Thermodynamic Characterization of High-Temperature Superconductors in the Yttrium-Barium-Copper-Oxygen System. The Y123 Solid Solution

July 2009

The aim of this report is to inform the chemical community about a selfconsistent thermodynamic data set for the YBa2Cu3O6+z (1 ≥ z ≥ 0) solid solution, that is well known as the Y123 phase and possesses superconducting properties at z~1 and low temperatures. About 3300 experimental points obtained in 240 miscellaneous experiments published in [...]

Education at a Distance: Experimental General Chemistry Instructional Materials for the Brazilian Open University

July 2009


The modality of open education is being adopted strategically to reduce the deficit of teaching personnel in different areas, including chemistry. Because of this, educational materials were developed that aim to collaborate with the General Chemistry courses for Teaching Certificates in Chemistry, to be offered through the System of the Brazilian Open University (BOU). For [...]

Periodic Table

July 2009 (67 kB)
This is a freeware program that provides general information about the first 103 elements of the Periodic Table. It was developed by Aaron Andersen. Read the file Readme.txt before using the program.
In English

The Use of Analytical Balance (10,55 MB)
This multimedia application, produced by the Chemkeys team and Apex Digital, describes the care needed to properly operate an analytical balance. It is an application for educational use and can be copied and used for non-profit applications only if all the original files are included in the copy, without modification. The computational [...]

The Use of the SI system (0,76 MB)
The multimedia application “The use of the SI system – the need for standardization of measurements, prepared in” Flash “, describes the units proposed by the International System of Units and demonstrates its applications in chemistry. It is an application for educational use and can be copied and used for non-profit applications only [...]

Quantitative Analysis for Chromatography (4,8 MB)
In the multimedia application “Quantitative Analysis for Chromatography,” thin layer chromatography (TLC) is used as the theme to describe fundamental and experimental concepts, such as the analytical curve and the use of external and internal standards in quantitative analysis, as well as presenting processing of data through the identification and rejection of anomalous [...]

Factorial designs using a PDA with PalmOS platform (0,70 MB)
The Personal Digital Assistant (PDA), a portable device, has the advantages of a computer and can still become a very useful tool in situations where mobility is required. Applications that use the PalmOS operating system, also have the advantage of being small programs, with optimized instructions. It is known that factorial design is [...]

Printing sheets for graphics – version 4.03

gpaper.exe (384 KB)
Now you can print your own sheets for graphics (20 options). This program is free and of unlimited use. You can use it at home, at school or at work. The author, as a reward for his work, only requires sending a postcard from your geographic region, posted with a pretty stamp for [...]

Glossary of Terms Related to Solubility

September 2008

Phenomena related to the solubility of solids, liquids, and gases with one another are of interest to scientists and technologists in an array of disciplines. The diversity of backgrounds of individuals concerned with solubility creates a potential for confusion and miscommunication and heightens the need for an authoritative glossary of terms related to solubility. This [...]

Impact of Scientific Developments on the Chemical Weapons Convention

August 2008

This report summarizes the findings and recommendations of an international workshop that was organized jointly by IUPAC and the Organisation for the Prohibition of Chemical Weapons (OPCW), and held in Zagreb, Croatia, from 22 to 25 April 2007. It was held to assist with preparation for the Second Review Conference of the Chemical Weapons Convention [...]