend, putting a little baking soda in toothpaste when brushing your teeth can quickly whiten your teeth. Is it true? We need to analyze and judge from the physical and chemical properties of baking soda itself ^[4] .

First, adding baking soda to toothpaste allows the baking soda particles to directly rub the teeth and help clean tartar. Second, baking soda has a slight corrosive effect, and it will show a weak alkaline environment when exposed to water. The environment for tartar growth is It is weakly acidic. Therefore, adding baking soda to toothpaste can destroy the environment of tartar growth and thus play a role in removing tartar ^[4] .

But there are several points worthy of our consideration.

First of all, the role that baking soda can play in many toothpastes on the market can also be achieved, the effect is not worse than baking soda, toothpaste + baking soda does not necessarily have the effect of 1 + 1 = 2, even because of the proportion or Other factors can cause adverse effects. Instead of making a special toothpaste with its own formula, it is better to believe the research results of regular toothpaste manufacturers ^[4] .

Secondly, I believe that everyone has realized that the whitening effect of teeth by ordinary brushing is not obvious. The whitening mechanism of baking soda is similar to toothpaste, which is helpful for cleaning tartar, but it has no obvious effect on the pigments that are deeply attached to the tooth surface. There is no way to talk about whitening. Some methods that can quickly achieve whitening include cold light whitening and tooth bleaching. The mechanism used is completely different from baking soda. They use high-intensity light of a specific wavelength to trigger the production of free radicals and redox pigment molecules. In order to achieve rapid whitening ^[4] .

In this way, it seems that it is difficult to achieve satisfactory results simply by using baking soda to remove tartar for rapid tooth whitening. Friends who want to whiten teeth should go to a regular dental hospital instead of relying only on some so-called folk remedies ^[4] .

Sodium bicarbonate rumor 2: baking soda can remove rust and scale

Baking soda is sodium bicarbonate, which is an acid salt. It is weakly alkaline after being mixed with water. It is a crystalline white solid, but usually appears as a fine powder with a slightly alkaline taste ^[5] .

Because the components of scale are calcium carbonate, magnesium carbonate, magnesium hydroxide, etc., these components will not react with alkali, only acid can remove them, so baking soda cannot be used to remove scale.

In addition, the claim that baking soda + white vinegar can remove rust is not scientific. The composition of rust is iron oxide. 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% -5%, which basically has no rust removal effect ^[5] .