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chemeurope.com's Encyclopedia of Chemistry provides articles for 64,557 entries from chemistry, pharmaceutics and material sciences as well as related scientific disciplines.

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History of saffron fresco from the excavation of Akrotiri on the Aegean island of Santorini . The history of saffron in human cultivation and use reaches back more than 3,000 years. and spans many cultures, continents, and civilizations. Saffron , a spice derived from the dried stigmas of t more

Aldol reaction

Aldol reaction The aldol reaction is an important carbon-carbon bond formation reaction in organic chemistry . In its usual form, it involves the nucleophilic addition of a ketone enolate to an aldehyde to form a β-hydroxy ketone, or "aldol" (aldehyde + alcohol), a structural unit foun more

Cochineal

Cochineal Cochineal is the name of both crimson or carmine dye and the cochineal insect (Dactylopius coccus), a scale insect in the suborder Sternorrhyncha , from which the dye is derived. There are other species in the genus Dactylopius which can be used to produce cochineal extract, but t more

Coeliac disease

Coeliac disease Coeliac disease, also spelled celiac disease, is an autoimmune disorder of the small bowel that occurs in genetically predisposed people of all ages from middle infancy. Symptoms include chronic diarrhoea , failure to thrive (in children) and fatigue , but these may be absent a more

Diamond

Diamond Diamond is an allotrope of carbon . It is the hardest known natural material and the third-hardest known material after aggregated diamond nanorods and ultrahard fullerite . Its hardness and high dispersion of light make it useful for industrial applications and jewelry . Diamon more

Chemical elements