Quecksilber(i)-Sulfat – Wikipedia Wikipedia

Quecksilber(i)-Sulfat Is a chemical connection of the heavy metal mercury with the sum formula HGSO ₄ . When heating to about 450 ° C or the action of energy -rich light, the fabric decomposes and forms elementary mercury and sulfur oxides. Like the connection itself, they are extremely poisonous and should therefore not be inhaled.

Mercury (II) sulfate can be made from mercury and concentrated sulfuric acid. ^[3]

${displaystyle mathrm {Hg+2 H_{2}SO_{4}rightarrow HgSO_{4}+SO_{2}+2 H_{2}O} }$

It can only be crystallized from sulfuraic solution, since, in aqueous solution, serious basic mercury sulfate HGSO ₄ · 2 HGO forms. This is a light yellow powder that was broken down in light and used in pharmacy.

${displaystyle mathrm {3 HgSO_{4}+2 H_{2}Orightarrow HgSO_{4}cdot 2 HgO+2 H_{2}SO_{4}} }$

In a little water or in a solution that is easily acidified with sulfuric acid, it forms a monohydrate made of HGSO ₄ ·H ₂ O. ^[4]

Mercury (II) sulfate is a white, non-flammable powder. With its decomposition temperature of 450 ° C, it glows and disintegrates into mercury, sulfur dioxide and a small part also in sulfur trioxide. With alkalis sulfate it trains double or complex salts, e.g. B.: K ₂ SO ₄ ·3 HgSO ₄ ·2 H ₂ O. ^[4] It crystallizes in an orthorhombic structure with the room group Pn 2 _first m (Room group no. 31, position 5) Template: Raumgruppe/31.5 and the grid parameters a = 4.778 to, b = 4.812 to und c = 6.572 to. ^[5]

Mercury (II) sulfate is used as a catalyst in the production of acetaldehyde from ethin and water. This creates methyl mercury as a by -product.

In aqueous solution it will be as Deniges-reagz (named after the French biochemist Georges Denigés) used to prove isoolefins and tertiary alcohols, which can easily be dehydrated into isoolefins in the presence of acid. A positive yellow or red precipitation is shown. ^{[6] [7]}

Mercury (II) sulfate is a toxic fabric for both animals and humans. Mercury sulfate is an environmental poison and must not be disposed of in a normal way, since it is particularly threatening for water and their residents.

1. ↑ ^{a b c d It is f g h} Entry to Quecksilber(i)-Sulfat In the Gestis fabric database of the IFA, accessed on January 20, 2022. (JavaScript required)
2. ↑ Not explicitly listed in Regulation (EC) No. 1272/2008 (CLP), but falls under the group entry with the specified labeling inorganic compounds of mercury with the exception of mercuric sulphide and those specified elsewhere in this Annex in the Classification and Labelling Inventory the European chemical agency (ECHA), accessed on February 1, 2016. Manufacturer or traditional charm can be the harmonized classification and labeling expand .
3. ↑ Erwin Riedel; Inorganic chemistry, p. 750
4. ↑ ^{a b} Heinrich Remy: Inorganic chemistry textbook Volume II, page 640–641, Leipzig 1973, Academic Verlagsgesellschaft Geest & Portig K.-G.
5. ↑ K. Aurivillius, C. Steel glove: Reinvestigation of the crystal structures of HgSO ₄ and CdSO ₄ . In: Journal of Crystallography , 153, 1980, S. 121–129, Two: 10.1524/Zkri.1980.153.14.121 .
6. ↑ KATSUHIKO ICHIKAWA, KOICHI FUJITA, OSAMU ITOH: Relation between Denigés Reaction and Oxymercuration . In: Bulletin of the Institute for Chemical Research, Kyoto University . Band 42 , No. 4 , 25. August 1964, hdl: 2433/76026 , S. 221–226 .
7. ↑ E. M. Marks, D. Lipkin: Reaction of Aliphatic Ethers With Denigès’ Reagent . In: The Journal of Organic Chemistry . Band 3 , No. 6 , 1939, S. 598–602 , doi: 10.1021/jo01223a008 .