Safety Aspects of Carbon dioxide

  Safety Aspects of Carbon dioxide


Presence of large quantity of CO2 replace oxygen which is required to support life.since it is heavier than air, it accumulated at the lower level.The maximum allowable concentration in working atmosphere for prolonged exposure is 5000 ppm.
While entering in confined spaces containing or suspected to contain high carbon dioxide concentration, oxygen – breathing apparatus should be used. Air sample analysis should be performed frequently to ensure that the presence of the gas is within the safe limit.

The atmospheric carbon dioxide concentration is 0.03 %.

Carbon dioxide, carbon dioxide in atmosphere
Carbon dioxide in atmosphere


Carbon dioxide is a colorless gas with a density about 60% higher than that of dry air. Carbon dioxide consists of a carbon atom covalently double bonded to two oxygen atoms. It occurs naturally in Earth's atmosphere as a trace gas.

Property


Chemical formula       CO2
Appearance                      Colorless gas
Molar mass                      44.009 g·mol−1
Melting point                  −56.6 °C; −69.8 °F; 216.6 K
                                            (Triple point at 5.1 atm)

 Density                            1562 kg/m3
                                       (solid at 1 atm and −78.5 °C)

                                          1101 kg/m3
                                         (liquid at saturation −37°C)

                                           1.977 kg/m3
                                           (gas at 1 atm and 0 °C)

Solubility in water            1.45 g/L at 25 °C (77 °F).

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