Detail of "15244-37-8"

Reference

Thermal decomposition of sulfates

Thermal decomposition of sulfates. Nagata, Kenji (Coal Carbon Div., Natl. Res. Inst. Pollut. Resour., Kawaguchi, Japan). Kogai Shigen Kenkyusho Iho, 3(3), 41-56 (Japanese) 1974. CODEN: KSKID9. DOCUMENT TYPE: Journal CA Section: 78 (Inorganic Chemicals and Reactions) DTA was applied to 7 kinds of sulfates for the purpose of investigating the thermal decompn. of a series of inorg. compds. Endothermic peaks obsd. in the thermographs of sulfates show 5 stages of thermal decompn. which arise from the thermal transitions of ionic crystal structures. But there is no endothermic peak which arises from dehydration. Two lower temps. of the 5 stages of thermal decompn. are closely related to ionic radii of metal ions. The smaller the ionic radii, the lower the temps. of thermal decompn. Two higher temps. of the 5 stages are strongly influenced by the pressures of the atm. The dehydration of crystal water was not found by DTA, although the samples had many mols. of crystal water. This suggests that crystal water of sulfates have vapor pressure if DTA of the sample with vacuum treatment differs from that of the sample without vacuum treatment.Except for chemicals metioned above, 22189-08-8 and 15244-37-8 are also used. .

Research report on measuring the Raman spectra of temperature-sensitive solid samples

Research report on measuring the Raman spectra of temperature-sensitive solid samples. West, Yvonne D. (Dep. Chem., Univ. Southampton, Highfield/Southampton SO17 1BJ, UK). Spectrochimica Acta, Part A: Molecular and Biomolecular Spectroscopy, 53A(1), 35-42 (English) 1997 Elsevier. CODEN: SAMCAS. ISSN: 0584-8539.Several substances with their cas registry numbers 187830-78-0 and 15244-37-8 may be metioned in this study. DOCUMENT TYPE: Journal CA Section: 73 (Optical, Electron, and Mass Spectroscopy and Other Related Properties) Problems arising in recording Raman spectra of temp.-sensitive samples because of the significant temp. rises (up to 40°) experienced when using relatively low (125 mW) laser powers can be minimized by using nujol mulls and pressed disks similar to those commonly employed for IR anal. This is illustrated by the use of a series of highly colored samples whose further anal. allows the optimized sampling parameters to be presented. .