Tags: Chemical Compound, Chemical Substance.
The S3 molecule or trisulfur or sulfur trimer or thiozone or triatomic sulfur is an allotrope of sulfur. It occurs as a mixture in liquid and gaseous sulfur and also at cryogenic temperatures as a solid. Under standard conditions it is unstable and self reacts to solid sulfur cyclooctasulfur. The molecule shape is similar to ozone. S3 is found in sulfur vapour comprising 10% of vapour species at 713 K (440 °C; 824 °F) and 1333 Pa (10.00 mmHg; 0.1933 psi).
