There are some verses in alum: First, they say that putting a small piece of alum in water can precipitate all the dross, so if we put a poem in our hearts, can we precipitate all yesterday's experiments? The pinyin is: míngfán n. The phonetic notation is: ㄇㄥㄈㄢ _. The structure is: Ming (left and right structure) alum (left and right structure). The part of speech is: noun.
What is the specific explanation of alum? We will introduce it to you in the following aspects:
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Alum míngfán n. (1) One of the two colorless or white isomorphic crystalline aluminum complex sulfates has the chemical formula of Kal (SO4) 2.12h2o, which has a slightly sweet and sour astringent taste, and is mainly used for medicine, taken orally as an emetic, and locally used as an astringent and hemostatic-also known as "potassium alum".
Second, cite and explain
1. Inorganic compounds, aqueous double salts of potassium sulfate and aluminum sulfate, colorless and transparent crystals. The aqueous solution has astringent taste. It can be used for making leather and paper, and can also be used as mordant and astringent in medicine. Usually used to clarify water. Quote Ming Shen Bang "Miscellaneous Notes of Wan Department under Funds": "Casting a palace and printing letters by various departments, each time using 25 Jin of charcoal and one Jin of alum."
Third, the Chinese dictionary
The aqueous sulfate double salt is composed of aluminum sulfate and sulfates of other elements. The most important alum in industry is potassium aluminum sulfate, which can be used to stop bleeding and act as an astringent; Ordinary alum can be used to make paint, matches, pigments, dyes, paper, leather and deodorant, and can be used to purify water and harden plaster of Paris.
Words about alum
alum
Idioms about alum
It's hard to know when it's dark, but it's hard to know when it's brilliant, but it's smart when it's peerless.
Words about alum
It's hard to know when it's dark, there's no fire, and there's no clear distinction between them.
2. The research model of thermodynamics and kinetics of alunite roasting process by thermal decomposition method is put forward.
3. Simply put, hydrate is a compound containing water molecules. Alum, gypsum and blue alum mentioned in middle school textbooks are the most famous hydrates.
4. This paper introduces a technological method of producing potassium alum by using the dilute acid leaching characteristics of alunite cooked ore powder, and briefly describes the technological process and test situation.
5. The experiment of extracting aluminum from alunite by alkali melting was carried out.
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