May 10, 2024 · Other Names: H2S, hydrogen sulphide, sour gas, sewer gas Main Uses: Manufacture of other chemicals; manufacturing processes; environmental contaminant; by-product of industrial processes. Appearance: Colourless gas. Odour: Rotten eggs. Sickening sweet odour at high concentrations. Can dull the sense of smell. Canadian TDG: UN1053

H2S, hydrogen sulphide, sour gas, sewer gas Main Uses: Manufacture of other chemicals; manufacturing processes; environmental contaminant; by-product of industrial processes. Appearance: Colourless gas. Odour: Rotten eggs. Sickening sweet odour at high concentrations. Can dull the sense of smell. Canadian TDG: UN1053

Wet or moist H2S is corrosive to copper, brass, bronze, cast iron, types 1010 and 1020 carbon steel (100% concentration at temperatures of 21-65.5 deg C (70-150 deg F), lead, Monel and 400 series stainless steels.(61,74- 76) It has been reported that wet H2S can corrode carbon steel at corrosion rates that can exceed 2.5 mm/year, depending on ...

May 10, 2024 · What are the occupational exposure limits? Back to top. In general, the occupational exposure limit (OEL) indicates the level of admissible exposure, for a length of time (usually 8 hours), to a chemical or physical hazard that is not likely to affect the health of a worker.

What are "immediately dangerous to life or health" (IDLH) considerations? Back to top. Some types of atmospheres place the worker in immediate danger because the concentrations of hazardous contaminant would impair the ability to leave the work area (self-rescue) or potentially cause irreversible health effects, serious injury, or death in a matter of minutes.

Mar 12, 2025 · What should be done when preparing to enter the confined space? Back to top. The important thing to remember is that each time a worker plans to enter any work space, the worker should determine if that work space is considered a confined space.

How do I convert mg/m 3 to ppm at different temperatures and pressures? Back to top. The number 24.45 in the equations above is the volume (litres) of a mole (gram molecular weight) of a gas or vapour when the pressure is at 1 atmosphere (760 torr or 760 mm Hg) and at 25°C.

May 10, 2024 · What is a classification? Classification is defined in Part 1 of the TDG Regulations as: “classification means, for dangerous goods, as applicable, the shipping name, the primary class, the compatibility group, the subsidiary class, the UN number, the packing group, and the infectious substance category.

May 10, 2024 · What are the risks of charging an industrial lead-acid battery? Back to top. The charging of lead-acid batteries (e.g., forklift or industrial truck batteries) can be hazardous.

Feb 18, 2025 · What does the legislation state about temperature conditions at work? In some cases, legislation provides a range of acceptable temperatures for specific circumstances.