1762-95-4N.N#CSSOIFLUNRINLCBN-UHFFFAOYSA-NSee also: Ammonium thiocyanate (preferred); Thiocyanic Acid (annotation moved to).
1762-95-4CHEMBL3187560解説チオシアン酸アンモニウム (英: Ammonium thiocyanate) とは、無色または白色の無臭の潮解性のある結晶です。 化学式はNH4SCN、分子量は76.12、CAS登録番号は1762-95-4で表されるチオシアン酸のアンモニウム塩です。別名ロダン化アンモニウムとも呼ばれます。
用途Fe,Coの比色定量、標準液調製原料、薬品合成原料。
用途分析試薬、合成原料、写真用原材料。
用途マッチ、繊維の染色、絹の強度改良剤、分析用検出剤(FE,AG, HG)、中間物、殺虫剤殺菌剤等、その他無機化学製品
使用Colorless deliquescent crystals made by boiling an aqueous solution of ammonium cyanide with sulfur or polysulfides. It must be kept in a well-sealed container. The principal use for ammonium thiocyanate was in gold-toning formulas, but it was also used in a 5 percent solution to dissolve gelatin in overexposed carbon prints.
一般的な説明Ammonium thiocyanate is a colorless crystalline solid. Ammonium thiocyanate is soluble in water. The primary hazard is the threat posed to the environment. Immediate steps should be taken to limit its spread to the environment. Ammonium thiocyanate is used in chemical analysis, in photography, as a fertilizer, and for many other uses.
使用用途工業的には、主に繊維の染色や絹の強度改良など、繊維産業で多く利用されています。その他、薬品及び合成樹脂の原料、マッチ、写真用材料、殺虫剤、除草剤等に幅広く利用されています。 さらには、分析用試薬として銀、水銀 (Ag, Hg) 滴定における標準液として使用されます。チオシアン酸アンモニウムの水溶液はFe3+で血赤色に呈色するため、微量な鉄 (Fe) の比色分析にも用いられており、清涼飲料中の鉄含有量を決定するためにも使用できます。石炭を燃やした際に発生する気体から、硫黄を取り除く液体の主成分にもなっています。
製造方法(NH4)2S is obtained from reacting hydrogen sulfide with excess of ammonia:H2S + 2NH3 → (NH4)2S.
Ammonium thiocyanate (plus ammonium sulfide) [CAS: 12135-76-1] may be made by reaction of ammonia and carbon disulfide, a reaction which probably accounts for the presence of ammonium thiocyanate in the products of the destructive distillation of coal. This reaction corresponds to the formation of ammonium cyanate from ammonia and carbon dioxide.
純化方法Crystallise it three times from dilute HClO4 to give material optically transparent at wavelengths longer than 270nm. It has also been crystallised from absolute MeOH or from acetonitrile.
読み込み中…
化学的特性Ammonium thiocyanate is a colorless solid which absorbs moisture, becoming liquid, known as the “liquor.”
定義ammonium thiocyanate: A colourless, soluble crystalline compound,NH4NCS. It is made by theaction of hydrogen cyanide on ammoniumsulphide or from ammoniaand carbon disulphide in ethanol. Onheating, it turns into its isomerthiourea, SC(NH2)2. Its solutions givea characteristic blood-red colour withiron(III) compounds and so are employedas a test for ferric iron. Ammoniumthiocyanate is used as arapid fixative in photography and asan ingredient in making explosives.