"SDN:P07::CF12N108" . . . "1" . "\"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 xylene is C6H4C2H6. In chemistry, xylene is a generic term for a group of three isomers of dimethylbenzene. The IUPAC names for the isomers are 1,2-dimethylbenzene, 1,3-dimethylbenzene and 1,4-dimethylbenzene. Xylene is an aromatic hydrocarbon. There are standard names that refer to aromatic_compounds as a group, as well as those for individual species."@en . "accepted"@en . "" . . "2009-07-06 15:41:29.0" . "false" . "1" . . "atmosphere_mass_content_of_xylene"@en . . "2009-07-06 15:41:29.0" . . . "SDN:P07::CF12N108" . "SDN:P07::CF12N108" . .