bluuebunny/crossref_metadata_2025_split huggingface dataset:
The photochemistry of sulfur dioxide excited within its first allowed band (3130 Å) and the “forbidden” band (3700–;4000 Å)
Authors: Chung Kuenja , Calvert Jack G. , Bottenheim Jan W. 
Published: January 2005

AbstractThe quantum yields of SO3 formation have been determined in pure SO2 and in SO2 mixtures with NO, CO2, and O2 using both flow and static systems. In separate series of experiments excitation of SO2 was effected within the forbidden band, SO2(3B1) ← \documentclass{article}\pagestyle{empty}\begin{document}$$ {\rm SO}_2 (\tilde X,^1 A_1 ) $$\end{document}, and within the first allowed singlet band at 3130 Å. The values of Φ were found to be sensitive to the flow rate of the reactants. These results and the apparently divergent quantum yield results of Cox [10], Allen and coworkers [24, 26, 29], and Okuda and coworkers [11] were rationalized quantitatively in terms of the significant occurrence of the reactions SO + SO3 → 2SO2 (2), and 2SO → SO2 + S [or (SO)2] (3), in experiments of long residence time. From the present rate data, values of the rate constants were estimated, k2=(1.2±0.7) × 106; k3=(5±4) × 105 l˙/mole · sec. Φ values from triplet excitation experiments at high flow rates of NOSO2 and CO2SO2 mixtures showed the sole reactant with SO2 leading to SO3 formation in this system to be SO2(3B1); SO2(3B1) + SO2 → SO3 + SO(3Σ−) (la); k=(4.2±0.4) × 107 l./mole · sec. With excitation of SO2 at 3130 Å both singlet and triplet excited states play a role in SO3 formation. If the reactive singlet state is 1B1, the long‐lived fluorescent state, SO2(1B1) + SO2 → SO3 + SO (1 Δ or 3Σ−) (lb), then k=(2.2±0.5) × 109 l./mole · sec. From the observed inhibition of SO formation by added nitric oxide, it was found that the SO3‐forming triplet state, generated in this singlet excited SO2 system, had a relative reactivity toward SO2 and NO which was equal within the experimental error to that observed here for the SO2(3B1) species. Either SO2(3B1) molecules were created with an unexpectedly high efficiency in 3130 Å excited SO2(1B1) quenching collisions, or another reactive triplet (presumably 3A2 or 3B2) of almost identical reactivity to SO2(3B1) was important here.
High‐temperature pyrolysis of acetaldehyde
Authors: Colket M. B. , Naegeli D. W. , Glassman I. 
Published: January 2005

AbstractHigh‐temperature (>1000°K) pyrolysis of acetaldehyde (∼1% in an atmosphere of pure nitrogen) was examined in a turbulent flow reactor which permits accurate determination of the spatial distribution of the stable species. Results show that the products in order of decreasing importance are CO, CH4, H2, C2H6, and C2H4. Rates of formation were consistent with the Rice–Herzfeld mechanism by including reactions to explain C2H4 formation and the possible presence of ketene. A steady‐state treatment of the complete mechanism indicates that the overall reaction order decreases from \documentclass{article}\pagestyle{empty}\begin{document}$ \frac{3}{2} $\end{document} to 1, which is supported by the new experimental data. Using earlier low‐temperature results, the rate constant for the reaction CH3CHO → CH3 + CHO (1) was found as k1=1015.85±0.21 exp (−81,775±1000/RT) sec−1. Also, data for the ratio of rate constants for reactions CH3CHO + CH3 → CH4 + CH3CO (4) and 2CH3 → C2H6(6) were fitted to the empirical expression k4/k61/2=10−13.89±0.03T6.1 exp(−1720±70/RT) (cm3/mole·sec)1/2 and causes for the curvature are discussed. The noncatalytic effect of oxygen on acetaldehyde pyrolysis at high temperature is explained.
Competitive study of the reactions Br + RFI → IBr + RF and determination of bond dissociation energies D(RF−I) where RF = CF3, C2F5, n‐;C3F7, i‐C3F7, and n‐C4F9
Authors: Okafo Ernest N. , Whittle Eric 
Published: January 2005

AbstractThe overall photobromination reactions

have been studied using a competitive technique. Relative Arrhenius parameters were obtained for the rate‐determining step
equation image
These were placed on an absolute basis using previous‐absolute values of A and E for RFI=CF3I. The activation energies were used to calculate bond dissociation energies D(RI) with the following results:

