Results 171 to 180 of about 288,124 (245)

Spectrophotometric determination of osmium with ammonium thiocyanate

Fresenius' Zeitschrift für analytische Chemie, 1968
A spectrophotometric method for the determination of osmium using ammonium thiocyanate is described. A stable reddish brown colour with an absorption maximum at 440 nm is produced when osmium tetroxide is heated for 30 min at a pH between 1 to 4 over a boiling water bath with excess reagent.
Mohsin Qureshi, Kishore N. Mathur
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Molecular tunneling dynamics of NH3D+ in ammonium sulfate and ammonium thiocyanate

The Journal of Chemical Physics, 1993
The kinetics of NH3D+ rotation in ammonium sulfate and ammonium thiocyanate are measured at low temperature (8–60 K). Infrared hole burning of the N–D stretching bands causes reorientation of the ions among distinct positions relative to the crystal lattice, producing nonequilibrium population distributions.
Herbert L. Strauss, Wes Burrows
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Effects of ammonia/ammonium thiocyanate on cotton fabric [PDF]

Journal of Polymer Science Part A: Polymer Chemistry, 1987
AbstractThe effect of ammonia/ammonium thiocyanate (NH3/NH4SCN) treatment of the swelling behavior, structural changes, and physical properties of cotton sheeting was compared with that of sodium hydroxide and liquid ammonia mercerization. Increased percent shrinkage, accessibility to a large dye molecule, dyestuff absorption, swelling with water, and ...
Paul A. Tucker, Hope L. Bober, John A. Cuculo   +2 more
openaire   +1 more source

Ammonium Thiocyanate-Passivated CsPbI3 Perovskite Nanocrystals for Efficient Red Light-Emitting Diodes

Journal of Physical Chemistry C, 2019
Lead halide perovskite nanocrystals (NCs) as a promising material have been widely applied in optoelectronic devices, but the massive defects reduce their optical properties and consequently limit ...
Min Lu, Jie Guo, Po Lu, Liu Zhang, Ying Zhang, Qilin Dai, Yue Hu, V. Colvin, William W. Yu   +8 more
semanticscholar   +1 more source

Microbiological Oxidation of Ammonium and Thiocyanate Ions in Soil

Nature, 1951
AMMONIUM sulphate1 and sodium thiocyanate2, when perfused through chalked soils neutralized by calcium carbonate, are metabolized by the growth of specific groups of soil microflora on the soil crumb surface to nitrate and ammonium sulphate respectively.
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Volumetric determination of copper by precipitation with ammonium thiocyanate

Proceedings of the Indian Academy of Sciences - Section A, 1977
Potassium dichromate was employed for the determination of copper by precipitation as cuprous thiocyanate. 1·0–10·0 mg of copper was accurately determined by this procedure. The method was applied for the analysis of copper in Devarda’s alloy and chalcopyrites.
N. Appala Raju, B. V. Narayana
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Copper-catalyzed thiocyanation of cyclobutanone oxime esters using ammonium thiocyanate

Organic & Biomolecular Chemistry
A copper-catalyzed thiocyanation of cyclobutanone oxime esters by potassium ammonium thiocyanate was achieved for the first time. Subsequent derivatization of thiocyano substituted alkylnitriles led to various sulfur-containing alkylnitriles.
Xia Zhao, Tengteng Sun, Wenxin Gu, Jingwen Qin, Kui Lu, Fei Ye   +5 more
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The corrosion of mild steel by aqueous ammonium thiocyanate

Journal of Applied Chemistry, 1957
AbstractMild steel was exposed at room temperature and in stagnant conditions to aqueous 1·0N‐ and 0·1N‐ammonium thiocyanate at various pH values, to ascertain the respective pH‐ranges of (1) uniform attack, (2) localized attack and (3) complete inhibition. For comparison, similar experiments were made with ammonium chloride and with ammonium sulphate.
R. Williams, L. A. Ravald, J. W. Chilver
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Solid polymer electrolytes from NaAlg: PVA: effect of ammonium thiocyanate on ionic conductivity

Journal of Materials Science: Materials in Electronics, 2023
R. Jansi, S. Shenbagavalli, M. Revathy, S. Deepalakshmi   +3 more
semanticscholar   +1 more source

Investigation of N–S-based graphene quantum dot on sodium alginate with ammonium thiocyanate (NH4SCN) biopolymer electrolyte for the application of electrochemical devices

Journal of Materials Science: Materials in Electronics, 2022
N. Vanitha, C. Shanmugapriya, S. Selvasekarapandian, M. Krishna, K. Nandhini   +4 more
semanticscholar   +1 more source