Turpeth mineral

Merkur, m. mercury, -blende, /. Min.) cinnabar. -chlorid, n. mercury chloride, specif, mercuric chloride, mercury(II) chloride, -chloriir, n. mercurous chloride, mercury(I) chloride, -gelb, n. mercury yellow, turpeth mineral. 

An insoluble sulphate may be detected by the formation of turpeth mineral on the addition of a 10 per cent, solution of mercuric nitrate in dilute nitric acid (1 in 100) the small yellow tetragonal crystals of the basic sulphate may be identified microscopically. The reaction takes place immediately in the cold with calcium and mercurous sulphates, less readily with strontium and lead sulphates, whilst with barium sulphate boiling is necessary. ... 

Mercuric Subsulfate. Mercury oxide sulfate mercury oxonium sulfate Turpeth mineral basic mercuric sulfate. HgjO S mol wt 729.90. Hg 82.45%. O 13.15%, S 4.39%. HgSOt.2HgO. Proved to be mercury oxonium sulfate in x -ray studies of its structure. The polymeric oxonium cations (HgjO form 2-dimensional infinite layers. The sulfate ions lie inside the loops of the wide meshed cation lattice. 

Turpeth mineral 4028 1338-23-4 Methyl ethyl ketone peroxide 2462... 

Diflblved in vitriolic acid, called turpeth mineral, or hydrargyrus vitriolatus. 

Rouelle s class (3), sels neutres qui ont une trfes petite quantite d acide, did not include what we call basic salts, since he gave as an example silver chloride, which is insoluble because of the small quantity of acid it contains, although it is quite neutral to vegetable colours. He did point out that turpeth mineral (basic mercuric sulphate) and the salt which remains in solution when turpeth is precipitated from a solution of mercuric sulphate by water, contain different proportions of acid. 

Lavoisier fails to mention that Bayen in 1775 had published a quantitative experiment in which he heated turpeth mineral (basic mercuric sulphate) and obtained sulphurous acid air (sulphur dioxide) and a gas (oxygen) which he did not investigate (see p. 398). 

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