Perfluorotributylamine (PFBTA), has been identified 7100 times more effective in trapping Sun’s heat than carbon dioxide.
Used in electronic industries and in artificial blood substitute PFBTA pose serious threat to climate if unchecked ,though current volume is only 0.18 parts per trillion by volume.
Plants use light energy to photosynthesize carbohydrate from carbon dioxide and water which generates oxygen as a waste product. During night plants breathe out some carbon dioxide. Carbon dioxide is heavier than air, about 1.67 times. Carbon dioxide turns to solid below −78.5 °C at 1 atm, and in this state it is called dry ice. At −56.6 °C and pressure above 5.1 atm carbon dioxide turns to liquid.
Phase diagram of CO2 (carbon dioxide). X axis is temperature in kelvin; Y axis is pressure in bar. Authors – Ben Finney, Mark JacobsEnglish: Small pellets of dry ice sublimating in air. The pellets are approx 0.5 – 1.0cm in diameter. Author Richard Wheeler (Zephyris) at en.wikipedia
There are various uses of carbon dioxide in food, oil, chemical industry, medical field etc. In food industry carbon dioxide is used as an acidity regulator, propellant, in carbonated beverages, wine making etc. In medical field carbon dioxide is used for respiratory therapy and pulmonary function testing.
Carbon dioxide is a non-flammable, nontoxic gas classified as Class 2.2 in transport regulations. Higher concentration of carbon dioxide in shipping containers and ship’s cargo hold lead to oxygen depleted atmosphere
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Transport regulations list carbon dioxide as below
UN 1013, CARBON DIOXIDE, Class 2.2
UN 1845, CARBON DIOXIDE, SOLID (DRY ICE), Class 2.2
UN 2187, CARBON DIOXIDE, REFRIGERATED LIQUID, Class 2.2
UN 1013 can be stowed on or under deck on a cargo ship however UN 1845 & UN 2187 is authorized for on deck stowage only.
CARBON DIOXIDE, REFRIGERATED LIQUID – Road Tank Vehicle – Photo by Shashi KalladaCARBON DIOXIDE, REFRIGERATED LIQUID – Road Tank Vehicle – Photo by Shashi Kallada
Nitrous Oxide, familiarly known as laughing gas is pulled up today by United Nations’ Environment Programme (UNEP) as an alarming gas which may double by 2050. Nitrous Oxide is identified as the third most dangerous gas for increasing greenhouse effect. Foremost is carbon dioxide and then methane. Human activities like agriculture, fossil fuel usage releases the major amount of nitrous oxide to atmosphere.
UNEP logo. (Photo credit: Wikipedia)
Nitrous oxide is the gas used in whip cream cartridges which is also called as called whippits, whippets, nossies, nangs, or chargers.
English: Noz Chargers (Photo credit: Wikipedia)
IMDG Code lists Nitrous Oxide under UN 1070, Class 2.2 with subsidiary risk 5.1. Nitrous Oxide is a strong oxidising gas.
IMDG Code Compliance Centre 