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US. NIOSH: Pocket Guide to Chemical Hazards <br />ValueTypeComponents <br />610 ppm <br />TWA 350 mg/m3 <br />120 ppm <br />STEL 560 mg/m3Toluene (CAS 108-88-3) <br />150 ppm <br />TWA 375 mg/m3 <br />100 ppm <br />STEL 655 mg/m3Xylene (o, m, p isomers) <br />(CAS 1330-20-7) <br />150 ppm <br />TWA 435 mg/m3 <br />100 ppm <br />Biological limit values <br />ACGIH Biological Exposure Indices <br />Value Sampling TimeDeterminant SpecimenComponents <br />25 µg/g S-Phenylmerca <br />pturic acid <br />Creatinine <br />in urine <br />*Benzene (CAS 71-43-2) <br />0.7 g/g Sum of <br />mandelic acid <br />and <br />phenylglyoxylic <br />acid <br />Creatinine <br />in urine <br />*Ethylbenzene (CAS <br />100-41-4) <br />0.4 mg/l 2,5-Hexanedi - <br />on, without <br />hydrolysis <br />*n-Hexane (CAS 110-54-3) <br />0.4 mg/l 2,5-Hexanedio <br />n,without <br />hydrolysis <br />Urine * <br />0.3 mg/g o-Cresol, with <br />hydrolysis <br />Creatinine <br />in urine <br />*Toluene (CAS 108-88-3) <br />0.03 mg/l Toluene Urine * <br />0.02 mg/l Toluene Blood * <br />1.5 g/g Methylhippuric <br />acids <br />Creatinine <br />in urine <br />*Xylene (o, m, p isomers) <br />(CAS 1330-20-7) <br />* - For sampling details, please see the source document. <br />Exposure guidelines <br />US - California OELs: Skin designation <br />Benzene (CAS 71-43-2) Can be absorbed through the skin. <br />Cumene (CAS 98-82-8) Can be absorbed through the skin. <br />n-Hexane (CAS 110-54-3) Can be absorbed through the skin. <br />Toluene (CAS 108-88-3) Can be absorbed through the skin. <br />US - Minnesota Haz Subs: Skin designation applies <br />Cumene (CAS 98-82-8) Skin designation applies. <br />Toluene (CAS 108-88-3) Skin designation applies. <br />US - Tennesse OELs: Skin designation <br />Cumene (CAS 98-82-8) Can be absorbed through the skin. <br />US ACGIH Threshold Limit Values: Skin designation <br />Benzene (CAS 71-43-2) Can be absorbed through the skin. <br />n-Hexane (CAS 110-54-3) Can be absorbed through the skin. <br />US. NIOSH: Pocket Guide to Chemical Hazards <br />Cumene (CAS 98-82-8) Can be absorbed through the skin. <br />US. OSHA Table Z-1 Limits for Air Contaminants (29 CFR 1910.1000) <br />Cumene (CAS 98-82-8) Can be absorbed through the skin. <br />Appropriate engineering <br />controls <br />Provide adequate general and local exhaust ventilation. Use process enclosures, local exhaust <br />ventilation, or other engineering controls to control airborne levels below recommended exposure <br />limits. Use explosion-proof equipment. <br />UNLEADED GASOLINE <br />Prepared by 3E Company <br />913457 Version #: 03 Revison date: 23-May-2014 Print date: 23-May-2014 6 / 15