Article (Scientific journals)
Sur un hydrate de soufre
Spring, Walthère
1906In Bulletin de la Classe des Sciences. Académie Royale de Belgique, (7), p. 452-459
 

Files


Full Text
Spring_sur un hydrate de soufre.pdf
Publisher postprint (1.47 MB)
Download

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
Hydrate of Sulfur; Hydrate de soufre
Abstract :
[en] Spring, W. Bulletin de la Classe des Sciences, Academie Royale de Belgique (1906), 1906, 452-59; SciFinder (Chemical Abstracts Service: Columbus, OH); https://scifinder.cas.org (accessed July 8, 2010). If one lets sulfurous acid in water and hydrogen sulfide work on the other, then Polythionic acid form and sulfur, what latter after DEBUS (Chem. News 57. 87) a new allotropic modification with the ability to form with water a colloidal solution is to be (sulfur δ). The alleged Pentathionic acid shows up with intensive illumination not as an homogeneous body, but as a colloidal solution, and the sulfur δ of DEBUS not a allotropic modification, but a hydrate is S8•H2O. One receives it, if one removes and up to the constant weight in the vacuum dries the acid from with above reaction the formed S by months-long dialyze with daily fresh water, as a yellowish, partially translucent mass from conchoidal break; there is 51.6% sulfur when washing with CS2. The part unsolvable in CS2 dismisses from about 80° at water, with the melting point of the S the formula S8•H2O appropriate quantity (S8 = molecular size of the firm S!). The density of hydrate pressed in cylinder form amounts to with 19°, related to water of 4°, 1.9385; meadow after 93.6/2.07 6.4/1 = 51.6; = 100/51.6 = 1.9380 on octahedral S, if were residual insoluble S not after removal water in CS2. Powdered hydrate loses 2.41% H2O, the pressed 1.33% with 7-monthly standing over H2SO4; it thus has a vapor pressure. A part of hydrate is destroyed; simultaneous increased its density. If the drained body with water remains in contact, then the density decreases again; it exists thus a condition of the S, which connects itself directly with water, and which delivers the water in the dry medium again. In the desiccator partially S give in powder form 3.1%, in the pressed condition 5.8% at CS2 in solution dehydrated. Pressure favors thus the transition of the matter to a condition of larger density. Reprinted with the permission of the American Chemical Society. Copyright © 2010. American Chemical Society (ACS). All Rights Reserved.
Disciplines :
Chemistry
Author, co-author :
Spring, Walthère ;  Université de Liège - ULiège
Language :
French
Title :
Sur un hydrate de soufre
Alternative titles :
[en] A Hydrate of Sulfur
Publication date :
1906
Journal title :
Bulletin de la Classe des Sciences. Académie Royale de Belgique
ISSN :
0001-4141
Publisher :
Académie Royale de Belgique, Bruxelles, Belgium
Issue :
7
Pages :
452-459
Commentary :
Voir aussi : http://hdl.handle.net/2268/68019
Available on ORBi :
since 09 August 2010

Statistics


Number of views
47 (1 by ULiège)
Number of downloads
97 (0 by ULiège)

Bibliography


Similar publications



Contact ORBi