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10043-52-4[Ca+2].[Cl-].[Cl-]UXVMQQNJUSDDNG-UHFFFAOYSA-L10043-52-4、14639-81-7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。
解説塩化カルシウム 炭酸カルシウムまたは水酸化カルシウムに塩酸を作用させ濃縮すると得られる.天然には海水中に約0.15% 存在し,また鉱物としても産出する.工業的には,アンモニアソーダ法の副産物として得られる.無水物は白色の固体で斜方晶系.格子定数a = 0.624,b = 0.643,c = 0.420 nm.融点772 ℃,沸点1600 ℃ 以上.密度2.15 g cm-3.潮解性で吸湿性が大きく乾燥剤に用いられる.水に易溶,種々のアルコール,アセトンに可溶.アンモニアおよびエタノールとはそれぞれCaCl2・8NH3,CaCl2・4C2H5OHのような分子化合物をつくるので,それらの乾燥には適当でない.飽和水溶液から結晶させると30 ℃ 以下では六水和物,30~40 ℃ では四水和物,40 ℃ 以上では二水和物を析出する.175 ℃ で一水和物となり,300 ℃ では無水物を生じる.六水和物と氷とを1.44:1の割合でまぜると,氷晶点は-54.9 ℃ で,寒剤として用いる.
用途汎用試薬、合成原料。
用途汎用試薬。
用途粉じん防止剤、防じん剤,氷結防止剤,石灰塩原料,紙?織物のサイズ剤?電子セラミック材料?金属石けん原料,医薬,医薬部外品,食品添加物,農薬(植物成長調整剤)
用途日本薬局方には塩化カルシウムと塩化カルシウム注射液が収載されている。医療用には2%または3%の水溶液、および電解質補正用に0.5モルの水溶液が使われる。また、リンゲル液の組成としても含まれている。骨格や歯牙(しが)の強化、発育促進などを目的としてカルシウムの補給に使われるが、注射液は栄養剤としてよりも治療薬として臨床的に使われることが多い。すなわち、カルシウムの作用が血液凝固促進因子として、また筋収縮にも関係することから、低カルシウム血症性テタニーをはじめ、けいれん性素因や出血性素因のほか、じんま疹(しん)、湿疹、薬疹、瘙痒(そうよう)症などの皮膚疾患などに使われる。筋肉注射をすると局所壊死(えし)の危険があるため、静脈注射を行う。
天然物の起源Calcium chloride may be found in nature as the mineral tachhydrite, CaCl22MgCl212H2O. It also is found in other minerals. Its concentration in sea water is about 0.15%.Calcium chloride has several industrial applications. The major applications of this compound are in deicing of roads, dust control, imparting stability to roads and buildings, and to improve traction in tractor tires. It is mixed with ice to make freezing mixtures. Hexahydrate mixed with crushed ice can lower the temperature of the cooling bath to below -50°C. It also is used as a desiccant for dehydrating gases and liquids. It is added to cement in various proportions to manufacture different types of concrete. Other uses are in adhesives, to lower gel temperatures, and as a calcium source in liquid feed supplements for dairy cattle. Also, the compound is used to control particle size development and reduce coalescence in plastics.
使用Calcium chloride is highly hygroscopic and is often used as a desiccant.
一般的な説明Calcium Chloride (CaCl2) is a water soluble ionic crystal with a high enthalpy change of solution. It is majorly derived from limestone and is a by-product of the Solvay process. It is an anhydrous salt that has a hygroscopic nature and can be used as a desiccant.
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化学的特性Calcium chloride, CaC12, is colorless deliquescent solid that is soluble in water and ethanol. It is formed from the reaction of calcium carbonate and hydrochloric acid or calcium hydroxide and ammonium chloride. It is used in medicine, as an antifreeze, and as a coagulant.
製造方法Calcium chloride is obtained as a by-product in the manufacture of sodium carbonate (soda ash) by ammonia-soda (Solvay) process. The process involves the reaction of sodium chloride with calcium carbonate and ammonia. Calcium chloride is currently produced in bulk amounts by evaporation of natural underground brines. In the laboratory, calcium chloride can be prepared by treating limestone with hydrochloric acid followed by evaporation of solution to obtain crystals. The crystals are dehydrated to obtain anhydrous salt. Calcium oxide or hydroxide may be used instead of carbonate.
Calcium chloride is a principal byproduct from the Solvay process.
純化方法It is available as fused granules or cubic crystals. It is very hygroscopic, very soluble in H2O (exothermic), and EtOH. Store it in a tightly closed container. [Ehrlich in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol I p 931 1963.]
定義本品は、カルシウムの塩化物であり、次の化学式で表される。
定義calcium chloride: A white deliquescentcompound, CaCl2, which issoluble in water; r.d. 2.15; m.p.782°C; b.p. >1600°C. There are anumber of hydrated forms, includingthe monohydrate, CaCl2.H2O, the dihydrate,CaCl2.2H2O (r.d. 0.84), andthe hexahydrate, CaCl2.6H2O (trigonal;r.d. 1.71; the hexahydrate loses4H2O at 30°C and the remaining2H2O at 200°C). Large quantities of itare formed as a byproduct of theSolvay process and it can be preparedby dissolving calcium carbonateor calcium oxide in hydrochloricacid. Crystals of the anhydrous saltcan only be obtained if the hydratedsalt is heated in a stream of hydrogenchloride. Solid calcium chloride isused in mines and on roads to reducedust problems, whilst the molten saltis the electrolyte in the extraction ofcalcium. An aqueous solution of calciumchloride is used in refrigerationplants.