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2. GHS hazard pictograms - Wikipedia

   en.wikipedia.org/wiki/GHS_hazard_pictograms

   Alternative sign. Division 2.2 Toxic gases – Gases which: are known to be so toxic or corrosive to humans as to pose a hazard to health; or; are presumed to be toxic or corrosive to humans because they have an LC 50 value equal to or less than 5000 ml/m 3 (ppm). e.g. hydrogen cyanide. Division 2.3

3. Liquid nitrogen - Wikipedia

   en.wikipedia.org/wiki/Liquid_nitrogen

   If the liquid nitrogen manages to pool anywhere, it will burn severely. As liquid nitrogen evaporates it reduces the oxygen concentration in the air and can act as an asphyxiant, especially in confined spaces. Nitrogen is odorless, colorless, and tasteless and may produce asphyxia without any sensation or prior warning. [20] [21] [22]

4. Hazard symbol - Wikipedia

   en.wikipedia.org/wiki/Hazard_symbol

   The sign is commonly referred to as a radioactivity warning sign, but it is actually a warning sign of ionizing radiation. Ionizing radiation is a much broader category than radioactivity alone, as many non-radioactive sources also emit potentially dangerous levels of ionizing radiation.

5. GHS hazard statements - Wikipedia

   en.wikipedia.org/wiki/GHS_hazard_statements

   Extremely flammable liquid and vapour H225: Highly flammable liquid and vapour H226: Flammable liquid and vapour H227: Combustible liquid H228: Flammable solid H229: Pressurized container: may burst if heated H230: May react explosively even in the absence of air H231: May react explosively even in the absence of air at elevated pressure and/or ...

6. ISO 7010 - Wikipedia

   en.wikipedia.org/wiki/ISO_7010

   Graphical symbols — Safety colours and safety signs — Registered safety signs: Abbreviation: ISO 7010: Year started: October 2003 () First published: October 2003; 21 years ago () Latest version: 3 2019: Organization: International Organization for Standardization: Committee: ISO/TC 145/SC 2 Safety identification, signs, shapes, symbols and ...

7. Liquid nitrogen mishap kills 750,000 fish in rivers in Iowa ...

   www.aol.com/liquid-nitrogen-mishap-kills-750...

   Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 more ways to reach us. ... Liquid nitrogen mishap kills 750,000 fish in rivers in Iowa and Missouri, officials say.