Hydrogen sulfide is a highly flammable, explosive gas, and can cause possible life-threatening situations if not properly handled. In addition, hydrogen sulfide gas burns and produces other toxic vapors and gases, such as sulfur dioxide.

Permissible Exposure Level – 8 Hours. Possible fatigue, loss of appetite, headache, irritability, poor memory, dizziness. Intense odor. Above 30ppm odor is sweet or sickeningly sweet. Mild Irritation - eyes, throat – 1 Hour. Coughing, eye irritation, loss of smell 2-15 minute. Altered breathing, drowsiness 15-30 minutes. Throat irritation 1 hour.

Jan 11, 2024 · OSHA Construction and Maritime Industries PEL is 10 ppm (15 mg/m³), as an 8 hr TWA. See 29 CFR 1926.55 Table 1 and 29 CFR 1915.1000 Table Z-Shipyards. Health factors: See NIH-NLM PubChem. ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Hydrogen sulfide.

The revised IDLH for hydrogen sulfide is 100 ppm based on acute inhalation toxicity data in humans

Feb 7, 2021 · H 2 S or hydrogen sulfide is also known as sewer gas, sour gas, stink damp, and hydrosulfuric acid. H 2 S exposure chart serves as a basic reference for workers and employers about the dangerous level of H 2 S and to prevent H 2 S poisoning in the workplace.

Hydrogen sulfide is a chemical compound with the formula H 2 S. It is a colorless chalcogen-hydride gas, and is toxic, corrosive, and flammable, with trace amounts in ambient atmosphere having a characteristic foul odor of rotten eggs. [11]

Aug 19, 2024 · What Does H2S Exposure Limits Mean? Hydrogen sulfide (H2S) is a highly toxic gas that can kill or seriously harm human health when exposed to it, even at low concentrations like 10 parts per million (ppm).

Up to 100 ppm: (APF = 25) Any powered, air-purifying respirator with cartridge(s) providing protection against the compound of concern (APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted canister providing protection against the compound of concern

5 days ago · Low vs. High Concentrations of H2S. At low concentrations (0.01–10 ppm), H2S emits a strong odor, which can serve as an initial warning. However, prolonged exposure, even at these levels, can cause eye irritation, headaches, and dizziness. Between 10–50 ppm, symptoms become more pronounced, including nausea and respiratory discomfort.

Mar 25, 2017 · Hydrogen Sulfide (H2S) is a gas commonly found during the drilling and production of crude oil and natural gas, plus in wastewater treatment and utility facilities and sewers. The gas is produced as a result of the microbial breakdown of organic materials in the absence of oxygen.