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Material Safety Data Sheets Collection:Genium Publishing CorporationOne Genium Plaza Sheet No. 318Schenecmiy, NY 123044690 USA Xylene (Mired Isomers)6 P(518) 377-88S4Issued: 1 l/80 Revision: E. 9192ji.Section 1. Material Identifkation 39Xylene (Mixed Isomers) (C,$tJ Description: The commercial product is a bknd of the three isomer [onho-( mete-(m- R 1 NFPA). paw@-)] with the largest proportion being m- xylene. Xylene is obtained from coal tar, mluene by tmmalkylation, <strong>and</strong>pseutiumene. Used in the manufacture of dyes, resins, paints, varnishes, <strong>and</strong> other organics; as a general solvent <strong>for</strong>adhesivs, a cleaning agent in microscope technique; as a solvent <strong>for</strong> Canada balsam microscopy. as a fuel component; inaviation gasoline, protective coatings, sterilizing catgut hydrogen peroxide, perfumes, insect repellam& phatmaceuticals, <strong>and</strong>the leather industry; in the production of phthalic anhydride, isophthalic. <strong>and</strong> terephthalic acids <strong>and</strong> their dimethyl esterswhich am used in the manufacture of polyester Tibet <strong>and</strong> as an indirect food additive as a component of adhesives. Aroundthe home, xylene is found as vehicles in paints, paint removers. degreasing clearws. lacquers, glues <strong>and</strong> cements <strong>and</strong> assolvent/vehicles <strong>for</strong> pesticides.other Designations: CAS No. 1330-20-7 t95-474 108-38-3; 106-42-3 (6, m-. p-isomers)]. dimethylbenxene,methyltoluene. NCECSS232. Violet 3, xylol.Manufacturer: Contact your supplier or distributor. Consult latest Chemical Week BUJWS' Guide) <strong>for</strong> a suppliers listCautions: Xylene is an eye, skin. <strong>and</strong> mucous membrane irritant <strong>and</strong> may be narcotic in high concentmtions. It is a dangerous fire hazard. * Sec.;Section 2. Ingredients <strong>and</strong> Occupational Exposure LimitsPPE $t ckoaicEffects*Xylene (mixed isomers): the commercial product generally contains - 40% m-xylene; 20% each of o-xylene. p-xylene, <strong>and</strong> ethylbenzene; <strong>and</strong> smallquantities of toluene. Unptied xylene may contain pseudocumene.I991 OSHA PELS 1992-93 ACGIH TLVs 1985-86 Toxicity Data*8-hr TWA: 100 ppm (435 mglm3) TWA: 100 ppm (434 mg/m? HW inhalation, TC,: 200 ppm producedSmin STEL: 150 ppm (655 mg/m31 87~~: ISO ppm (651 mg/m ) olfaction effects, conjunctiva irritation+ <strong>and</strong> otherBE1 (Biological Exposure Index): Methylbippuric ChangeJ involving the lungs, thorax+ or respiration.1990 IDLH Leveltidsinurineatendofshiftz1Jg/gQeatinine hfau. inhalation, la&,: 10000 ppm/6 hr. toxic1000 wmeffects not yet reviewed.1990 DFG (Germany) MAKl990 NIOSH RELsTWA: 100 ppm (440 mg/m3)Human, oral, L&: SO mgkg; no toxic effect noted.TWA: 100 ppm (435 mg/m? cat&g$~ ~2s~bsmlces wllb systemic effects&zl..Dss: 4300 mg/kg; toxic effect not yet8TEL: 150 ppm (655 mg/m )Peai&mrc 200 ppm 30 min, average value.Rat inhaktiolb LC& 5000 ppml4 hr toxic effects4peakspershiimt yet reviewed.* *Wdbi b;f;yJ$; ;i;+(& :cj;-~-&&;J’F (138.8‘c);paw- 281.3 ‘F (1385 ‘C)Freezing Point/Melting Point: orfho: - 13 ‘F (-25 ‘C);----- =* = *=’ 47.4 ‘c); punx 55 to 57 -F(13 to 14 ‘C)5.72 mm Hg at 70 ‘F (21‘C)~~&I~&& Density (Air = 1.2 kglm’): 1.23 kg/m3, 0.077 lb&Appearance <strong>and</strong> Odor: Clear, sweet-smelling liquid.l Msterials with wider aad PatroWer boilillg raaga are commemislly svailsble.Section 4, Fire <strong>and</strong> ExDio!sion DataMolecular Weigbtz 106.16Speeifk Gravity: 0.864 at 20 l U4 ‘CWater Solnbility: Practically insolubleOther Sohsbiit.k~: Miscible with absolute alcohol, ether, <strong>and</strong>many other organic liquids.OetanoVW’ater Partition Coefficient: 1ogKow = 