The early history of chlorine / papers by Carl Wilhelm Scheele ... [and others].

  • Carl Wilhelm Scheele
Date:
1897
Catalogue details

Licence: Public Domain Mark

Credit: The early history of chlorine / papers by Carl Wilhelm Scheele ... [and others]. Source: Wellcome Collection.

Provider: This material has been provided by UCL Library Services. The original may be consulted at UCL (University College London)

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    ON MANGANESE, And its Properties. By Carl Wilhelm Scheele.* ***** Behaviotir of Mangatiese with common Marine Acid. 6. (fl) One ounce of pure spiritus salts was poured on half an ounce of finely-ground manganese. After this mixture had stood one hour in the cold, the acid had assumed a dark brown colour. Part of this solution was poured into a bottle, which was left open in a warm place The solution gave off a smell like warm aqua regis, and after a quarter of an hour it was clear and colourless as water, and the smell was gone, {b) The remainder of the brown mixture was set to digest, in order to see whether the marine acid would saturate itself with man- ganese. As soon as the mixture became warm, its smell of aqua regis became considerably augmented, and an effervescence also arose, which continued till the follow- ing day, when the acid was found to be saturated. On the residue which it had been unable to dissolve, there was again poured one ounce of spiritus satis, where- upon all the above-mentioned phenomena occurred, and the manganese became completely dissolved, except a little siliceous earth. ***** 23. The sixth paragraph shews the behaviour of man- ganese with marine acid. In this case it is not so easy * [Translated from Om Brunsten, eller Magnesia, och dess Egen- skaper, Kong. Vetenskaps Academiens Handlingar, xxxv., pp. 89, 93, 94, 105-110. Stockholm, 1774.]