RF−
E16
D(RF−I)(kcal/mole)

CF3I
10.8
52.6

C2F5I
8.8
50.6

n‐C3F7I
7.4
49.2

i‐C3F7I
7.5
49.2

n‐C4F9I
6.7
48.4

E16 from [1]

The D(RI) are compared with related D(RI) and it is concluded that for a given alkyl group RH and the corresponding perfuloroalkyl group RF, D(RI) > D(RI) whereas it has previously been found that D(RX;) < D(RX) where X is not iodine.
The oxidation of CFClCFCl and CF2CCl2
Authors: Sanhueza Eugenio , Heicklen Julian 
Published: January 2005

AbstractThe oxidation of CFClCFCl and CF2CCl2 were studied at room temperature by chlorine‐ and oxygen‐atom initiation. The chlorine‐atom initiated oxidation of CFClCFCl yields CCl2FCF(O) as the exclusive product. Its quantum yield is ∼420, which gives k3a/k3b=210 where reactions (3a) and (3b) are
equation image
The O(3P)CFClCFCl reaction gives CClFO with a quantum yield of 0.80, polymer, and small amounts of an unidentified product which is probably cyclo‐(CFCl)3. Thereaction paths are
equation image
with k9a/k9=0.80. The overall reaction of O(3P) with CFClCFCl proceed one fifth as fast as the O(3P)‐C2F4 reaction. When O2 is also present, the same free‐radical chain oxidation occurs by O(3P)initiation as by chlorine‐atom initiation.The chlorine‐atom initiated oxidation of CF2CCl2 gives CF2ClCCl(O) as the major product, with quantum yields ranging from 42 to 85. Smaller amounts of CF2O and CCl2O are produced in equal amounts with quantum yields of ∼3.5. The reactions responsible for the products are
equation image
The O(3P)‐CF2CCl2interaction yields CF2O and
equation image
with quantum yields of 1.0 and ∼0.85, respectively. In thepresence of O2 the radical chain products are observed, but the mechanism is different than that for other chloroolefins.
The kinetics of the deparotonation of tropaeolin O
Authors: Perlmutter‐Hayman Berta , Shinar Ruth 
Published: January 2005

AbstractThe reaction between tropaeolin O and hydroxyl ions has been reinvestigated in the pH range between 10.8 and 12.2 at 25°C and an ionic strength I of 0.1 M, using the T‐jump method. The rate constants obtained from results at pH ≥ 11.66 are in satisfactory agreement with previous data. At lower pH, however, the rate is found to increase with decreasing hydroxyl‐ion concentration. A mechanism which is compatible with these results is proposed and discussed. The dissociation constant of the last proton at I=0.1 M has been redetermined and found to be in satisfactory agreement with values given in the literature.
Shift of the rate‐determining step in a consecutive chemical reaction with variation of the reaction affinity
Authors: Enyo M. 
Published: January 2005

AbstractA consecutive single‐route reaction is considered. When two (groups of) steps compete in controlling the overall reaction rate, there exists a general rule that the earlier step in the flow of the overall reaction tends to be rate‐determining with the increase of the reaction affinity. The latter may, however, be distributed more or less evenly to both steps.
Pyrolysis of [5‐14C]‐1‐pentene–evidence for homoallylic rearrangements at 873 K
Authors: Kopinke F.‐D. , Zimmermann G. , Bach G. , Ondruschka B. 
Published: January 2005

AbstractIt was found that the pyrolysis of [5‐14C]‐1‐pentene gives radioactive 1,3‐butadiene. This result can be explained in terms of a sequence of free radical rearrangements of 1‐penten‐3‐yl radicals. From this and additional information on isotope distribution in butadiene formed from different deuterated 1‐pentenes, we conclude that homoallylic rearrangement of 1‐penten‐4‐yl and 2‐penten‐5‐yl radicals is the dominant route for their consumption.
Kinetics of the solvolysis of the trans‐chloroazidobis(diaminoethane)cobalt (III) ion in water + t‐Butyl Alcohol Mixtures
Authors: Eid Ali E. , Wells Cecil F. 
Published: January 2005

