"1" . "SDN:P07::CF12N43" . "false" . "1" . . "SDN:P07::CF12N43" . . . "SDN:P07::CF12N43" . "atmosphere_mass_content_of_ethyne"@en . . . "2009-07-06 15:41:29.0" . "accepted"@en . . "\"Content\" indicates a quantity per unit area. The \"atmosphere content\" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_of_atmosphere_layer are used. The chemical formula for ethyne is HC2H. Ethyne is the IUPAC name for this species, which is also commonly known as acetylene."@en . "" . "2009-07-06 15:41:29.0" . . .