Vapour pressures of saturated aqueous solutions of ammonium iodide, potassium iodide, potassium nitrate, strontium chloride, lithium sulphate, sodium thiosulphate, magnesium nitrate, and uranyl nitrate fromT=(278 to 323) K

1998 ◽  
Vol 30 (4) ◽  
pp. 459-471 ◽  
Author(s):  
Alexander Apelblat ◽  
Eli Korin
Keyword(s):  
Aqueous Solutions ◽  
Potassium Iodide ◽  
Uranyl Nitrate ◽  
Potassium Nitrate ◽  
Magnesium Nitrate ◽  
Strontium Chloride ◽  
Ammonium Iodide ◽  
Sodium Thiosulphate ◽  
Lithium Sulphate

scholarly journals Metallkomplexe mit 1,4,7-Trithiacyclononan: Kristallstrukturen von [CdI2 · C6H12S3]2 und [Hg(C6H12S3)2](HgI3)2 / Metal Complexes with 1,4,7-Trithiacyclononane: Crystal Structures of [CdI2 · C6H12S3]2 and [Hg(C6H12S3)2](HgI3)2

1993 ◽  
Vol 48 (7) ◽  
pp. 969-972 ◽  
Author(s):  
Joachim Pickardt ◽  
Jing Shen
Keyword(s):  
Aqueous Solutions ◽  
Metal Complexes ◽  
Crystal Structures ◽  
Potassium Iodide ◽  
Cadmium Iodide ◽  
Mercuric Iodide ◽  
Space Group

Crystals of the complexes [CdI2 · C6H12S3]2 (1) and [Hg(C6H12S3)2](HgI3)2 (2) were obtained by diffusion of 1,4,7-trithiacyclononane (9 S 3) in ethanol into aqueous solutions of cadmium iodide and mercuric iodide/potassium iodide, resp. Both compounds crystallize monoclinically,1: space group P21/n, Z = 4, a = 1207.1(5), b = 909.9(2), c = 1240.3(7) pm, β = 92.59(9)°; 2: P21/c, Z = 2, a = 804.7(6), b = 934.0(6), c = 2167.9(4) pm, β = 94.34(7)°. 1 is dimeric, consisting of two [CdI2 · 9S3] units, connected via iodine bridges. Crystals of 2 contain sandwich-like cations [Hg(9S3)2]2+ and [HgI3]- anions, forming chains via Hg ··· S and Hg ··· I bridges.

scholarly journals Effect of 10% Strontium Chloride and 5% Potassium Nitrate with Fluoride on Bleached Bovine Enamel

2017 ◽  
Vol 11 (1) ◽  
pp. 476-484 ◽  
Author(s):  
Cristiane de Melo Alencar ◽  
Victor Feliz Pedrinha ◽  
Jesuína Lamartine Nogueira Araújo ◽  
Renata Antunes Esteves ◽  
Ana Daniela Silva da Silveira ◽  
...  
Keyword(s):  
Morphological Changes ◽  
Dental Enamel ◽  
Potassium Nitrate ◽  
Color Variation ◽  
Strontium Chloride ◽  
Paired Data ◽  
Tristimulus Colorimetry ◽  
Intergroup Comparison ◽  
Bovine Enamel

Background: Dental whitening has been increasingly sought out to improve dental aesthetics, but may cause chemical and morphological changes in dental enamel surfaces. Objective: This study evaluated in vitro the effect of 10% strontium chloride and 5% potassium nitrate with fluoride on bovine enamel, through tristimulus colorimetry, Knoop microhardness (KHN), and roughness after bleaching with 35% hydrogen peroxide (HP). Methods: The specimens were divided into three groups (n=15): GControl received bleaching treatment with 35% HP; GNitrate received bleaching with 35% HP followed by the application of 5% potassium nitrate with 2% sodium fluoride; and GStrontium received bleaching with 35% HP followed by the application of 10% strontium chloride on the enamel. Next, five specimens of each experimental group were subjected to KHN and tristimulus colorimetry tests, and 10 specimens were subjected to surface roughness (SR) tests. The values obtained for the different groups were compared through analysis of variance (ANOVA) followed by a post-hoc Tukey-Kramer test in addition to Student’s T-test for paired data. Results: In the intergroup comparison, KHN final differed statistically (p<0.05). The mean SR final of the experimental groups differed statistically from the GControl group (p<0.05). In addition, the groups did not differ in color variation (p>0.05). Conclusion: 10% strontium chloride and 5% potassium nitrate combined with 2% fluoride downplayed morphological changes to the enamel, without interfering with the effectiveness of the bleaching process.

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