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ETHYL BENZENE <br /> Warning Concentration(ppm or mg/m'): highly variable,some sources report 2 ppm odor threshold while others <br /> report 140 and 200 ppm. Should be considered to have inadequate <br /> ( warning properties. <br /> Jia Exposure Limits/Guidelines: <br /> OSHA PEL: 100 ppm <br /> NIOSH REL: 100 ppm <br /> ACGIH TLV: 100 ppm - <br /> IDLH: 2000 ppm <br /> Photoionization Potential: 8.76 eV <br /> �.i <br /> • <br /> Page 24 of 32 <br />