|
|Section2= |Section3= }} Iron(III) sulfide, also known as ferric sulfide or sesquisulfide, is one of the three iron sulfides besides FeS and FeS2. It is a solid, black powder but decays at ambient temperature into a yellow-green powder. This is a relatively unstable artificial product that does not occur in nature. == Preparation and properties == Fe2S3 is prepared by addition of refrigerated iron(III) chloride solution to also cooled sodium sulfide solution. : 2 FeCl3 + 3 Na2S → Fe2S3↓ + 6 NaCl which decays at a temperature over 20°C into FeS and sulphur.〔Holleman, Wiberg: ''Inorganic Chemistry'' (2001), p. 1451; ISBN 0-12-352651-5〕 : Fe2S3 → 2 FeS + S↓ With hydrochloric acid it decays according to the following reaction equation:〔H. Roempp, ''Chemie'' (1997), S. 1099; ISBN 3-13-734710-6〕 : Fe2S3 + 4 HCl → 2 FeCl2 + 2 H2S↑ + S↓ 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Iron(III) sulfide」の詳細全文を読む スポンサード リンク
|