AbstractThe kinetics of the solvolysis of the ion trans‐[Coen2N3Cl]+ have been investigated at several temperatures in mixtures of water with t‐butyl alcohol with concentrations of the latter ranging up to 50 vol% or a mol fraction of 0.16. Values for the enthalpy and entropy of activation show sharp changes with changing solvent composition which can be correlated with extrema in the physical properties of the mixture concerned with sharp changes in solvent structure. Plots of log(rate constant) against the reciprocal of the dielectric constant and against the Grunwald‐Winstein Y factor are both curved. The application of a free energy cycle shows that the effect of changes in solvent structure on the solvolysis dominates on the cobalt(III) cation in the transition state over that on the cation in the initial state.
Gas‐phase thermolysis of sulfur compounds. Part VIII. Chloromethyl allyl, cyanomethyl allyl, 1‐cyanoethyl allyl and neopentyl allyl sulfides
Authors: Martin Gonzalo , Martinez Henry , Suhr Harald , Suhr Ursula 
Published: January 2005

AbstractThe pyrolyses of four alkyl allyl sulfides with substituents on the αC atom of the alkyl moiety have been studied in a stirred‐flow system over the temperature range 340‐400°C and pressures between 2 and 12 torr. The only products formed are propene and thioaldehydes. The reactions showed first‐order kinetics with the rate coefficients following the Arrhenius equations: Chloromethyl allyl sulfide:

Cyanomethyl allyl sulfide:

1‐cyanoethyl allyl sulfide:

Neopentyl allyl sulfide:

The effects of these and other substituents on the reactivity is discussed in relation with the stabilization of a polar six‐centered transition state. The results support a non‐concerted mechanism where the 1–5 αH atom shift is assisted by its acidic character.
The high temperature pyrolysis of ethylbenzene: Evidence for dissociation to benzyl and methyl radicals
Authors: Mizerka L. J. , Kiefer J. H. 
Published: January 2005

AbstractThe pyrolysis of ethylbenzene has been investigated in shock waves with the laser schlieren technique. Mixtures of 1 and 2% ethylbenzene in krypton were studied for reaction conditions of 1300‐1800 K, 70‐550 torr. At high temperatures, the initial rapid endothermic dissociation is followed by a region of net exothermic reaction, which is readily understood as arising mainly from methyl radical recombination after dissociation to methyl and benzyl radicals. The initial unimolecular dissociation rates show no detectable dependence on pressure; with ΔH0298 = 75.7 kcal mol−1 these rates are

An RRKM extrapolation suggests

in excellent agreement with previous lower temperature data.
Kinetics of the solvolysis of the trans‐dichlorobis(1,2‐diaminoethane)‐cobalt(III) Ion in water + urea mixtures
Authors: Groves Grahame S. , Wells Cecil F. 
Published: January 2005

AbstractFollowing the kinetic investigation of the solvolysis of a range of cobalt(III) complexes in mixtures of water + cosolvent wherethe cosolvent enhances the solvent structure and decreases the dielectric constant, kinetic data are now reported for such a solvolysis in water + urea where urea acts as a structure breaker and enhances the dielectric constant. A plot of log (rate constant) against reciprocal of the dielectric constant shows that differential effects of changes in solvent structure occur between the initial and the transition states and, as in theinvestigations using structure‐enhancing cosolvents, the principal effect of change in solvent structure on the cobalt(III) cation occurs on the penta‐coordinated ion in the transition state.
Rate constants for the reactions of isobutyl, neopentyl, cyclopentyl, and cyclohexyl radicals with molecular oxygen
Authors: Wu Dihua , Bayes Kyle D. 
Published: January 2005

AbstractRate constants have been measured for the reactions of four hydrocarbon radicals with O2 in the gas phase at room temperature. Laserflash photolysis was used to generate low concentrations of radicals. A photoinization mass spectrometer followed the radical loss as a function of time. The measured pseudo first‐order decay rate of the radical and the absolute oxygen concentration were combined to give the absolute rate constants (in units of 10−12 cm3 molec−1 s−1): isobutyl (2.9 ± 0.7); neopentyl (1.6 ± 0.3); cyclopentyl (17 ± 3); and cyclohexyl (14 ± 2). The cycloalkyl radicals have rate constants similar to those of other secondary radicals. However, the isobutyl and neopentyl radicals react more slowly than similar primary radicals. These new rate constants are compared in Figure 2 with the recently published correlation of reactive cross section with radical ionization potential.
Kinetics of the reactions of naphthalene, 2‐methylnaphthalene, and 2,3‐dimethylnaphthalene with OH radicals and with O3 at 295 ± 1 K
Authors: Atkinson Roger , Aschmann Sara M. 
Published: January 2005