3.12-3.20Odor Tbresheldr 1 ppmViscosity: 42.6 SUSFlash Point: 63 to 77 ‘F (17 to 2; ‘C) CC \Autoignition Tempera- 982 ‘F (527 ‘C) (m-) ILEL: 1.1 (m-.p); 0.9 (e) IUEL: 7.0 (m-, p-); 6.7 (o-)Extinguishing Media: For small fires, use dry chemical. carbon dioxide (CO& water spray or regular foam. Por large fires, use water spray, fog orrem&r foam. Water may be ineffective. Use water spray to cool f-exposed containur. Unumal Fur or Explosion H-r&: Xylene vapors orlit& (which floats on water) may travel to an ignition source <strong>and</strong> flash back. The heat of fa may cause containers.to explode <strong>and</strong>/or producehritating or poisonous decomposition products. Xylene may present a vapor explosion hazard indoors, outdoom, or m sewers. Accumulated staticelectricity may occur from vapor or liquid flow sufficiento cause ignition. Qeclal Fireflgbthtg Procedures: Because fire may produce toxicthermal decomposition products. wear a self-contained breathing apparatus (SCBA) with a full faapiece operated in pressure-dem<strong>and</strong> or positivepressuremode. Structural fuefighter’s protective clothing will provide limited protection. If feasibk ad without risk, move containers from fue arcaOthenvke, cool he-exposed containers until well after fue is extinguished. Stay clear of tank ends. Use u nmanned hose holder or monitor nozzles <strong>for</strong>massive cargo fires. If impossible, withdmw from area <strong>and</strong> let fire bum. Withdraw immediately in case of any tank discoloration or rising sound fromventing safety device. Do not release runoff from fire control methods to sewers or waterways.Section 5. Reactivity DataStability/Polymerization: Xylene is stable at mom temperature in closed containets under normal storage <strong>and</strong> h<strong>and</strong>ling conditions. Hazardouspolymerization cannot occur. Xylem is easily chlorinated. sulfonated. or nihated. chemical Incempatibllities: Incompatibilities include strongacids <strong>and</strong> oxidizers <strong>and</strong> 1.3-dichloto-SJdimethyl-2.6imidarolidindione (dichlorohydrantoin). Xykne attack some <strong>for</strong>ms of plastics. mbber. ati dcoatings. Conditions to Avoid: Avoid heat <strong>and</strong> ignition sources <strong>and</strong> incompatibles. Hazardous Pruducta of Decomposition: Thermal ox&tit redecomposition of xylene can produce carbon dioxide. carbon monoxide. <strong>and</strong> various hyw products.Section 6. Health Hazard DataCarchogenicity: The IARC,“@) NTP!tss) <strong>and</strong> OSHA(‘@) do not list xylene as a carcinogen Summary of Risks: Xylene is an eye, mucousmembmne. <strong>and</strong> respimtory u-act irritant Irritation starts at 200 ppm; severe breathing difIiculties which may be delayed in onset can occur at highconcentrations. It is a central nervous system (CNS) depressant <strong>and</strong> at high concentrarions can cause coma. Xidney <strong>and</strong> liver damage can occur withxylem exposure. With prolonged or repeated cutaneous exposure, xylene produces a &fatting damatitis. Chronic toxicity is not well defined, but itis less toxic than benzene. Prior to the 1950s. benzene was often found as a contaminant of xylena <strong>and</strong> the effects attributed to xylene such as blooddyscrasias are questionable. Since the late 1950s. xylenes have been virtually benzene-fme <strong>and</strong> blood dyscrasias have not been associated withxylenes. Chronic exposure to high concentrations of xylene in animal studies have demonstrated milk reversible decrease in red <strong>and</strong> white cellcounts as well as increasesplatelet counts.conlinllc 0” nextpqCopyright 0 1992 Gcmum lbblishmg Curpanuon My -roll ut Q rrpoaPctlm vilhoul Um pubhhdr pllmdanispobibiled

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