Reciprocal Net Site sponsor
   Site Info    |    Search
Realgar - Reciprocal Net Common Molecule Log in
You will need to download and install a Java plug-in in order to view this applet. Download Sun's Java plug-in from here.
TIP > Click and drag your mouse inside the applet above to rotate the molecule in 3-D. Applet instructions...

Switch to another visualization applet:

> miniJaMM open in new window...
- JaMM1
- JaMM2

Realgar

A rare soft red to orange-yellow sulfide with a sub-metallic luster.

Chemical Formula: AsS
Other names: Arsenic(II) sulfide
Layman's explanation: Realgar was named in 1747 from the Arabic word for "powder of the mine." It is an unstable mineral and will change to pararealgar, eventually disintegrating to a powder. This process takes time and is accelerated by exposure to light. Deterioration occurs very slowly, but the process begins immediately with only a little exposure. In old paintings and manuscripts, realgar was a common pigment for paints and dyes. Some ancient Chinese carvings of realgar are still in existence, but badly affected by the deterioration. Many of these paintings now have a yellow or orange hue where once the color must have been an original red. Realgar can be synthesized, and is a commonly used pigment even today.
Keywords: paint, pigment, arabic, pararealgar

Reciprocal Net site software 0.9.1-50, copyright (c) 2002-2009, The Trustees of Indiana University
Files and data presented via this software are property of their respective owners.
Reciprocal Net is funded by the U.S. National Science Foundation as part of the National Science Digital Library project. NSDL