AbstractThe kinetics of the gas‐phase reactions of naphthalene, 2‐methylnaphthalene, and 2,3‐dimethylnaphthalene with O3 and with OH radicals have been studied at 295 ± 1 K in one atmosphere of air. Upper limit rate constants for the O3 reactions of <3 × 10−19, <4 × 10−19, and <4 × 10−19 cm3 molecule−1 s−1 were obtained for naphthalene, 2‐methylnaphthalene, and 2,3‐dimethylnaphthalene, respectively. For the OH radical reactions, rate constants of (in units of 10−11 cm3 molecule−1 s−1) 2.59 ± 0.24, 5.23 ± 0.42, and 7.68 ± 0.48 were determined for naphthalene, 2±methylnaphthalene, and 2,3‐dimethylnaphthalene, respectively. These data show that under atmospheric conditions these naphthalenes will react mainly with the OH radical, with life‐times due to this reaction ranging from ca. 11 h for naphthalene to ca. 4 h for 2,3‐dimethylnaphthalene.
Kinetic analysis of the disproportionation of aqueous glyoxal
Authors: Fratzke Alfred R. , Reilly Peter J. 
Published: January 2005

AbstractRates of disproportionation of 0.015–0.4 mM aqueous glyoxal toglycolic acid were measured at 0.24–75 mM NaOH and constant ionic strength, leading to the empirical rate expression r = (a1[OH−] + a2[OH−]2) [GT]/(1 + a3[OH−]), where [GT] is the total glyoxal concentration. These results were confirmed in bicarbonate/carbonate buffer and at 2–20 mM [GT]. The rate form is in contradiction to earlier work on glyoxal, which suggested a second‐order dependence on [OH−], but agrees with the rate equation for phenylglyoxal disproportionation. The kinetic data can be explained by a mechanism postulating the presence of monohydrated and dihydrated forms of glyoxal in equilibrium, with the rate‐limiting steps being intramolecular hydride ion transfers to the unhydrated carbonyl carbon of the mono‐ and divalent anions of glyoxal monohydrate.
Thermodynamic and kinetic analysis of the dimerization of aqueous glyoxal
Authors: Fratzke Alfred R. , Reilly Peter J. 
Published: January 2005

AbstractEquilibria and rates of interconversion between monomeric and dimeric glyoxal were measured in aqueous solution. The equilibrium constant [G2]/[G1]2 was 0.56 M−1 at 25°C, and was hardly affected by changes of ionic strength and pH but increased rapidly with increase of temperature. The rate of depolymerization was first‐order in dimer, with the pseudo first‐order rate coefficient in the pH range 1.3–7.8being of the form b1[H3O+] + b2 + b3[OH−]/(1 + b4[OH−]) + b5[OH−]. Coefficients b1 and b2 were more strongly affected by changes of temperature, though [OH−] was much the more effective catalyst. This rate form has not previously been observed for monomer‐dimer inter‐conversion of α‐hydroxycarbonyls and α‐dicarbonyls or for related reactions such as mutarotations and hydrations. Equivalent rate forms arisefrom reactions where an intermediate at steady state and low concentration is produced.
Unified approach for Euler–Lagrange equation arising in calculus of variations
Authors: Naidu D. S. , Imura Y. 
Published: January 2005

AbstractWe address the development of a unified approach for the necessary conditions for optimization of a functional arising in calculus of variations. In particular, we develop a unified approach for the Euler–Lagrange equation, that is simultaneously applicable to both shift (q)‐operator‐based discrete‐time systems and the derivative (d/dt)‐operator‐based continuous‐time systems. It is shown that the Euler–Lagrange results that are now obtained separately for continuous‐ and discrete‐time systems can be easily obtained from the unified approach. An illustrative example is given. Copyright © 2005 John Wiley & Sons, Ltd.
Surface modification of sisal fibers: Effects on the mechanical and thermal properties of their epoxy composites
Authors: Gañan Piedad , Garbizu Saioa , Llano‐Ponte Rodrigo , Mondragon Iñaki 
Published: January 2005

