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9/27/2020 <br />Centers for Disease <br />Control and Prevention <br />CDC -NIOSH Pockel Guide to Chemical Hazards - m -Xylene <br />The National Institute for Occupational Safety and Health <br />(NIOSH) <br />Promoting productive workplaces ° <br />through safety and health research <br />Synonyms &Trade Names <br />1,3 -Dimethylbenzene, meta -Xylene, m -Xylol <br />CAS No. RTECS No. DOT ID &Guide <br />108-38-3 ZE2275000 1307 130 <br />Formula Conversion IDLH <br />C6H4(CH3)2 1 ppm = 4.34 mg/m3 900 ppm <br />See: 95476 <br />Exposure Limits Measurement Methods <br />NIOSH REL NIOSH 1501 , 3800; <br />TWA 100 ppm (435 mg/m3) ST 150 ppm (655 mg/m3) OSHA 1002 <br />OSHA PEL See: NMAM or OSHA Methods <br />TWA 100 ppm (435 mg/m3) See Appendix G <br />Physical Description <br />Colorless liquid with an aromatic odor. <br />Molecular Boiling Point Freezing Point Solubility Vapor Ionization <br />Weight Pressure Potential <br />282°F -54°F Slight <br />106.2 9 mmHg 8.56 eV <br />Specific Flash Point Upper Lower <br />Gravity Explosive Limit Explosive Limit <br />0.86 7.0% 1.1 <br />Class IC Flammable Liquid: FLP. at or above 73°F and below 100°F. <br />Incompatibilities &Reactivities <br />Strong oxidizers, strong acids <br />hops:/Nnwi.cdc.gov/niosh/npg/npgd0669.himl 1M <br />