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  2. R-410A - Wikipedia

    en.wikipedia.org/wiki/R-410A

    R-410A is a refrigerant used in air conditioning and heat pump applications. It is a zeotropic but near-azeotropic mixture of difluoromethane (CH 2 F 2, called R-32) and pentafluoroethane (CHF 2 CF 3, called R-125). R-410A is sold under the trademarked names AZ-20, EcoFluor R410, Forane 410A, Genetron R410A, Puron, and Suva 410A.

  3. List of refrigerants - Wikipedia

    en.wikipedia.org/wiki/List_of_refrigerants

    Refrigerant concentration limit / immediately dangerous to life or health in parts per million (volume per volume) and grams per cubic meter Molecular mass in atomic mass units Normal boiling points for pure substances, bubble and dew points for zeotropic blends, or normal boiling point and azeotropic temperature for the azeotropic blends, at ...

  4. Freon - Wikipedia

    en.wikipedia.org/wiki/Freon

    Dichlorodifluoromethane (R-12 or CFC-12), the most commonly used Freon brand refrigerant prior to its ban in many countries in 1996 and total ban in 2010. 1,1,1,2-Tetrafluoroethane (R-134a or HFC-134a), one of the main replacements for the formerly widespread R-12. Opteon halogenated olefins now replacing Freons in many applications.

  5. List of UN numbers 1001 to 1100 - Wikipedia

    en.wikipedia.org/wiki/List_of_UN_numbers_1001_to...

    n.o.s. = not otherwise specified meaning a collective entry to which substances, mixtures, solutions or articles may be assigned if a) they are not mentioned by name in 3.2 Dangerous Goods List AND b) they exhibit chemical, physical and/or dangerous properties corresponding to the Class, classification code, packing group and the name and description of the n.o.s. entry [2]

  6. Difluoromethane - Wikipedia

    en.wikipedia.org/wiki/Difluoromethane

    Difluoromethane is a molecule used as refrigerant that has prominent heat transfer and pressure drop performance, both in condensation and vaporization. [6] It has a 100-year global warming potential (GWP) of 675 times that of carbon dioxide, and an atmospheric lifetime of nearly 5 years. [ 7 ]

  7. Researchers find higher levels of dangerous chemical than ...

    www.aol.com/news/researchers-higher-levels...

    Researchers using high-tech air monitoring equipment rolled through an industrialized stretch of southeast Louisiana in mobile labs and found levels of a carcinogen in concentrations as much as 20 ...

  8. Pentafluoroethane - Wikipedia

    en.wikipedia.org/wiki/Pentafluoroethane

    Pentafluoroethane in a near azeotropic mixture with difluoromethane is known as R-410A, a common replacement for various chlorofluorocarbons (commonly known as Freon) in new refrigerant systems. Fire suppression systems

  9. Toxic and dangerous conditions at US military bases ... - AOL

    www.aol.com/unacceptable-conditions-us-military...

    Toxic and dangerous conditions at US military bases exposed — uncooked food, mold and busted air conditioning ... September 6, 2024 at 11:34 AM. Black mold, busted air conditioning, uncooked ...