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34-514: Its site is located in Sivas Province Asiatic Turkey . [REDACTED]  This article incorporates text from a publication now in the public domain :  Smith, William , ed. (1854–1857). "Camisa". Dictionary of Greek and Roman Geography . London: John Murray. 39°50′45″N 37°24′04″E  /  39.845769°N 37.401155°E  / 39.845769; 37.401155 This article about

68-613: A former Greek populated place in Asia Minor is a stub . You can help Misplaced Pages by expanding it . This article about a populated place in the Byzantine Empire is a stub . You can help Misplaced Pages by expanding it . This geographical article about a location in Sivas Province , Turkey is a stub . You can help Misplaced Pages by expanding it . Sivas Province Sivas Province ( Turkish : Sivas ili )

102-467: A perfume-free deodorant (antiperspirant), and unprocessed mineral alum is sold in Indian bazaars for just that purpose. Throughout Island Southeast Asia , potassium alum is most widely known as tawas and has numerous uses. It is used as a traditional antiperspirant and deodorant, and in traditional medicine for open wounds and sores. The crystals are usually ground into a fine powder before use. During

136-510: A substance termed alumen occurs in the Roman Pliny the Elder 's Natural History . By comparing Pliny's description with the account of stypteria (στυπτηρία) given by Dioscorides , it is obvious the two are identical. 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

170-624: A sweetish taste, react as acid by turning blue litmus to red, and crystallize in regular octahedra . In alums each metal ion is surrounded by six water molecules. When heated, they liquefy, and if the heating is continued, the water of crystallization is driven off, the salt froths and swells, and at last an amorphous powder remains. They are astringent and acidic. Alums crystallize in one of three different crystal structures. These classes are called α-, β- and γ-alums. The first X-ray crystal structures of alums were reported in 1927 by James M. Cork and Lawrence Bragg , and were used to develop

204-440: A trivalent metal does not form a caesium alum, it neither will form an alum with any other alkali metal or with ammonium. Selenium or selenate alums are also known that contain selenium in place of sulfur in the sulfate anion, making selenate ( SeO 4 ) instead. They are strong oxidizing agents . In some cases, solid solutions of alums with different monovalent and trivalent cations may occur. In addition to

238-545: A valuable commodity in The Histories . The production of potassium alum from alunite is archaeologically attested on the island Lesbos . The site was abandoned during the 7th century CE, but dates back at least to the 2nd century CE. Native alumen from the island of Melos appears to have been a mixture mainly of alunogen ( Al 2 (SO 4 ) 3 ·17 H 2 O ) with potassium alum and other minor sulfates. A detailed description of

272-590: Is potassium alum . It has been used since antiquity as a flocculant to clarify turbid liquids, as a mordant in dyeing , and in tanning . It is still widely used in water treatment , for medicine, for cosmetics (in deodorant ), for food preparation (in baking powder and pickling ), and to fire-proof paper and cloth. Alum is also used as a styptic , in styptic pencils available from pharmacists, or as an alum block, available from barber shops and gentlemen's outfitters, to stem bleeding from shaving nicks; and as an astringent . An alum block can be used directly as

306-497: Is a double salt , composed of sulfuric acid, alumina, and potash. In the same journal volume, Chaptal published the analysis of four different kinds of alum, namely, Roman alum, Levant alum, British alum, and an alum manufactured by himself, confirming Vauquelin 's result. Some alums occur as minerals, the most important being alunite . The most important alums – potassium, sodium, and ammonium – are produced industrially. Typical recipes involve combining aluminium sulfate and

340-482: Is a province of Turkey . It is located in the eastern part of the Central Anatolia region of Turkey. Its area is 28,164 km (the second largest province after Konya), and its population is 634,924 (2022). Its adjacent provinces are Yozgat to the west, Kayseri to the southwest, Kahramanmaraş to the south, Malatya to the southeast, Erzincan to the east, Giresun to the northeast, and Ordu to

374-521: Is a double sulfate of the typical formula X SO 4 · Y 2 (SO 4 ) 3 ·22 H 2 O , such that Double sulfates with the general formula X 2 SO 4 · Y 2 (SO 4 ) 3 ·24 H 2 O are also known, where X is a monovalent cation such as sodium , potassium , rubidium , caesium , thallium , ammonium , or ( NH 4 ), methylammonium ( CH 3 NH 3 ), hydroxylammonium ( HONH 3 ) or hydrazinium ( N 2 H 5 ) and Y

