What's acetylene used for? The fabrication industry uses acetylene for many major applications. → It is the only fuel gas that can be used for welding. → It is also ideal for brazing, cutting, flame gouging, spot heating, hardening, texturing, cleaning, and thermal spraying many materials.

Oral: Ingestion of liquid products containing concentrated phenol can cause serious gastrointestinal damage and even death.

Joseph Lister introduced the concept of antiseptic surgery using phenol, then known as carbolic acid. Reports of toxicity were not far behind. [1] Phenol remained a healthcare disinfectant through much of the 20th century, but its use in healthcare settings is now uncommon.

It is stable over time, and although it may develop a slight pink colour on exposure to light or air, this doesn't affect its potency. There is therefore no rationale for giving an expiry date for liquefied phenol, and as such, liquefied phenol solutions do not have one.

Modern antiseptics such as Dettol® have been developed based on phenol but with modifications to the chemistry to reduce the adverse effects and produce a safer product. Many antiseptics are still made based on phenol derivatives as the active ingredient.