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  • CCOHS: Hydrogen Sulfide
    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
  • Hydrogen Sulfide Chemical Profiles - Canadian Centre for Occupational . . .
    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
  • CHEMINFO: Hydrogen sulfide - CCOHS
    Hydrogen sulfide (H2S) is most commonly encountered occupationally as an environmental contaminant (see Uses and Occurrences) However, it is also available commercially in grades of 99-99 99 mole% minimum H2S (liquid phase) Most H2S is made and used captively (i e at the site of production) or transported over several kilometres by pipeline
  • CCOHS: Occupational Hygiene - Occupational Exposure Limits
    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
  • CCOHS: Respirators - Respirator Selection
    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
  • Exposure Limits Occupational Hygiene - Occupational Occupational Hygiene
    Occupational Hygiene - Occupational Exposure Limits CCOHS Threshold Limit Value – Short-term exposure (TLV-STEL):
  • Converting Occupational Exposure Limits from mg m³ to ppm
    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
  • Transportation of Dangerous Goods (TDG) - Classification (Road)
    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
  • CCOHS: Sulfur Dioxide
    What is the WHMIS classification? Back to top According to the Commission des normes, de l'équité, de la santé et de la sécurité du travail (CNESST), sulfur dioxide can be classified as:
  • CCOHS: Battery Charging - Industrial Lead-Acid Batteries
    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





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