## Concept information

### PREFERRED TERM

p-xylene number concentration

### DEFINITION

- 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 p-xylene is C8H10. P-xylene is a member of the group of hydrocarbons known as aromatics. The IUPAC name for p-xylene is 1,4-xylene.

### BROADER CONCEPT

### OBSERVATION MATRIX

### OBJECT OF INTEREST

### OBSERVED PROPERTY

### URI

https://vocabulary.actris.nilu.no/actris_vocab/p-xylenenumberconcentration

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