AbstractThe aim of this paper is to evaluate the mechanical and thermal properties of sisal fiber reinforced epoxy matrix composites as a function of modification of sisal fiber by using mercerization and silane treatments. The changes introduced by the treatments on the chemical structure of sisal fibers have been analyzed by infrared spectroscopy (FTIR). Thermal behavior of both sisal fibers and composites has been studied by thermogravimetric analysis (TGA). Both treatments clearly enhanced thermal performance and also mechanical properties of fibers, being other physical properties also modified. Mercerization, above all when combined with silanization, led to significant enhancement on mechanical properties of composites as a consequence of increasing mechanical properties of fibers and improving fiber/matrix adhesion. POLYM. COMPOS., 26:121–127, 2005. © 2005 Society of Plastics Engineers
Zur Kenntnis der komplexen anorganischen Säuren. III. Abhandlung
Authors: Kehrmann F. 
Published: January 2005

AbstractMan kann die in der vorstehend gegebenen Übersicht niedergelegten bisherigen Ergebnisse meiner Untersuchung der komplexen Phosphorwolframsäuren folgendermassen aussprechen:Beim Zusammenbringen wolframsaurer Salze mit Phosphorsäure oder Phosphaten unter verschiedenen Versuchsbedingungen findet die Bildung einer ganzen Anzahl aus Wolframsäure, Phosphorsäure und Basis bestehender, verwickelt zusammengesetzter, meist wasserhaltiger Salze statt, deren zugehörige Säure sich in vielen Fällen in freiem Zustande erhalten läst, während andere Salze nur als solche beständig sind.
Über die Dichte und Ausdehnung des weißen und grauen Roheisens im flüssigen und festen Zustande. (Dichtemessungen bei hohen Temperaturen. VIII.)
Authors: Sauerwald F. , Widawski E. 
Published: January 2005

AbstractDas weiße Roheisen weist bei hohen Temperaturen im festen Zustande durchaus normale, im Sinne bekannter Gefügeänderungen verlaufende Volumengestaltung auf, ebenso beim Übergang in den flüssigen Zustand; die früher bei grauem Gußeisen bei langsamer Erwärmung zwischen 900 und 1000° festgestellte Kontraktion wurde dilatometrisch bestätigt, dabei war es möglich, als dieser Kontraktion voraufgehend und von ihr getrennt die der Perlitauflösung zugehörige dilatometrisch zu ermitteln. Das bis auf etwa l% gleiche spezifische Volumen des geschmolzenen weißen und grauen Eisens und ein sehr nahe gleicher Ausdehnungskoeffizient wurde erneut festgestellt. Die Bedingtheit der Kontraktion des festen grauen Eisens durch Graphitauflösung wurde somit sichergestellt, ebenso die früheren Schlüsse über die Bildung von Zementit beim Schmelzen des grauen Eisens. Eine Änderung des Volumens flüssigen Eisens bei konstanter Temperatur konnte wiederum nicht gefunden werden.
Über Adsorption. Nr. 9. Über die Adsorption von Gasen durch Holzkohle im Gebiete niedriger Drucke
Authors: Magnus A. , Cahn L. 
Published: January 2005

Abstract1. Die Adsorption von Ammoniak und Kohlendioxyd wurde an Holzkohle bei verschiedenen Temperaturen und wechselndem Entgasungsgrad der Kohle bis zu Drucken unterhalb 0,001 mm untersucht.
Etwas über Phasengleichgewichte bei Sulfaten. II
Authors: Jänecke Ernst 
Published: January 2005

AbstractDie Bedenken gegen die Darstellung des Systems PbS0 nach Herrn Schenck wurden aufrecht erhalten. Es wurde darauf hingewiesen, daß von Herrn Schenck außer Biei auch Sauerstoff im Dampf vernachlässigt worden ist.
Adsorption von Säuren, Basen und Salzen durch frischgefällte Kieselsäure
Authors: Mehrotra M. R. , Dhar N. R. 
Published: January 2005

AbstractEs sind Adsorptionsversuche ausgeführt worden mit frischgefällter und gut ausgewaschener Kieselsäure und Essig‐, Propion‐. Butter‐, Citronen‐, Benzoe‐, Salicyl‐, Hippur‐, Schwefel‐, Salpeter‐ und Chlorwasserstoffsäure. Die prozentische Menge der Adsorption bei diesen Säuren geht nicht über 2,7 hinaus.
Fluorescenz, Phosphorescenz, Chemiluminescenz und Aktivierung von Molekeln
Authors: Dhar N. R. 
Published: January 2005

