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A detailed description of a substance termed alumen occurs in the Roman Pliny the Elder's Natural History. [8] By comparing Pliny's description with the account of stypteria (στυπτηρία) given by Dioscorides, [9] it is obvious the two are identical. Pliny informs us that a form of alumen was found naturally in the earth, and terms it ...
The English name alum does not come directly from Latin, whereas alumine/alumina comes from the Latin word alumen (upon declension, alumen changes to alumin-). One example was Essai sur la Nomenclature chimique (July 1811), written in French by a Swedish chemist, Jöns Jacob Berzelius , in which the name aluminium is given to the element that ...
Crystals of alum, the naturally occurring form of which was known back to the ancients.. The history of aluminium was shaped by the usage of its compound alum.The first written record of alum was in the 5th century BCE by Greek historian Herodotus. [2]
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Potassium alum was described under the name alumen or salsugoterrae by Pliny, [12] and it is clearly the same as the stypteria (στυπτηρία) described by Dioscorides. [13] However, the name alum and other names applied to this substance — like misy , sory , chalcanthum , and atramentum sutorium — were often applied to other products ...
Aluminium reacts with most nonmetals upon heating, forming compounds such as aluminium nitride (AlN), aluminium sulfide (Al 2 S 3), and the aluminium halides (AlX 3).It also forms a wide range of intermetallic compounds involving metals from every group on the periodic table.
Besides "Montepellusanus", [4] during the thirteenth century (and beyond) the only supply of saltpeter across Christian Europe (according to "De Alchimia" in 3 manuscripts of Michael Scot, 1180–1236) was "found in Spain in Aragonia in a certain mountain near the sea", (which can only be Catalonia): saraceni apellant ipsum borax et credunt quod sit alumen.
Aluminium alloy bicycle wheel. 1960s Bootie Folding Cycle. Aluminium alloys with a wide range of properties are used in engineering structures. Alloy systems are classified by a number system or by names indicating their main alloying constituents (DIN and ISO).