CCOHS: Hydrogen Sulfide
WEBOther 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
WEBH2S, 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
CHEMINFO: Hydrogen sulfide - CCOHS
WEBWet 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 ...
CCOHS: Respirators - Respirator Selection
WEBMay 10, 2024 · mouth bit respirator (fits in the mouth and comes with a nose clip to hold nostrils closed - for escape purposes only) quarter-mask (covering the nose and mouth) half-face mask (covering the face from the nose to below the chin) full facepiece (covering the face from above the eyes to below the chin) Respirators with a full facepiece also ...
CCOHS: Occupational Hygiene - Occupational Exposure Limits
WEBMay 10, 2024 · Occupational hygiene uses the techniques of anticipation, identification, evaluation, and control to identify and evaluate exposure. The goal is to identify solutions for eliminating or reducing the hazard, and monitoring to ensure no further harm occurs. Occupational exposure limits are one tool or method used in this process.
Battery Charging - Industrial Lead-Acid Batteries - Canadian …
WEBMay 10, 2024 · The charging of lead-acid batteries (e.g., forklift or industrial truck batteries) can be hazardous. The two primary risks are from hydrogen gas formed when the battery is being charged and the sulfuric acid in the battery fluid, also known as the electrolyte. Hydrogen gas can lead to fires and explosions, and worker exposure to sulfuric acid ...
Converting Occupational Exposure Limits from mg/m³ to ppm
WEBThe gas constant can have different values if the temperature and pressure are expressed in different units from those in the above equation (e.g., R= 0.082 4 l . atm / mol . K ) For n = 1. V = RT / P. V can be substituted in the formulas for converting between mg/m 3 and ppm. Fact sheet last revised: 2022-07-14.
CCOHS: Confined Space - Introduction
WEBMay 10, 2024 · Generally speaking, a confined space is a fully or partially enclosed space that: is not primarily designed or intended for continuous human occupancy. has limited or restricted entrance or exit, or a configuration that can complicate first aid, rescue, evacuation, or other emergency response activities.
Hazard and Risk - Hierarchy of Controls - Canadian Centre for ...
WEBAug 14, 2024 · Figure 1: Hierarchy of Control. Some sources may use a variation of this hierarchy of controls. For example, the CSA Standard 1002-12 (R2022): Occupational health and safety – Hazard identification and elimination and risk assessment and control includes a layer called "systems that increase awareness of potential hazards".
First Aid for Chemical Exposures - Canadian Centre for …
WEBMay 10, 2024 · It is agreed that it is very important that water flushing start immediately following skin or eye contact with a chemical. "First Aid Guidelines" are available from the American Heart Association and the American Red Cross. They state that it "can be beneficial to rinse eyes exposed to toxic chemicals immediately and with a copious …