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408-458: Is a trivalent metal ion, such as aluminium , chromium , titanium , manganese , vanadium , iron , cobalt , gallium , molybdenum , indium , ruthenium , rhodium , or iridium . Analogous selenates also occur. The possible combinations of univalent cation, trivalent cation, and anion depends on the sizes of the ions . A Tutton salt is a double sulfate of the typical formula X 2 SO 4 Y SO 4 ·6H 2 O , where X

442-466: 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 . By itself, "alum" often refers to potassium alum , with the formula KAl(SO 4 ) 2 ·12 H 2 O . Other alums are named after the monovalent ion, such as sodium alum and ammonium alum . The name "alum"

476-488: Is also used, more generally, for salts with the same formula and structure, except that aluminium is replaced by another trivalent metal ion like chromium , and/or sulfur is replaced by another chalcogen like selenium . The most common of these analogs is chrome alum KCr(SO 4 ) 2 ·12 H 2 O . In most industries, the name "alum" (or "papermaker's alum") is used to refer to aluminium sulfate , Al 2  (SO 4 ) 3 · n   H 2 O , which

510-407: 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 2 O , a dark violet crystalline double sulfate of chromium and potassium, was used in tanning . In general, alums are formed more easily when the alkali metal atom is larger. This rule was first stated by Locke in 1902, who found that if

544-457: Is because alum does not react chemically to any significant degree with any of these metals, but will corrode carbon steel. When heat is applied to an alum mixture holding a piece of work that has a drill bit stuck in it, if the lost bit is small enough, it can sometimes be dissolved / removed within hours. Many trivalent metals are capable of forming alums. The general form of an alum is XY (SO 4 ) 2 · n   H 2 O , where X

578-606: Is noted for its thermal springs . Sivas province is divided into 17 districts (capital district in bold ): The route of the Silk Road and the Persian Royal Road run through Sivas. According to the written historical sources, the region of Sivas province was first inhabited during the period of the Hittite civilization by the beginning of 2000 BC and became an important settlement. The region then encountered

612-662: Is used for most industrial flocculation (the variable n is an integer whose size depends on the amount of water absorbed into the alum). For medicine , the word "alum" may also refer to aluminium hydroxide gel used as a vaccine adjuvant . 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 2 O , MgAl 2 (SO 4 ) 4 ·22 H 2 O , NaAl(SO 4 ) 2 ·6 H 2 O , MgSO 4 ·7H 2 O and Al 2 (SO 4 ) 3 ·17 H 2 O . The Ancient Greek Herodotus mentions Egyptian alum as

646-501: The Middle Ages , alchemists and other writers do not seem to have distinguished the two salts accurately. In the writings of the alchemists we find the words misy , sory , and chalcanthum applied to either compound; and the name atramentum sutorium , which one might expect to belong exclusively to green vitriol, applied indiscriminately to both. Alum was the most common mordant (substance used to set dyes on fabrics) used by

680-579: The animistic anito religions of the islands. For traditional Japanese art , alum and animal glue were dissolved in water, forming a liquid known as dousa ( Japanese : 礬水 ), and used as an undercoat for paper sizing . Alum in the form of potassium aluminium sulphate or ammonium aluminium sulfate in a concentrated bath of hot water is regularly used by jewelers and machinists to dissolve hardened steel drill bits that have broken off in items made of aluminum, copper, brass, gold (any karat), silver (both sterling and fine) and stainless steel. This

714-481: The phase retrieval technique isomorphous replacement . The solubility of the various alums in water varies greatly, sodium alum being soluble readily in water, while caesium and rubidium alums are only slightly soluble. The various solubilities are shown in the following table. At temperature T , 100 parts water dissolve: Aluminium-based alums have been used since antiquity, and are still important for many industrial processes. The most widely used alum

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748-526: The 19th century, alum was used along with other substances like plaster of Paris to adulterate certain food products, particularly bread. It was used to make lower-grade flour appear whiter, allowing the producers to spend less on whiter flour. Because it retains water, it would make the bread heavier, meaning that merchants could charge more for it in their shops. The amount of alum present in each loaf of bread could reach concentrations that would be toxic to humans and cause chronic diarrhea, which could result in

