요오드화수소산

Hydrogen iodide is a colourless to yellow/brown with an acrid odour non-flammable gas. Hydrogen iodide is incompatible with water and other halides. Hydrogen iodide, upon contact with moisture in air, releases dense vapours. Hydrogen iodide reacts with water to form corrosive acids and reacts violently with alkalis. Most metals corrode rapidly on contact with wet hydrogen iodide, and prolonged exposure of hydrogen iodide to fire or intense heat has been reported to cause the container to rupture and rocket.

개요‘Iodine’ is derived from iodes, a Greek word meaning violet. It is a member of the halide family and hydrogen iodide is considered a strong acid.

용도Hydriodic acid is used in the manufactureof iodides, as a reducing agent, and indisinfectants and pharmaceuticals.

일반 설명A colorless to yellow liquid with a pungent odor. Consists of a solution of hydrogen iodide in water. Fumes irritate the eyes and mucous membranes. Corrosive to metals and to tissue. It is prepared by the reaction of iodine and hydrosulfuric acid or by the reaction of phosphorus plus iodine plus water followed by distillation. Concentrated hydroiodic acid reacts with the oxygen of the air to form free iodine, which gives a brownish color to the solution. It also gives an idea of the reducing nature of this acid. It is an important reagent in organic chemistry and is used commercially in the preparation of iodides.

물의 요오드화(iodide) 수소 요오드화(iodide)기체의 흡수 또는 황화수소 요오드화(iodide)의 작용에 의해 준비됨. (요오드화수소산(Hydriodic acid)) 요오드화(iodide)과 수소의 촉매반응이나 농축된 오산화린(phosphorous pentoxide)과 요오드화수소(Hydroiodic)산액에 의해 준비 요오드화(Hydroiodic) 수소산은 수계에서 수소 요오드화(iodide) 기체가 용존할 때 무색액의 형태임. 이것은 아이오딘(iodine)과 황화수소나 하이드라진(hydrazine)이나 전해질방법에의한 반응에 의해 준비됨. 일반적 상업 수소산은 40-55 %의 아이오딘화수소(HI)를 포함 원소의 촉매. 또한 요오드화수소산(hydriodic acid)액과 오산화린(phosphorus pentoxide)처리에 의해 준비됨. (수소 요오드화(iodide) 기체) 수소 요오드화(iodide) 기체는 이것의 쉽게 산화됨으로 인해 강한 산사용으로 준비될수 없음; 따라서 약산과 요오드화(iodine)이나 특정 요오드화(iodide)의 가수분해로부터 준비되어야함. 요오드화 수소산은 수계 및 일반적으로 47 %의 수소요오드화(iodide)을 포함하는 상업용에서 수소 요오드화(iodide) 기체가 용존할 때 무색액의 형태

Hydrogen iodide is prepared by direct combination of hydrogen and iodinevapor in the presence of platinum catalyst: H2 + I2 → 2HI The compound is produced in commercial scale by reaction of iodine withhydrazine or hydrogen sulfide: 2I2 + N2H4 → 4HI + N2 I2 + H2S → 2HI + S Hydriodic acid may be prepared by dissolving hydrogen iodide gas in water.The acid also may be obtained by electrolysis of iodine solution or by passinghydrogen sulfide into a suspension of iodine in water and boiling to expelexcess sulfide. After boiling, the precipitated sulfur is removed by filtrationthrough fritted glass plate or glass wool. Hydriodic acid in small quantities may be prepared by adding water care-fully to a solid mixture of red phosphorus and iodine. Technical grade hydriodic acid is a 47% HI solution and usually has abrown color due to the presence of free iodine, produced by air oxidation of HI.Hydriodic acid should be stored in the dark to prevent photochemical decom-position, and free from air to prevent oxidation. The addition of 1.5%hypophosphorus acid (H3PO2) prevents oxidative decomposition. Hydriodic acid also is commercially sold at 57% (azeotropic concentration)and 10% aqueous solutions.