What is hydrogen sulphide (H2S)?
Hydrogen sulfide (H2S) is a highly toxic and flammable gas. Being heavier than air, it tends to accumulate at the bottom of poorly ventilated spaces. Although very pungent at first, it quickly deadens the sense of smell, so potential victims may be unaware of its presence until it is too late. What is carbon dioxide (CO2)? Carbon dioxide (CO2) is a colorless gas consisting of one carbon and two oxygen atoms. CO2 exists in gas state above -78.5°C and in solid state (dry ice) below -78.5°C. CO2 changes from solid to gas by sublimation. Photo: Purification Plant of Puguang Gas Field About Germanischer Lloyd Germanischer Lloyd (GL) is a ship classification society and an international technical assurance and consulting company for the energy sector. The company employs more than 6,100 engineers, surveyors, experts and administrative staff in 80 countries. The global network consists of more than 200 locations around the globe. GL is dedicated to ensuring the safety of life and property at