BTX Mixture 1 5 Analytes, each 10µg/mL in methanol; unit: 2x4.5mL Chiron No. Compound CAS No. 1300.6 Benzene [71-43-2] 1264.7 Toluene [108-88-3] 1267.7 o-Xylene [95-47-6] 1265.8 p-Xylene [106-42-3] 1266.8m-Xylene [108-38-3]