AbstractBei der Erscheinung der Phosphorescenz ist die Lebensdauer der aktivierten Molekeln verlängert. Der Hauptunterschied zwischen Phosphorescenz und Fluorescenz liegt in der Verlängerung der Lebensdauer der aktivierten Molekeln bei der ersten Erscheinung. Beispiele, bei denen eine Verlängerung der Lebensdauer aktivierter Molekeln stattfindet, sind angegeben worden.
Zur Photochemie der Alkali‐ und Erdalkalijodide
Authors: Stobbe Hans , Steinberger Franz Karl 
Published: January 2005

AbstractNeutrale Alkalijodidlösungen sind bei Abwesenheit von Luft lichtbeständig. Dagegen erfahren sie bei der Belichtung unter kohlensäurehaltiger Luft zwei voneinander unabhängige Zersetzungen. Der erste als Hauptreaktion zu bezeichnende Vorgang beruht auf der durch die Kohlensäure hervorgerufenen Bildung von Jodwasserstoff und auf dessen Oxydation zu Wasser und Jod.
Über die innere Reibung geschmolzener Metalle und Legierungen. III. Die innere Reibung von Kupfer, Antimon, usw und Kupfer–Antimon‐, Kupfer–Zinn‐, Blei–Wismut‐Legierungen
Authors: Bienias A. , Sauerwald F. 
Published: January 2005

AbstractEs wurde mitgeteilt, auf welche Weise das früher schon verwendete Resultat, daß die HAGENBACH'sche Korrektur mit dem Faktor 1 zu berechnen sei, durch direkte Beobachtung des zeitlichen Verlaufs des Durchflusses durch den Capillarapparat gewonnen wurde.
Über die Verwendbarkeit der elektrometrischen Titration zur Löslichkeitsbestimmung schwerlöslicher Oxyde
Authors: Busch Werner 
Published: January 2005

AbstractDie Verwendbarkeit der elektrometrischen Titration in der Alkalimetrie bzw. Acidimetrie wurde für das Gebiet stark verdünnter Lösungen nachgewiesen und die Fehlergrenzen fü die Titrationen von n/1000‐Lösungen zu 0,3 − 0,5.10−3 Grammäquivalenten ermittelt.
Über Das ternäre System Blei‐Antimon‐Arsen
Authors: Abel E. , Redlich O. 
Published: January 2005

AbstractDas System PbSbAs wurde nach den Methoden der thermischen und mikrographischen Analyse untersucht. Die Eigenschaften dieses Systems entsprechen im wesentlichen dem Typus: zwei Bestandteile im festen Zustand vollkommen mischbar, Mischkristalle im dritten Bestandteil unlöslich. Die Lage der eutektischen Kristallisationen ist der Fig. 5 zu entnehmen.
Über Dreistoffsysteme mit Eisen und Kohlenstoff. I. Die Phasen „Fe3C · Cr4C’︁ und Cr10C6Fe3, die „physikalische Rückstandsanalyse”︁
Authors: Sauerwald F. , Neudecker H. , Rudolph J. 
Published: January 2005

AbstractEs wurde für die Kohlenstoffbestimmung in Legierungen mit hohem Cr und C‐Gehalt fein verteiltes Kupfer als Zuschlag empfohlen.Es wurde zur Untersuchung von Mehrstoffsystemen die Anwendung einer Untersuchungsmethode, die man ah „physikalische Rückstandsanalyse”︁ bezeichnen kann, vorgeschlagen und in einem Fall als brauchbar erwiesen.
Über einige Reaktionen und Komplexverbindungen der Rhodanwasserstoffsäure
Authors: Ormont B. 
Published: January 2005

AbstractI. a) Wenn man zu einer Lösung von KCNS (bzw. NH4 CNS), von der Konzentration 1:2, tropfenweise 80–90%ige H2SO4 zu‐gibt, so wird nach 1–2 Minuten die Lösung gelb; das so erhaltene Reagens unterscheidet sich nach seinen Eigenschaften wesentlich vom neutralen KCNS.
Zur Kenntnis der Tulalegierung. (Eine Untersuchung über das Dreistoffsystem Cu2SAg2SPbS.)
Authors: Schwarz Robert , Romero Alfonso 
Published: January 2005

AbstractDie vorliegende Arbeit setzt sich das Ziel, das Wesen der unter dem Namen Tula bekannten Legierung chemisch und metallographisch zu ergründen.