Crystal Growth, Structure, and Thermal Analysis of K₂Cu(SO₄)₂·6H₂O Tutton Salt
DOI:
https://doi.org/10.59167/tujnas.v9i1.2055Keywords:
Potassium copper sulfate hexahydrate, Tutton salts, Crystal structure, Thermal analysis, Dehydration processAbstract
By using aqueous solutions of K2SO4 and CuSO4.5H2O with equal molecular ratios (1:1) light blue single crystals of K2Cu(SO4)2.6H2O (KCUSH) were prepared and grown by the slow evaporation technique of supersaturated aqueous solution at 309 K. X-ray diffraction measurements revealed the monoclinic structure, space group P21/a and Z = 2 for KCUSH crystal which is the structure of all Tutton salts family. The DTA and TGA measurements revealed that the evolution of the six water molecules of KCUSH takes place in two steps (two after four) at 351 K and 426 K respectively. It was found also that the two exothermic peaks at the end of DTA thermogram (792 K and 822 K) related to the material of the crucible (aluminum) in addition to the existence of Cu in our material KCUSH. By using platinum crucible, the two exothermic peaks disappeared and instead there is an endothermic peak at 796 K which refers to the melting process.
Downloads
Published
How to Cite
Issue
Section
Categories
License
Copyright (c) 2024 A.M. Abdulwahab , M.A. Gaffar , A. Abu El-Fadl
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
From July 2025 onward, all TUJNAS publications are licensed under the Creative Commons Attribution 4.0 International (CC BY 4.0) license. This open license allows anyone to share (copy and redistribute) and adapt (remix, transform, and build upon) the work in any medium or format, for any purpose (even commercially), as long as appropriate credit is given to the original author(s) and source. This permissive framework encourages scholarly innovation, translation, and integration into wider academic outputs by removing unnecessary legal barriers. Users of TUJNAS content must provide proper attribution and indicate if any changes were made to the original work. By enabling unrestricted reuse, the CC BY 4.0 license maximizes the reach and impact of research findings while ensuring that authors receive full recognition for their work. (For complete legal details of the CC BY 4.0 license, please refer to the official Creative Commons website.)
Submissions (from July 2025 onward): By submitting a manuscript to TUJNAS for publication (Volume 10, Issue 2, 2025 and thereafter), authors confirm the following:
- Originality: The submission is original, has not been published elsewhere, and is not under consideration by another journal.
- Copyright Retention: The author(s) retain copyright of the work, but grant TUJNAS a non-exclusive right to publish, reproduce, distribute, and archive the article.
- Open Access License: Upon acceptance, the article will be published open access under the CC BY 4.0 license.
- Repository Deposit: The author(s) agree that the full text and metadata of the article may be deposited in digital archives or repositories, to facilitate indexing and reuse under the CC BY 4.0 license.
- Indexing and Sharing: The author(s) acknowledge that TUJNAS may make the article available to third-party indexing, abstracting, and discovery services under the CC BY 4.0 license, without the need for additional permission.
These submission terms ensure that authors understand and consent to the open-access, licensed nature of TUJNAS publications from the outset.
