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Compound CAS No Concentrationbenzene 苯 71-43-2 5000 +/- 250 mg/Ltoluene?甲苯?108-88-3 5000 +/- 250 mg/Lethylbenzene 乙苯?100-41-4 5000 +/- 250 mg/Lo-xylene 鄰二甲苯 95-47-6 5000 +/- 250 mg/Lm-xylene 對二甲苯 108-38-3 5000 +/- 250 mg/Lp-xylene 間二甲苯 106-42-3 5000 +/- 250 mg/L