摘要:

AbstractDie Dampfspannung von gesättigten, wässrigen Lösungen von NH4NO3wurde von 10° C an bis zum Schmelzpunkt des Salzes (169° C) gemessen. Es zeigte sich, dass die gefundene Kurve zwei Maxima besitzt, eine Tatsache, die bislang für gesättigte, wässrige Lösungen noch niemals gefunden worden ist.Eine theoretische Betrachtung und eine Besprechung der Bedingungen für das Auftreten von 2 Maxima wir

ISSN:0165-0513    

DOI:10.1002/recl.19410600502

出版商:WILEY‐VCH Verlag    

年代:1941

数据来源: WILEY

摘要:

AbstractIn this paper the dyeing process of silk with an acid dye is explained by means of density measurements.The adsorption of hydrogen by silk has been measured and found to be in correspondence with the explanation of the dyeing process. From the sorption measurements in air, it can be deduced that the sorption of air by silk is principally a chemo‐sorption.From the density of silk in helium the number of possibilities found in the literature for the lattice of Bombyx‐Mori silk can be reduced to a single one.By comparing degummed and raw silk, it was found that the sericins are low molecular proteins, which sorb neither hydrogen nor air.The relation is discussed between chain‐length, relative positions of the chains, on the one hand, and the sorption properties, density etc. on the other hand.The densities of silk cited in the literature are criticised and compared with the author's observa

ISSN:0165-0513    

DOI:10.1002/recl.19410600503

出版商:WILEY‐VCH Verlag    

年代:1941

数据来源: WILEY

摘要:

AbstractIm Gegensatz zu den in der Literatur erwähnten Angaben muss das Isanoöl nicht zu den trocknenden, sondern zu den nicht‐trocknenden Ölen gerechnet werden. Es ist als Leinölersatz ungeeignet. Infolge der im Öle vorkommenden Vinylverbindungen polymerisiert es sich sehr leicht, sowohl beim Erhitzen als auch bei der Belichtung. Die anfangs hellgelbe Farbe des Öles wird dadurch

ISSN:0165-0513    

DOI:10.1002/recl.19410600504

出版商:WILEY‐VCH Verlag    

年代:1941

数据来源: WILEY

摘要:

AbstractThe gold number of agar has been determined, at which the protective action of agar could be made visible. The presence in agar of a gel‐forming component and a component which does not form a gel could be demonstrate

ISSN:0165-0513    

DOI:10.1002/recl.19410600505

出版商:WILEY‐VCH Verlag    

年代:1941

数据来源: WILEY

摘要:

AbstractIt is found that the change which occurs in the position of a homogeneous chemical equilibrium due to an excess of one of the reacting substances is dependent upon the manner in which this excess is formed and the coefficients of the chemical equation (see Summary).

ISSN:0165-0513    

DOI:10.1002/recl.19410600506

出版商:WILEY‐VCH Verlag    

年代:1941

数据来源: WILEY

摘要:

AbstractBy means of the static dilatometric method the cubical expansion of ammonium nitrate was measured between −72.2° and −40.2° C. Since no abnormality could be detected either in this experiment or in the determination of heating curves, the existence of a transition region as stated by Crenshaw and Ritter could not be ascertained. Nevertheless a sluggishness in the establishment of volume‐temperature equilibrium was probably due to the same cause as that of the low temperature transitions in other ammoniu

ISSN:0165-0513    

DOI:10.1002/recl.19410600507

出版商:WILEY‐VCH Verlag    

年代:1941

数据来源: WILEY

摘要:

AbstractIt is shown that Raoult's law as a limiting law for infinite dilution is perfectly general and independent of the model used. Instead of taking the molecular potential of the „solvent”︁ as a starting point for discussion, that of the „solute”︁ is considered as a more s

ISSN:0165-0513    

DOI:10.1002/recl.19410600508

出版商:WILEY‐VCH Verlag    

年代:1941

数据来源: WILEY

摘要:

Abstract2‐Methyl‐1‐hydroxy‐4‐amino‐naphthalene hydrochloride, a water‐soluble form of vitamin K, was synthesized in the laboratory from α‐naphthol as the s

ISSN:0165-0513    

DOI:10.1002/recl.19410600509

出版商:WILEY‐VCH Verlag    

年代:1941

数据来源: WILEY

摘要:

AbstractPfeilsticker's interrupted arc has been modified so as to insure easy handling and uniform performance. The characteristics of the new arc are briefly summarized.

ISSN:0165-0513    

DOI:10.1002/recl.19410600510

出版商:WILEY‐VCH Verlag    

年代:1941

数据来源: WILEY

摘要:

AbstractL'addition d'anhydride sulfureux au systéme conjugué de doubles liaisons du di‐cyclohexényle‐1, 1′ (II), qui renferme une double liaison dans chaque anneau, donne naissance à une sulfone tricyclique (III). La double liaison de ce produit fixe de l'hydrogène, du brome et de l'ozone. En présence 'eau, l'ozonisation conduit à un peroxyde (Va), qui après réduction engendre une dicérone, la dicyclohexanonylsulfide (Vb). On établit la structure de ce dernier composé en le préparant par oxydation de dicyclohexanonylsulfure (VIb), qu'on obtient en faisant réagir du sulfure sodique sur de l'α

ISSN:0165-0513    

DOI:10.1002/recl.19410600511

出版商:WILEY‐VCH Verlag    

年代:1941

数据来源: WILEY