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Material Safety Data Sheets Collection:
<br /> Genium Publishing Corporation
<br /> 18
<br /> One Gentttm Plaza Sheet No.
<br /> Schenectady,NY 12304-4690 USAG& P Xylene(Mixed Isomers)
<br /> (518)377-8854 Issued 11/80 Revision- E 9)9.2
<br /> . Section 1. Material Identification 391
<br /> Xylene(Mixed isomers)(CsHna Description:The commercial product is a blend of the three isomers[ortho-(o-),meta-(m- R 1 NFPA
<br /> ),Para-(p-)]with the largest proportion being m-xylene Xylene is obtained from oval tar,toluene by transalkylation.and I 2 3
<br /> pseudocumene Used in the manufacture of dyes,resins,paints.varnishes.and other organics,as a general solvent for S 2 2 0
<br /> adhesives,a cleaning agent in microscope technique,as a solvent for Canada balsam microscopy,as a fuel component,in K 3 _
<br /> aviauon gasoline.protective coatings,sterilizing catgut,hydrogen peroxide,perfumes,unset repellants,pharmaceuticals.and
<br /> the leather industry,in the production of phthahc anhydride,isophthalic,and terephthalic acids and their dimethyl esters HNIIS
<br /> which are used in the manufacture of polyester fibers,and as an indirect food additive as a component of adhesives Around H 2t `
<br /> the home,xylene is found as vehicles in paints,paint removers,degreasing clariom lacquers,glues and cements and as F 3
<br /> solvent/vehicles for pesticides R 0
<br /> Other Designations:CAS No 1330-20-7[95-47-6. 108-38-3,106-42-3(o-,m-,p-isomers)],dimethyibenze rie. PPE*
<br /> mehyltoluene.NCI-055232.Violet 3,xylol t Chromes
<br /> Manufacturer:Contact your supplier or distributor Consult latest Chemical Weak Bayed GieidetT3)for a suppherslist. Effects i
<br /> Cautions:Xylene is an eye.sknt,and mucous membrane irritant and may be narcotic in lugh concentrations It is.a dangerous fire hazard #Sea.8 1
<br /> Section 2. Ingredients and Occupational Exposure Limits
<br /> Xylene(mixed isomers) the commercial product generally contain—40%m-xylene,20%each of o-xylene.p-xylene:,and ethylbenzene,and small i
<br /> quanuues of toluene.Unpunfed xylene may contain pseudocumene,
<br /> 1991 OSHA PELs 1992-93 ACGIH TLVs 1985-86 Toxicity Data*
<br /> 8-hr TWA 100 ppm(435 mg/rn) TWA 100 ppm(434 mg/m3) Human,inhalation.TCL,, 200 ppm produced
<br /> I5-min STEL 150 ppm(655 mg/m3) STEL 150 ppm(651 mghti3) olfaction effects,conjunctiva irritation,and other
<br /> 1990 IDLH Level BEI(Biological Exposure Index) Methylhippunc changes involving the lungs,thorax,or respiration
<br /> 1000 ppm acids in urine at end of shift. 1.5 g/g creatinine Man.inhalation.LCL,, 10000 ppm/6 hr.toxic
<br /> 1990 DFG(Germany)MAK effects not yet reviewed.
<br /> 1990 NIOSH RELs y Human,oral,LDL,, 50 mg/kg,no toxic effect noted
<br /> TWA 100 3 "TWA 100 ppm(440 mg/m3) RaL,oral.LD 4300 mg/kg,toxic effect not et
<br /> ppm(435 mglm� �teBmY II Substances with systemic effects S0 � Y ,
<br /> STEL 150 ppm(655 mg/m ) Half-life.<2 hr reviewed #
<br /> Peak Exposure.200 ppm.30 nun,average value, Rat.inhalation,LC50 5000 ppm/4 hr,,toxic effects
<br /> 4 peaks per shift not yet reviewed
<br /> f
<br /> •See NIOSH,RTECS(XE21000M),for additional toxicty data. I
<br /> . Section 3. Physical Data
<br /> Boiling Point Range: 279 to 284'F(137 to 140'C)• Molecular Weight: 10616
<br /> Boiling Point: orMa 291 'F(144'C), meta 2819'F(138 8'C), Specific Gravity:0 864 at 20'C/4'C
<br /> para 2813'F(1385'C) Water Solubility:Practically insoluble
<br /> Freezing PolnvMdtWg Point: Ortho .13'F(-25-C), Other Solubilities:Miscible with absolute alcohol,ether,and
<br /> meta -53 3'F(-47 4'C), para.55 to 57'F(13 to 14'C) many other organic liquids.
