What is the difference between alum and alum, and what is the difference between alum and alum

There is no difference between alum and alum, just the pronouns are different.

Alum is also known as alum, potassium aluminum sulfate dodecahydrate. Alum has a certain toxicity, but also has antibacterial effects, can be used in medicine, there is no difference between the two, because alum is the so-called alum.

Related information: Alum can also be used to make aluminum salt, baking powder, paint, tanning, papermaking, waterproof materials, etc., and can also be used in food additives. Like some of the pure water that people usually drink, or when cooking food, like when people fry fritters, there is alum.

So we don't have to worry too much about alum and alum.

The same. Alum is also called alum, and alum is the scientific name of alum. They are the same substance in their own right.

Potassium aluminum sulfate dodecahydrate, also known as: alum, alum, potassium alum, potassium alum, potassium alum, the state has banned its use in food additives, is a double salt of potassium sulfate and aluminum sulfate containing crystal water.

Colorless cubic crystals, the appearance is often octahedral, or with the cube, rhombic dodecahedron to form a polymorphic shape, sometimes attached to the container wall and resembling a hexagonal plate, belonging to the type alum double salt, with glass luster. Density, melting point. 9 molecules of crystal water are lost, and 12 molecules of crystal water are lost at 200, which are soluble in water and insoluble in ethanol.

Alum and alum are no different, they are just pronouns. Generally refers to potassium aluminum sulfate dodecahydrate.

Alum is a double salt of potassium sulfate and aluminum sulfate containing crystalline water, with the chemical formula kal(SO4)2·12H2O, its aqueous solution is acidic, and it is hydrolyzed in water to form aluminum hydroxide colloidal precipitate. It belongs to mineral Chinese medicine. Microscopic Identification Transmission Polarizer:

Colorless translucent sells concisely. negative protrusions; The refractive index n=. Homogenizers.

Character identification: The product is irregular crystalline block. Colorless or white.

Transparent or translucent, glassy luster. The surface is slightly smooth or uneven, with fine longitudinal ridges and white fine powder. Hard and brittle, easy to smash.

The gas is slight, the taste is slightly sweet and extremely astringent. It is better to have a large, colorless bridge pants, transparent, and no impurities.

Applications in the industrial sector:

1. Fire extinguishing agent

The foam fire extinguisher contains about 1 mol of alum solution and about 1 mol of NaHCO3 (preparation baking soda) solution (and foaming agent), and the volume ratio of the two solutions is about 11:2. The purpose of excessive alum is to make the baking soda in the fire extinguisher fully react and release a sufficient amount of carbon dioxide to achieve the purpose of extinguishing the fire.

2. Buffer

It can be used as a buffer in sulfate galvanizing to stabilize the pH value of the plating solution. Potassium aluminum sulfate is used for sulfate galvanizing, brush galvanizing and chemical oxidation of magnesium alloy, and can also be used as a coagulant for the treatment of sewage.

There is no difference between alum and alum, and alum is also known as alum. Alum, also called alum, is a kind of alum stone refining, and it is also a commonly used traditional Chinese medicine. Chemically speaking, its composition is mainly potassium aluminum sulfate dodecahydrate, alum can be used as a water purifier in ordinary life, and can also be used as an additive for the production of fritters, vermicelli, and rice noodles.

Characteristics of alumThe surface of alum is often octahedral, or polyformed with cube and prismatic dodecahedron, and sometimes it is attached to the inner wall of the vessel and shapes nearly hexagonal plates, which belongs to the edible alkali double salt, and has the gloss of laminated glass.

Relative density, melting point. 9 molecular structure crystal water is lost, 200 molecular structure crystal water is lost, dissolved water, alcohol is not dissolved.

The above content reference: Encyclopedia - potassium aluminum sulfate dodecahydrate.