Hydrogen sulphide, H₂S is a colourless, poisonous, highly toxic, corrosive, flammable, liquified gas with an offensive odour (rotten eggs).

Applications
Pure Hydrogen Sulphide is used:

• as a component in calibration gas mixtures for environmental monitoring systems
• in various chemical reactions.

Materials Compatibility
Metals: Stainless Steel; Carbon Steel; Aluminum; Monel; Inconel.
Plastics: Kel-F; PTFE, Tefzel.
Elastomers: Kalrez.

Technical Properties
Molecular Weight: 34.08
Specific Gravity (Air = 1): 1.189
Odour: Rotten eggs
CAS Registry No.: 7783-06-4