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alum    音标拼音: ['æləm] [əl'ʌm]
n. 明矾

明矾

alum
n 1: a white crystalline double sulfate of aluminum: the
ammonium double sulfate of aluminum [synonym: {alum}, {ammonia
alum}, {ammonium alum}]
2: a white crystalline double sulfate of aluminum: the potassium
double sulfate of aluminum [synonym: {alum}, {potassium alum},
{potash alum}]
3: a person who has received a degree from a school (high school
or college or university) [synonym: {alumnus}, {alumna}, {alum},
{graduate}, {grad}]
4: a double sulphate of aluminum and potassium that is used as
an astringent (among other things)


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  • Alum - Wikipedia
    Crystal of potassium alum, KAl(SO 4) 2 ·12H 2 O An alum ( ˈ æ l ə m ) is a type of chemical compound, usually a hydrated double sulfate salt of aluminium with the general formula X Al(SO 4) 2 ·12 H 2 O, such that X is a monovalent cation such as potassium or ammonium [1] By itself, "alum" often refers to potassium alum, with the
  • 13 Surprising Alum Powder Uses and Benefits - The Good Human
    Today, alum is primarily used only as an additive to food, cosmetics, medicine, and more It is a readily available ingredient and a fantastic product And the best part? It has various health benefits and uses and it does not cost much! Read on to find out the top alum powder uses
  • Alum | Definition, Uses, Formula, Facts | Britannica
    alum, any of a group of hydrated double salts, usually consisting of aluminum sulfate, water of hydration, and the sulfate of another element A whole series of hydrated double salts results from the hydration of the sulfate of a singly charged cation (e g , K +) and the sulfate of any one of a number of triply charged cations (e g , Al 3+)
  • What is Alum | About Alum and Alum Substitutions - McCormick
    Alum, also known as potassium aluminum sulfate, is a naturally occurring mineral compound used across cultures and industries in various ways The most common type of alum found in kitchen pantries is potassium alum
  • ALUM Definition Meaning - Merriam-Webster
    The meaning of ALUM is a potassium aluminum sulfate KAl(SO4)2·12H2O or an ammonium aluminum sulfate NH4Al(SO4)2·12H2O used especially for its astringent and styptic properties How to use alum in a sentence
  • Alum for skin: Uses, benefits, safety, and more - Medical News Today
    Alum is a compound that contains aluminum People use alum for the skin to reduce sweating, and to treat shaving irritation or cuts
  • Alum: Chemical Formula, Properties, Uses of Alum ,Alum-water Treatment.
    Alum is a class of chemical compounds known as double sulfates that typically contain aluminum, a monovalent cation (such as potassium, sodium, or ammonium), and another trivalent metal (like iron or chromium)
  • Alum: Properties, Types, Amazing Applications - Science Info
    Alum is an inorganic compound consisting of water molecules, aluminum, other metals besides aluminum, and sulfates Alum, in its hydrated state, is classified as a double salt There are various forms of alum, including Potash Alum, Soda Alum, Ammonium Alum, and Chrome Alum
  • What Is Alum? - BYJUS
    Alum is an inorganic chemical compound that is generally made up of water molecules, aluminium or other metals and sulphates Alum is basically a hydrated double sulphate salt of aluminium The general chemical formula for alum is XAl (SO 4) 2 ·12H 2 O Alums can occur as minerals For example, alunite and leucite





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