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Learn more about Bing search results hereThis summary was generated by AI from multiple online sources. Find the source links used for this summary under "Based on sources".
Learn more about Bing search results hereOrganizing and summarizing search results for youAlum is found in the following locations:- Nassau, Germany
- Rio Tinto, Spain
- Krísuvík, Iceland
- Southwestern United States
Alum is also used in various products such as baking powder, toothpaste, cosmetics, and fire extinguishers. In the past, it was commonly used as a mordant in the dye industry.
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Alum - Wikipedia
Pliny informs us that a form of alumen was found naturally in the earth, and terms it salsugoterrae. Pliny wrote that different substances were distinguished by the name of alumen, but they were all characterised by a certain degree of astringency, and were all employed for dyeing and medicine. See more
Many trivalent metals are capable of forming alums. The general form of an alum is XY(SO 4) 2·n H 2O, where X is an alkali metal or ammonium, Y is a trivalent metal, and n often is 12. The most important example is chrome alum, KCr(SO 4) 2·12 H … See more
Alum found at archaeological sites
The western desert of Egypt was a major source of alum substitutes in antiquity. These evaporites were mainly FeAl 2(SO 4) 4·22 H 2O, MgAl … See moreAluminium-based alums are named by the monovalent cation. Unlike the other alkali metals, lithium does not form alums; a fact attributed to the small size of its ion.
The most important alums are
• Potassium alum, KAl(SO 4) 2·12 H 2O, also called "potash … See moreAluminium-based alums have been used since antiquity, and are still important for many industrial processes. The most widely used alum is potassium alum. It has been used since … See more
Wikipedia text under CC-BY-SA license What Is Alum and How Is It Used? - ThoughtCo
- Potassium Alum: Potassium alum is also known as potash alum or tawas. It is aluminum potassium sulfate. This is the type of alum that you find in the grocery store for pickling. It is also used in...
- Soda Alum: Soda alum has the formula NaAl(S O4)2·12H2O. It is used in baking powder and as an acidulant in food.
- Potassium Alum: Potassium alum is also known as potash alum or tawas. It is aluminum potassium sulfate. This is the type of alum that you find in the grocery store for pickling. It is also used in...
- Soda Alum: Soda alum has the formula NaAl(S O4)2·12H2O. It is used in baking powder and as an acidulant in food.
- Ammonium Alum: Ammonium alum has the formula NH4Al(SO4)2·12H2O. Ammonium alum is used for many of the same purposes as potassium alum and soda alum. Ammonium alum finds applications in tanning, dye...
- Chrome Alum: Chrome alum or chromium alum has the formula KCr(S O4)2·12H2O. This deep violet compound is used in tanning and can be added to other alums to grow lavender or pur…
- Published: Nov 1, 2011
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What is Alum | About Alum and Alum Substitution
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, Uses, Formula, & Facts | Britannica
Alums occur naturally in various minerals. Potassium alum, for example, is found in the minerals kalinite, alunite, and leucite, which can be treated with sulfuric acid to obtain crystals of the …
13 Surprising Alum Powder Uses and Benefits - The …
Apr 5, 2024 · Alum is a granular powder or crystalline mass that is odorless, colorless, and transparent. It has a flavor that is both sweet and astringent. Its molecular weight is 458.28 grams per molecule. Egypt, Italy, England, …
Alum - Properties, Uses of Alum, Types, Water …
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 …
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Alum: Properties, Types, Amazing Applications
Aug 9, 2023 · Alum is typically found in the crystalline form, which is white and transparent. The boiling point of the substance is approximately 200°C. The melting point of the substance is recorded to be 92.5°C.
Alum - Formula, Types, Production, Properties, Uses
Mar 22, 2024 · Alums are normally found in the form of minerals. XAl(SO4) 2 ·12H2O is the general chemical formula of alum. Alum can be found in many forms, such as potash alum, …
Alums: Properties, Production and Uses
Apr 18, 2024 · Alum, recognized as a double salt of potassium and aluminum sulfates, was known among the ancient Greeks and Romans as both an astringent and a mordant for wool dyeing. It found diverse application, …
Alum History - Tees Valley Wildlife Trust
The Egyptians mined alum as a naturally occuring mineral in the oases of Dakhla and Kharga, in the desert west of the River Nile and the landscape is honeycombed with ancient mines. The Egyptians did not start to use alum …
Alum: Chemical Formula, Properties, Uses of Alum …
Alum refers to a class of chemical compounds known as double sulfates containing aluminum, along with a monovalent cation (like potassium, sodium, or ammonium), and another trivalent metal (like iron or chromium). The most …
Where does the US get its steel and aluminum from? | Reuters
Feb 10, 2025 · Roughly a quarter of all steel used in the United States is imported, the bulk of it from neighbours Mexico and Canada or close allies in Asia and Europe such as Japan, South …
Alum: Properties, Types, Production, and Uses - Testbook.com
Jul 31, 2023 · Alum is a term used to describe a range of compounds that are typically composed of sulphates, water molecules, and metals such as aluminium. Specifically, alum refers to a …
Resources: Alum Mines - Show Caves of the World
Alum is not found in nature in its pure form. It has been extracted from alum stone (alunite) since ancient times. It is found near active volcanoes or in desert areas, in humid climate it is …
Alum -Types, Properties, Water Treatment and Uses - Vedantu
Alum is an inorganic compound composed of Water molecules, Aluminum, other Metal than Aluminium, and Sulphates. Alum is a double salt in the hydrated form. Alum exists in different …
Where is Aluminum Found? Top 3 Global Aluminum Producers
May 18, 2024 · Journeying through the vast expanses of our planet, we find aluminum sources spread across various continents, each having its own story to tell. North America: land of the …
It's Elemental - The Element Aluminum - Thomas Jefferson …
About 8.2% of the earth's crust is composed of aluminum. Scientists suspected than an unknown metal existed in alum as early as 1787, but they did not have a way to extract it until 1825. …
What Is Alum and How Is It Used?
Jun 13, 2024 · Usually, when you hear about alum it is in reference to potassium alum, which is the hydrated form of potassium aluminum sulfate and has the chemical formula AlK(SO 4) 2 …
What Is Alum: Definition, Types, And Uses - mytutorsource.qa
Feb 16, 2022 · Potassium Alum is a hydrated state of Potassium Aluminum Sulfate (KAl (SO4)2·12H2O). In reality, any compound that has the empirical formula of AB (SO4)2·12H2O …
Alums – Types, Properties, Water Treatment and Uses - EMBIBE
Feb 15, 2025 · Have you ever thought about this stone-like appearing substance? The answer is ‘Alum’. Chemically alum is a special class of chemical compound having double sulphate salts. …
Alum - A Versatile Ingredient in Cooking and Baking
Alum, also known as potassium aluminum sulfate, is a chemical compound commonly used in food preparation and various household applications. In culinary contexts, it's primarily known …
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