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  2. Chlorine gas poisoning - Wikipedia

    en.wikipedia.org/wiki/Chlorine_gas_poisoning

    Chlorine gas poisoning is an illness resulting from the effects of exposure to chlorine beyond the threshold limit value. Acute chlorine gas poisoning primarily affects the respiratory system , causing difficulty breathing, cough, irritation of the eyes, nose, and throat, and sometimes skin irritation .

  3. List of highly toxic gases - Wikipedia

    en.wikipedia.org/wiki/List_of_highly_toxic_gases

    Highly Toxic: a gas that has a LC 50 in air of 200 ppm or less. [2] NFPA 704: Materials that, under emergency conditions, can cause serious or permanent injury are given a Health Hazard rating of 3. Their acute inhalation toxicity corresponds to those vapors or gases having LC 50 values greater than 1,000 ppm but less than or equal to 3,000 ppm ...

  4. Chlorine - Wikipedia

    en.wikipedia.org/wiki/Chlorine

    Chlorine is a toxic gas that attacks the respiratory system, eyes, and skin. [126] ... When used at specified levels for water disinfection, the reaction of chlorine ...

  5. 'Unidentified product' found in US tap water could be toxic ...

    www.aol.com/unidentified-product-found-us-tap...

    Levels of the byproduct were as high as 120 micrograms per liter of water, the study found, above the regulatory limits for many disinfection byproducts, which tend to be around 60 to 80 ...

  6. Which drinking water is healthiest? The pros and cons of tap ...

    www.aol.com/lifestyle/drinking-water-healthiest...

    Filtering your water is an “extra level of assurance” that your water is safe, Kauffman says. But the type of filter you choose matters, John Rumpler , clean water director and senior attorney ...

  7. Halogen - Wikipedia

    en.wikipedia.org/wiki/Halogen

    People with levels between normal levels and those required for skeletal fluorosis tend to have symptoms similar to arthritis. [7] Chlorine gas is highly toxic. Breathing in chlorine at a concentration of 3 parts per million can rapidly cause a toxic reaction. Breathing in chlorine at a concentration of 50 parts per million is highly dangerous.

  8. Acute Exposure Guideline Levels - Wikipedia

    en.wikipedia.org/.../Acute_Exposure_Guideline_Levels

    Each AEGL is determined by different levels of a compound's toxicological effects, based on the 4 Ds: detection, discomfort, disability and death. There are three levels of AEGL-values: AEGL-1, AEGL-2 and AEGL-3. [2] AEGL-1 is the airborne concentration above which notable discomfort or irritation could be experienced. However, the effects are ...

  9. Median lethal dose - Wikipedia

    en.wikipedia.org/wiki/Median_lethal_dose

    The fixed-dose procedure, proposed in 1984, estimates a level of toxicity by feeding at defined doses and looking for signs of toxicity (without requiring death). [108] The up-and-down procedure , proposed in 1985, yields an LD 50 value while dosing only one animal at a time.