HCLHydrogen Chloride


STEL: 5ppm (Short Term exposure Limit - 15mins)

TWA: 1ppm (Time Weighted Average - 8hrs)


Alarm Recomendations
Rising Latching Alarms For Line Safety Applications

First Alarm: Second Alarm: Third Alarm:
1ppm 5ppm Optional

Hydrogen Chloride (HCL) Molecule

Hydrogen Chloride(HCL)

Hydrogen Chloride (HCL) is a colourless, highly toxic gas with a strong odour. HCL is also highly corrosive. HCL is readily dissolves in water to give Hydrochloric acid. In moist conditions, Hydrogen chloride gas reacts with water in the air to give clouds of Hydrochloric acid.

Hydrogen chloride is used in the manufacture of fertilisers, dyes and a number of industrial chemicals. It is used to separate cotton from wool and fluff in the textiles industry. It’s used in electronics industry, to etch semiconductor crystals. HCL is also used to treat synthetic rubber and in metal processing treatments.

At a vinyl plant in Cheshire in 2000. A storage container leaked Hydrogen Chloride into the local area,which resulted in an explosion and 18 tonnes of Hydrogen Chloride to leak into the local area. This caused an evacuation of the Vinyl Plant and local residents were unable to leave there homes for many hours because of fear of exposure to the Hydrogen Chloride Gas. Had gas detection been used, the leak could have been detected at an earlier stage, preventing the explosion, consequential disruption and potential injury or loss of life.

Inhalation of HCL at low levels over short periods of time can cause throat irritation. Exposure to higher levels may result in effects including rapid breathing, blue colouring of the skin, fluid accumulation in the lungs and in extreme cases severe swelling of the throat, suffocation and death.

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