<br /> Vapor Pressure: 6 72 mm Hg at 70'F(21'C) OctanoUWater Partition Coefficlenu IogKow=3 12-3 20
<br /> Saturated Vapor Density(Air=1.2 kg/nri): 123 kg/rri3.0 077 lbs/ft3 Odor Threshold:1 ppm
<br /> Appearance and Odor.Clear,sweet-smelling liquid. Viscosity:<32 6 SUS
<br /> •Materials with wider and narrower boiling ranges are commercially avulable.
<br /> Section 4. Fire and Explosion Data
<br /> Flash Point:63 to 77'F(17 to 25 'C)CC lAutoignition Temperature:9827(527'C)(m-)I LEL: 1 I (m-,p-),0 9(o-) 1 UEL:7 0(m-,p-),6 7(o-)
<br /> Extinguishin Media:For small fires,use dry chemical,carbon dioxide(CO2). water sprayy or regular foam For large fres,use water spray,fog or
<br /> regular foam.Water may be ineffective Use water spray to cool fira-axposed containers Unusual Fire or Explosion Hazards:Xylem vapors or
<br /> liquid(which floats on water)may travel to an ntiara source and flash back.The heat of fire may cause containers to explode and err produce
<br /> irritating or poisonous decomposition products Xylene may present a vapor explosion hazard indoors.outdoors,or in sewers Accumulated static
<br /> electneity may occur from vapor or liquid flow sufficient to cause ignition Special Fire-fighting Procedures:Because fire may produce toxic
<br /> thermal decomposition products,wear a self-contained breathing apparatus(SCBA)with a fail faceptece operated in pressure-demand or positive-
<br /> pressure mode Structural firefighter's protective clothing will provide hunted protection If feasible and without risk move contauters from fire area
<br /> Otherwise,cool fire-exposed containers until well after fire is extinguished.Stay clear of tank ends.Use unmanned hose holder or monitor nozzles for
<br /> massive cargo fres If impossible,withdraw from area and let fire burn Withdraw immediately in case of any tank discolouration or rising sound from
<br /> I
<br /> venting safety device Do riot release runoff from fire control methods to sewers or waterways
<br /> Section 5. Reactivity Data
<br /> Stability/Potymerization:Xylene is stable at room temperature inclosed eontarriena undo normal storage and liaridling conditions Hazardous
<br /> polymerization carinoc occstr.Xylene is easily chlorinated,sulfonated,or nitrated Chemkai ineompatlbBlthes:Incompatibihties include strong
<br /> acids and oxidizers and 1,3 dtchkrra S,S dimethyl-2,4-imidazolidindione(dichlorohydrantoin) Xylene attacks same forms of placttts.rubber,and
<br /> coatings Conditiout to Avoid:Avoid hese andligivtion soureets and incompatibles Hazardous Products of Decomposition.Thermal oxidative
<br /> decomposition of xylene can produce carbon dioxides,carbon monoxide.and vanons hydrocarbon products , I � I
<br /> Section'6. Health Hazard Data v
<br /> Carcinogenicity:The I4.RC,tI64l NTP,(169)and OSHAtt"f do not list xylene as a carcinogen Summary of Risks Xylene is an eye,mucous
<br /> membrane,and respiratory tract irritant.Irritation starts at 200 ppm,severe breathing difficulties which may be delayed in onset can occur at high
<br /> concentrations It ss a central nervous system'(CNS)depressant and at high concentrations can cause coma.Kidney and liver damage can occur with
<br /> xylene exposure-With prolonged or repeated cutaneous exposure,xylene produces a defatting dermatitis.Chronic toxicity is not well defined,but it
<br /> is less toxic than benzene Prior to the 1950s,benzene was often found as a contaminant of xylene and the effects attributed to xylene such as blood
<br /> dyscrasias are quesuonable.Since the late 1950s,xylenes have been virtually benzene-free and blood dyscrasias have not been associated with
<br /> 4 xylenes�Chronic exposure to high concentrations of xylene in animal studies have demonstrated milk reversible decrease in red and white cell
<br /> counts as well as itxiesseii in platelet counts I I I I I Coa!luiae we unci Doge
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<br /> , III l 3 I 'II I SII V I I I I I [ I 'I I I 1 1 itI 11 I I�+I
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