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Hydrogen Sulphide Gas Detection

CAS Number: 7783-06-4
STEL: 10ppm
TWA: 1ppm

Properties

Hydrogen Sulphide (H2S) is a colourless, toxic, flammable gas that is known by its characteristic rotten egg like odour.

Dangers

One of the drawbacks to trusting the senses (olfactory) for protection against Hydrogen Sulphide is that prolonged exposure to the gas renders the sense of smell. H2S reacts with the enzymes in the blood stream which inhibit cell respiration. In other words, high concentrations of H2S can shut off the lungs. Low concentration exposure to the gas can burn the respiratory tract and cause swelling around the eyes.

Where is it found

Hydrogen Sulphide is generated through the hydrolysis of sulphide salts especially where bacteria break down organic matter in the absence of oxygen, e.g. in swamps, sewers, rivers, harbours, etc. It also occurs as a manmade by-product in such industrial facilities as chemical plants, paper mills, oil refineries, etc.

Hydrogen Chloride gas products

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