Hydrogen sulfide - H2S

Here is gathered essential information on hydrogen sulfide or sulfurated hydrogen (H2S): characteristics, effects on health, detection devices & systems - hydrogen sulfide detector - and proper respiratory protective equipment against organic vapors - H2S respirator: gas mask or PAPR with B gas filter.

Hydrogen sulfide (H2S) properties

Hydrogen sulfide (H2S) – also known as sulfurated hydrogen – is naturally present on Earth. This gas is exhausted during organic and bacterial material decomposition – which explains its massive presence in sewers and wastewater treatment plants. It is widely used in the chemical industry to produce inorganic sulfurs and sulfuric acid. H2S can also be found in the steel industry to remove dirt from metals.

CAS VME (8 heures) VLE (15 minutes) LIE IP Densité / Air Filtre / ARI
200-846-2 5 ppm 10 ppm 4 % 10.49 eV 1.19 B

Hydrogen sulfide effects on health

Hydrogen sulfide (H2S) is a colorless gas with a strong rotten egg smell. This gas is very toxic by inhalation (R26) and causes cellular hypoxia. Being exposed to low concentrations affects the eyes (swelling) and the breathing system (lungs burns). It is also extremely flammable (R12), especially in contact with oxidizers featuring explosive limits between 4 and 46% volume.

Hydrogen sulfide exposure chart symptoms: why use H2S respirators and monitors

Hydrogen sulfide exposure & poisoning symptoms (H2S)

Hydrogen sulfide detector - H2S

H2S respirator - Hydrogen sulfide