Hydrogen sulphide gas exposure factsheet

Hydrogen sulphide is a gas that is commonly generated within sewage holding tanks on board a vessel. It is a toxic, flammable, colourless gas that is heavier than air and smells like rotten eggs.

Breathing in high levels of hydrogen sulphide gas can cause loss of consciousness within as little as one or two breaths and loss of life within minutes.

Download the factsheet to find out more.