782-599: The alums, which are dodecahydrates, double sulfates and selenates of univalent and trivalent cations occur with other degrees of hydration. These materials may also be referred to as alums, including the undecahydrates such as mendozite and kalinite , hexahydrates such as guanidinium [ CH 6 N 3 ] and dimethylammonium [ (CH 3 )2NH 2 ] "alums", tetrahydrates such as goldichite , monohydrates such as thallium plutonium sulfate and anhydrous alums ( yavapaiites ). These classes include differing, but overlapping, combinations of ions. A pseudo alum

816-480: The concentrated solution. In 1767, Torbern Bergman observed the need for potassium or ammonium sulfates to convert aluminium sulfate into alum, while sodium or calcium would not work. The composition of common alum was determined finally by Louis Vauquelin in 1797. As soon as Martin Klaproth discovered the presence of potassium in leucite and lepidolite , Vauquelin demonstrated that common alum

850-575: The death of young children. Alum is used as a mordant in traditional textiles; and in Indonesia and the Philippines , solutions of tawas , salt , borax , and organic pigments were used to change the color of gold ornaments. In the Philippines, alum crystals were also burned and allowed to drip into a basin of water by babaylan for divination . It is also used in other rituals in

884-561: The dye industry, especially in Islamic countries, during the middle ages . It was the main export of the Chad region, from where it was transported to the markets of Egypt and Morocco , and then to Europe . Less significant sources were found in Egypt and Yemen . During the early 1700s, G. E. Stahl claimed that reacting sulfuric acid with limestone produced a sort of alum. The error

918-541: The name of alumen , but they were all characterised by a certain degree of astringency , and were all employed for dyeing and medicine. Pliny wrote that there is another kind of alum that the ancient Greeks term schiston , and which "splits into filaments of a whitish colour". From the name schiston and the mode of formation, it seems that this kind was the salt that forms spontaneously on certain salty minerals, as alum slate and bituminous shale , and consists mainly of sulfates of iron and aluminium. One kind of alumen

952-576: The north. Its capital is Sivas . Most of Sivas Province has the typical continental climate of the Central Anatolian Region , in which summer months are hot and dry, while winter months are cold and snowy. However, the northern part of the province shows some features of the oceanic / humid subtropical Black Sea climate, while the eastern portion has influences of the Eastern Anatolian highland climate. This province

986-465: The province produced alum , copper , silver , iron , coal , asbestos , arsenic , and salt . 39°31′11″N 37°17′42″E  /  39.51972°N 37.29500°E  / 39.51972; 37.29500 This geographical article about a location in Sivas Province , Turkey is a stub . You can help Misplaced Pages by expanding it . Alum An alum ( / ˈ æ l ə m / )

1020-765: The reign of Armenian , Roman , Byzantine , Seljukian , and Ottoman civilizations. The foundations of the modern Turkish Republic were laid in the Sivas Congress assembled on 4 September 1919, during the presidency of Mustafa Kemal Atatürk , thus making the province of Sivas important to the history of the Turkish nation. The main mountains of the Köse Mountains are located in the mountain range; Mount Asmalı (2.406), Mount Tekeli (2.621 m), Mount Köse (3,050 m) and Kızıldağ (3.015 m). Tecer Mountains, Akdağlar, İncebel Mountains, Mount Yama. Historically,

1054-430: The salt would be white and would be suitable, according to Pliny, for dyeing bright colors. Pliny describes several other types of alumen but it is not clear as to what these minerals are. The alumen of the ancients, then, was not always potassium alum, not even an alkali aluminum sulfate. Alum and green vitriol (iron sulfate) both have sweetish and astringent taste, and they had overlapping uses. Therefore, through

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1088-468: The sulfate monovalent cation. The aluminium sulfate is usually obtained by treating minerals like alum schist , bauxite and cryolite with sulfuric acid. Aluminium-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 Aluminium-based alums have a number of common chemical properties. They are soluble in water , have

1122-431: Was a liquid, which was apt to be adulterated; but when pure it had the property of blackening when added to pomegranate juice. This property seems to characterize a solution of iron sulfate in water; a solution of ordinary (potassium) alum would possess no such property. Contamination with iron sulfate was greatly disliked as this darkened and dulled dye colours. In some places the iron sulfate may have been lacking, so

1156-447: Was soon corrected by Johann Heinrich Pott and Andreas Sigismund Marggraf , who showed that the precipitate obtained when an alkali is poured into a solution of alum, namely alumina , is quite different from lime and chalk , and is one of the ingredients in common clay . Marggraf also showed that perfect crystals with properties of alum can be obtained by dissolving alumina in sulfuric acid and adding potash or ammonia to

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