ASTM Method D3798 p-Xylene Impurity Standard: 10 components: Benzene [CAS:71-43-2] 0.15% (w/w) ; Ethylbenzene [CAS:100-41-4] 0.15% (w/w) ; Isopropylbenzene [CAS:98-82-8] 0.15% (w/w) ; m-Xylene [CAS:108-38-3] 0.15% (w/w) ; n-Octane [CAS:111-65-9] 0.15% (w/w) ; n-Pentane [CAS:109-66-0] 0.15% (w/w) ; o-Xylene [CAS:95-47-6] 0.15% (w/w) ; p-Xylene [CAS:106-42-3] 98.65% (w/w) ; n-Propylbenzene [CAS:103-65-1] 0.15% (w/w) ; Toluene [CAS:108-88-3] 0.15% (w/w)