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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. 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.

  3. CHEMINFO: Hydrogen sulfide - CCOHS

    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. …

  4. 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 …

  5. 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 …

  6. 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.

  7. CCOHS: Battery Charging - Industrial Lead-Acid Batteries

    Aug 28, 2025 · Why is it important to follow safety procedures when charging batteries? The use, handling and charging of batteries in the workplace can be hazardous.

  8. CCOHS: What is a LD₅₀ and LC₅₀?

    Aug 28, 2025 · What does LD 50 mean? Back to top LD stands for "Lethal Dose". LD 50 is the amount of a material, given all at once, which causes the death of 50% (one half) of a group of …

  9. CCOHS: Diesel Exhaust

    Aug 28, 2025 · What is diesel exhaust? Diesel exhaust is produced by the combustion (burning) of diesel fuel.

  10. CCOHS: Transportation of Dangerous Goods (TDG) - 9 Classes

    Feb 15, 2021 · What is the purpose of the TDG Act and Regulations? The purpose of the Transportation of Dangerous Goods (TDG) Act and Regulations is to promote public safety …