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  1. CCOHS: Hydrogen Sulfide

    Aug 28, 2025 · What are other names or identifying information for hydrogen sulfide? CAS Registry No.

  2. CHEMINFO: Hydrogen sulfide

    Inhalation: Hydrogen sulfide (H2S) is a very toxic gas at normal temperatures. It poses a very serious inhalation hazard. There is a large amount of information on human exposures. …

  3. What Personal Protective Equipment (PPE) is needed when working with hydrogen sulfide? What are other names or identifying information for hydrogen sulfide? CAS Registry No.: 7783-06-4 …

  4. CCOHS: Occupational Hygiene - Occupational Exposure Limits

    Aug 28, 2025 · What is occupational hygiene? The occupational hygiene is the branch of occupational health and safety which focuses on the prevention of the occupational diseases.

  5. CCOHS: WHMIS - Education and Training

    Aug 28, 2025 · Important Information Canada has aligned the Workplace Hazardous Materials Information System (WHMIS) with the Globally Harmonized System of Classification and …

  6. CCOHS: Respirators - Respirator Selection

    Aug 28, 2025 · When should a respirator be used? Workers should use respirators for protection from contaminants in the air if other hazard control methods are not practical or possible under …

  7. CCOHS: Welding - Fumes And Gases

    Aug 28, 2025 · What are welding fumes? Welding fumes are a complex mixture of metals metallic oxides, silicates, and fluorides.

  8. CCOHS: Respirators - Wearing a Respirator

    Jul 11, 2017 · What should you know about fitting a respirator? When fitting a new respirator, try on several brands and sizes when possible.

  9. Converting Occupational Exposure Limits from mg/m³ to ppm

    When can I convert mg/m3 to ppm? Occupational exposure limits (OELs, threshold limit values (TLVs), permissible exposure levels (PELs), etc.

  10. CCOHS: WHMIS - General

    Aug 28, 2025 · Important Information Canada has aligned the Workplace Hazardous Materials Information System (WHMIS) with the Globally Harmonized System of Classification and …