Alum: meaning, definitions and examples
๐งช
alum
[ หรฆl.ษm ]
chemical compound
Alum is a chemical compound, typically a hydrated double sulfate salt, that contains a metal ion such as potassium or aluminum. It is often used in various applications, including water purification, food processing, and as a mordant in dyeing processes. Alums are also recognized for their astringent properties, which can be beneficial in medical practices. The chemical formula for the most common type of alum is KAl(SOโ)โยท12HโO, known as potassium alum.
Synonyms
aluminum sulfate, potassium aluminum sulfate, tartar emetic
Examples of usage
- Alum is used to purify drinking water.
- Potassium alum serves as a mordant in textile dyeing.
- In cooking, alum can be used as a food preservative.
- Some cosmetics contain alum for its astringent properties.
Translations
Translations of the word "alum" in other languages:
๐ต๐น alume
๐ฎ๐ณ เคธเคฒเฅเคซเฅเค
๐ฉ๐ช Alum
๐ฎ๐ฉ alum
๐บ๐ฆ ะฐะปัะผ
๐ต๐ฑ sรณl glinowa
๐ฏ๐ต ๆ็คฌ
๐ซ๐ท alun
๐ช๐ธ alumbre
๐น๐ท alรผminyum sรผlfat
๐ฐ๐ท ์๋ฃธ
๐ธ๐ฆ ุงูุฃููู
๐จ๐ฟ hlinitan
๐ธ๐ฐ hlinitan
๐จ๐ณ ๆ็พ
๐ธ๐ฎ aluminij
๐ฎ๐ธ alรบm
๐ฐ๐ฟ ะฐะปัะผ
๐ฌ๐ช แแแฃแแแแแก
๐ฆ๐ฟ alum
๐ฒ๐ฝ alumbre
Etymology
The term 'alum' originates from the Latin word 'alumen', meaning 'bitter salt' or 'to flow'. This itself can be traced back to the Greek word 'alumos', which refers to a type of salt with astringent properties. Historically, alums have been known since ancient times, with applications in various cultures for dyeing fabrics and as a food preservative. In medieval Europe, alum was highly valued for its use in textile dyeing, leading to the establishment of alum mines, particularly in Italy and England. The discovery and commercial production of alum contributed significantly to the textile industry during this period.