What is the difference between edible alkali and industrial alkali?

Edible alkali refers to soda ash (sodium carbonate) (chemical formula Na2CO3) and baking soda (sodium bicarbonate) (chemical formula NaHCO3), which are different from industrial alkalis, baking soda is a product made by absorbing carbon dioxide from a solution or crystalline of soda ash.

Industrial alkali is widely used, in chemical experiments, in addition to being used as a reagent, because it has strong hygroscopicity, it can also be used as an alkaline desiccant. Caustic soda is widely used in the national economy, and caustic soda is required in many industrial sectors. The largest use of caustic soda is in the manufacture of chemicals, followed by paper, aluminum, tungsten, rayon, rayon and soap.

In addition, a large amount of caustic soda is also used in the production of dyes, plastics, pharmaceuticals and organic intermediates, the regeneration of old rubber, the electrolysis of metal sodium and water, and the production of inorganic salts, and the production of borax, chromium salts, manganates, phosphates, etc.

The purpose is different, and that's the biggest difference between them.

The differences between edible alkali and industrial alkali are as follows:

1.Different purity: edible alkali refers to the NAOH content and impurity content that meet the specifications of the national standard GB5175-2008 for food additives NAOH; However, industrial alkalis do not meet this standard.

2.Different uses: edible alkali is mainly used in food production and processing, while industrial alkali is widely used in water treatment, sewage treatment, etc.

3.The packaging and labelling are different: edible alkalis are packaged in a compact packaging, while industrial alkalis do not have such requirements. In addition, edible alkali needs to be marked with the words "food additives" and specification number on the packaging, while industrial alkali does not.

4.The biochemistry and heavy metal exceeding index values are different: the biochemical and heavy metal exceeding index values of edible alkali are more stringent.

In short, there are obvious differences between edible alkali and industrial alkali in terms of purity, use, packaging and labeling, biochemistry, and heavy metal exceeding index values.

Edible alkali generally refers to sodium carbonate, and industrial alkali generally refers to three alkalis: (sodium carbonate) and industrial caustic soda (sodium hydroxide.

Industrial heavy alkali (sodium bicarbonate).

Edible alkali, also known as face alkali and sodium carbonate, is a carbonate that hydrolyzes alkaline water-containing crystalline water with a chemical composition of Na2CO3.

Baking soda, also known as sodium bicarbonate and acid sodium carbonate, or NAHCO3, is a white alkaline drug with a salty taste. In addition to diet, it is also widely used in the medical field.

One is sodium carbonate and the other is sodium bicarbonate, and these two are certainly different, but they are often confused in everyday life, but fortunately they work basically the same. Generally, it is industrial alkali that has a burning sensation in the hand, and you can pour a glass of water, if it is dissolved, there are impurities, and it is absolutely not edible.

Since industrial alkali** is lower than edible alkali, unscrupulous traders often use industrial alkali containing a large number of harmful impurities to the human body to pass off as edible alkali, so I recommend you to use baking soda. When making dough and cooking porridge, the functions of these two are basically the same. However, when cooking porridge, their alkaline effect will destroy B vitamins, and it is best not to use them at all.

Edible alkali is solid, round, white in color, and easily soluble in water. Alkali is not a commonly used condiment, it is just a kind of food loosening agent and meat tenderizer, which can make the dry raw materials rise rapidly, soften the fiber, remove the sour taste of the dough, and the appropriate use can bring excellent color, aroma, taste and shape to the food, so as to enhance people's appetite. Edible alkali is widely used in food processing such as noodles, bread, steamed bread, etc.

Edible soda is a mixture of soda ash (sodium carbonate) (chemical formula Na2CO3) and baking soda (sodium bicarbonate) (chemical formula NaHCO3), baking soda is a product made by absorbing carbon dioxide from a solution or crystalline of soda ash.

Although industrial soda ash and edible soda ash are the classification of soda ash, in fact, there is a big difference between the two, first of all, the biggest difference is that the composition of the two is not completely consistent, industrial soda ash is only used in industry, and will not carry out fine processing of raw materials, so it contains a large number of harmful impurities in its composition, including organic impurities and lead, arsenic and other toxic and harmful metal impurities, and can not be used in food processing and daily consumption, and edible soda ash will go through a number of fine process filtration, processing, It can remove almost all impurities and harmful substances, and can be fully absorbed by the human body, so what we eat in our daily life is edible soda ash!

The difference is literally, one is added to food, and the other is added to industry. If you eat alkali, the purity and requirements are much higher** will be a little more expensive. There are many industrial grades, and there are all kinds of purities.

Generally speaking, edible alkali is soda ash.

But there is another alkali that can be used both industrially and edible, and it is also the purity to distinguish it - flake alkali.

The edible alkali harmful substances meet the food grade standard and the industrial alkali harmful substances exceed the food grade standard.

Generally, supermarkets sell basic edible alkali, industrial alkali, edible alkali must be similar, alkali purity, and impurities are the same.

1. Add a large amount of water, the industrial alkali that dissolves quickly and rises rapidly in temperature is the industrial alkali, and the other is edible alkali that dissolves slowly; 2. Edible alkali is bubbled with vinegar; 3. Flakes or crystals are industrial alkalis, and powders are edible alkalis.

Sodium hydroxide Naoh, potassium hydroxide KOH, barium hydroxide BA(OH), calcium hydroxide CA(OH), ammonia NH·HO

In the acid-base ionization theory, alkali refers to the fact that all the anions ionized in the aqueous solution are oh-; In acid-base proton theory, a base refers to a substance that can accept protons; In acid-base electron theory, a base refers to an electron donor.

Industrial alkali: industrial soda ash (sodium carbonate NA CO), industrial caustic soda (hydrovinyl sodium oxide NAOH), industrial heavy alkali (NAHCO). The purity and impurity content of industrial alkali (may contain heavy metals, etc.) meet the general industrial use, the process is relatively simple, and large-scale industrial production can be carried out, which is harmful to the human body.

Edible alkali: edible soda ash (sodium carbonate Na Co, the same molecular formula, but without the impurities of industrial soda ash) and edible baking soda (sodium bicarbonate NaHCO).