ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCarbon-13 NMR identification of cyclic ethyleneureas important in cellulosic textile finishingKarl Hermanns, C. Beat Meyer, and B. A. Kottes AndrewsCite this: Ind. Eng. Chem. Prod. Res. Dev. 1986, 25, 3, 469–472Publication Date (Print):September 1, 1986Publication History Published online1 May 2002Published inissue 1 September 1986https://pubs.acs.org/doi/10.1021/i300023a018https://doi.org/10.1021/i300023a018research-articleACS PublicationsRequest reuse permissionsArticle Views82Altmetric-Citations3LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access options Get e-Alerts

Fabrics padded with either N,N'-dimethyloldihydroxyethyleneurea (DMDHEU), 4,5-dihydroxyethyleneurea (DHEU), or N,N'-dimethylethyleneurea (DMeEU) were subjected to drying and curing conditions over a range of temperatures from ambient to 160°C. A portion of each fabric remained unwashed and a portion was given a neutral wash with a nonionic detergent. In all cases, 13C-NMR spectra of neutral extracts at 40°C or 80°C of the fabrics treated with DHEU or its derivatives revealed the presence of the reactants and, in the case of DMDHEU, formaldehyde, in ap proximately millimolar concentrations. The extracts of washed fabrics that had been treated with DMeEU contained no chemicals. The results confirm that the crosslinking reactions and the methylolation reactions are reversible, and indicate that permanent sorption of these chemicals on the cotton without reaction is unlikely. All DMDHEU treated fabrics released small amounts of formaldehyde when exposed to moisture and elevated temperature.

Urea-formaldehyde resin bonded partlcleboard, medium density fiberboard and plywood paneling are used as flooring, wall paneling, for cabinet work and in furniture, and are present In almost every office, home and public building. If large quantities of these products are used In poorly ventilated spaces, high manufacturing quality control is necessary to avoid problems of latent formaldehyde release. Indoor air formaldehyde concentrations depend on the nature of the product, the product surface to air volume (loading) factor, temperature, humidity, age and product emission rates. Standard test methods are now available for measuring product emission rates that make It possible to predict the performance of UF-bonded pressed wood materials If use conditions and environmental parameters are known. Recent modifications In adhesive and board manufacturing parameters have made It possible to reduce formaldehyde emission significantly, and UF-bonded wood products are now capable of meeting indoor air quality standard levels of 0.1 ppm under almost all customary loading conditions.

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPreparation and Raman spectra of thallium(I) disulfite and thallium(I) sulfiteLyle Peter and Beat MeyerCite this: Inorg. Chem. 1985, 24, 19, 3071–3073Publication Date (Print):September 1, 1985Publication History Published online1 May 2002Published inissue 1 September 1985https://pubs.acs.org/doi/10.1021/ic00213a040https://doi.org/10.1021/ic00213a040research-articleACS PublicationsRequest reuse permissionsArticle Views153Altmetric-Citations18LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose Get e-Alerts

The reaction of aqueous thiosulfate with formaldehyde was followed by C-13 NMR and Raman spectroscopy. At pH 7 no reaction was observed. In acidic solution, the only carbon containing compound formed was trithiane. No hydroxymethanesulfonate nor hydroxymethanesulfinate was observed. This indicates that intermediates in the reaction do not include sulfur oxyacids in oxidation states +2. +3, or +4. Therefore, the reaction involves auto-thiolysis of thiosulfate without redox reactions. Raman spectra reveal, in addition to trithiane, an equilibrium mixture of tri- and tetrathionate in a mole ratio corresponding to the overall stoichiometry: Ecess thiosulfate yielded elemental cyclooctasulfur, in addition to the above. Secondary reaction products correspond to those formed during the decomposition of polythionates.

AbstractSystems of copper(I), silver(I) and gold(I) cyanides dissolved in aqueous solutions of sodium thiosulphate in different molar ratios have been studied by Raman Spectroscopy. CuCN dissolves completely in aqueous thiosulphate solution in a 1:3 CuCN to S2O32− ratio, forming only mixed cyanothiosulphate species. No evidence was found for the formation of Cu (CN)2−, Cu(CN)32− or Cu(CN)43−. The mixed cyano copper complex was isolated as a white solid insoluble in water and most other solvents. The solid probably consists of a polymeric structure with bridging cyanide and thiosulphate. AgCN dissolves completely in aqueous thiosulphate solution in a 1:1 AgCN to S2O32− ratio, resulting in the formation of Ag(CN)2− and Ag(S2O3)23− species. As the concentration of thiosulphate increases Ag(CN)2(S2O3)3− and Ag(CN)2(S2O3)25− are formed. There is strong evidence for the existence of bridging silver thiosulphate complex in solutions of low S2O32− concentration. AuCN dissolves completely in aqueous thiosulphate solution in a 1:2 AuCN to S2O32− ratio, forming Au(CN)2−, Au(CN) (S2O3)2− and Au(S2O3)23−. No evidence was found for the formation of species of higher coordination number on increasing the concentration of S2O32−, which indicates that the linear two‐coordinate gold complexes are the most stable.

AbstractBei der Umsetzung von Formaldehyd (II) mit Natriumthiosulfat (‐I) wird als einziges Kohlenstoff‐haltiges Produkt das Trithian (III) gebildet.

ADVERTISEMENT RETURN TO ISSUEPREVArticleSecond dissociation constant of hydrogen sulfideB. Meyer, K. Ward, K. Koshlap, and L. PeterCite this: Inorg. Chem. 1983, 22, 16, 2345–2346Publication Date (Print):August 1, 1983Publication History Published online1 May 2002Published inissue 1 August 1983https://pubs.acs.org/doi/10.1021/ic00158a027https://doi.org/10.1021/ic00158a027research-articleACS PublicationsRequest reuse permissionsArticle Views839Altmetric-Citations88LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose Get e-Alerts

AbstractDas Raman‐Spektrum einer 16.9 N NaOH‐Lösung mit 0,10M NaClO4 und 0.6 M. H2S zeigt wesentliche Beiträge von nicht dissoziiertem HS′ (0.3 Mentsprechend ca. 50% des Gesamtsulfidgehaltes).

The decomposition of 0.25 M trithionate and 0.5 M tetrathionate was followed at 20, 35, 50 and 70°C. During the reaction tri-and tetrathionate interconvert. Thiosulfate is observed as a prominent intermediate. The end products are elemental sulfur, sulfate, disulfite and bisulfite. The decomposition of trithionate follows a first order reaction with a rate constant of 1.4 × 10−1 at 70°C. In tetrathionate the reaction is preceded by an induction period and is second order, with a rate constant of 4 × 10−3 at 20°C. In both systems sulfate is formed in a first order reaction with a rate constant of 3.1 × 10−3 hrs−1 at 20°C. The decomposition mechanism in both systems involves the hydrolysis of trithionate.