Inoxia Chemical Supplies

This is sold as a fine powder which passes 300 mesh. This material is the Rhombic, or roll form of sulphur, which is considered to be better suited for use in fireworks than Flowers of Sulphur.
A cheaper, granular material is also available.

Particle size: <300 mesh
Colour: Yellow
Odour: Odourless, or very faint odour of rotten eggs
Solvent: Carbon Disulphide
Formula: S₈
Melting Point: ~116ºC
Boiling Point: 445ºC
Flash Point: ~250ºC