7784-24-9O.O.O.O.O.O.O.O.O.O.O.O.O=S(=O)([O-])[O-].O=S(=O)([O-])[O-].[Al+3].[K+]GNHOJBNSNUXZQA-UHFFFAOYSA-JPotassium aluminium sulfate dodecahydrate is a hydrate resulting from the the formal combination of anhydrous potassium aluminium sulfate with 12 mol eq. of water. It has a role as a mordant, an astringent and a flame retardant. It is a potassium salt, a hydrate, an aluminium salt and a metal sulfate. It contains an aluminium(3+) and a potassium aluminium sulfate.
安全情報は参考情報です。供給元の安全データシート(SDS)、適用法令、専門家による評価に代わるものではありません。
This chemical does not meet GHS hazard criteria for 100% (43 of 43) of all reports.
Not Classified
Aggregated GHS information provided per 43 reports by companies from 2 notifications to the ECHA C&L Inventory.
110 [mg/m3]
1200 [mg/m3]
7000 [mg/m3]
Occurs naturally as efflorescence on alum shale and as feather alum on lava; Used to dress fur skins (one of oldest methods); Forms aluminum potassium sulfate (CAS 10043-67-1) when heated above melting point (92.5 deg C); [Ullmann] The most important alums are aluminum potassium sulfate, aluminum ammonium sulfate, and aluminum sodium sulfate. Aluminum potassium sulfate (hydrated) has the formula KAl(SO4)212H2O. Aluminum sulfate is used as a replacement of the alums. Hydrolysis of the alums yields aluminum hydroxide as a precipitant. Industrial uses include paper sizing, water purification, and textile dyeing (mordant). Alums are also used in pickling, baking powder, fire extinguishers, and astringents. [Britannica]
Fur Dressing and Dyeing [Category: Industry]
Preparing and mounting animal skins (taxidermy) [Category: Hobbies]
解説ミョウバン石は,化学組成KAl3(SO4)2(OH)6であらわされる鉱物。六方晶系。底面(0001)に良好なへき開がある。菱面体の結晶または板状,鱗片状,塊状。モース硬度3.5~4,もろい。比重2.6~2.9。ガラス光沢。白,帯灰色,帯黄色,帯赤色,帯褐色。熱すると微音を発してはねる。火山岩地帯に熱水変質作用によって生ずる。アルミニウム,焼きミョウバン,カリ肥料などの原料として用いられた。日本では兵庫県栃原蠟石鉱床から産出するが,用途がなく廃棄されている。株式会社平凡社 世界大百科事典 第2版について 情報
用途食品添加物用。
用途染色、顔料、製紙用、浄水用。
用途焼ミョウバン、染色、顔料
使用Aluminium potassium sulfate dodecahydrate is a white crystal that is soluble in water. It is made by roasting alunite in a furnace and then harvesting the product by crystallization. Aluminium potassium sulfate dodecahydrate was used to harden gelatin emulsions by introduction, by bathing the exposed plates prior to development, or by use in the fixing bath. Mixed with citric or other acids, it was also used as a clearing bath to remove developer stains in negatives.
一般的な説明Aluminum potassium sulfate dodecahydrate is an inorganic sulfate salt of aluminum and potassium. Linear growth rates of (100), (111) and (110) faces of its crystals have been investigated.
Potassium alum is manufactured by treating bauxite with sulfuric acid and then potassium sulfate. Alternatively, aluminum sulfate is reacted with potassium sulfate.
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読み込み中…
7784-24-9DTXSID401018678CHEBI:86465化学的特性white to colourless crystals
純化方法Crystallise it from weak aqueous H2SO4 (ca 0.5mL/g). Its solubility (%) in H2O is 5.7 (0o), 12.0 (20o) and 136.9 (100o).
定義本品は、硫酸(*)のアルミニウムカリウム塩であり、次の化学式で表される。参照表示名称:硫酸
定義ChEBI: A hydrate resulting from the the formal combination of anhydrous potassium aluminium sulfate with 12 mol eq. of water.