gas phase
Number concentration means number of molecule per unit volume, and is used in the construction molecular_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. The chemical formula for toluene is C7H8 and p-cymene is C10H14. Toluene and p-cymene are members of the isobaric groups. The IUPAC name for toluene is toluene and p-cymene is 1-methyl-4-propan-2-ylbenzene.
toluene and p-cymene number concentration
Observed Property
Observation Matrix
number concentration
Object Of Interest
ACTRIS Vocabulary
trace gas variables
variable