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Material Safety Data Sheets Collection:
<br /> Genium Publishing Corporation
<br /> ® One Gentum Plaza Sheet No.318
<br /> Schenectady,NY 12304-4690 USA Xylene(Mixed Isomers)
<br /> . P (518)377-8854 1 Issued 11/80 Revision E 9 2
<br /> Section 1. Material Identification 39
<br /> Xylene(Mixed Isomers)(CaHrd Description.The commercial product is a blend of the three isomers[ortho-(o-),meta-(m- R 1 NFPA
<br /> ),Para-(p-)l with the largest proportion berg m-xylene Xylene is obtained from coal 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
<br /> adhesives,a cleaning agent in microscope technique,as a solvent for Canada balsam microscopy,as a fuel component,in K 3
<br /> aviation gasoline,protective coatings,sterilizing catgut,hydrogen peroxide,perfumes,insect repellants,pharmaceuticals,and
<br /> the leather industry,in the production of phthalic anhydride,tsophthalic,and terephthalic acids and their dimethyl esters HMIS
<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 cleaners,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)],dimethylbenzene, PPE*
<br /> methyltoluene,NCI-055232.Violet 3,xylol t Chrome
<br /> Manufacturer:Contact your supplier or distributor Consult latest Chemical Week Buyers'Guidetrtl for a suppliers list. >rffecu
<br /> Cautions:Xylene is an eye,skin,and mucous membrane irritant and may be narcotic in high concentrations It is a dangerous fire hazard t Sec g
<br /> Section 2. Ingredients and Occupational Exposure Limits
<br /> Xylene(mixed isomers) the commercial product generally contains*-40%m-xylene,20%each of o-xylene,p-xylene,and ethylbenzene, and small
<br /> quantities of toluene Unpurtfred xylene may contain pseudocumene.
<br /> 1991 OSHA PELs 1992-93 ACGIH TLVs 1985-86 Toxicity Data*
<br /> 8-hr TWA 100 ppm(435 mg/ma) TWA 100 ppm(434 mg/m3) Human,inhalation,TCt, 200 ppm produced
<br /> 15 min STEL 150 ppm(655 mg/m3) STEL 150 ppm(651 mg/m°) olfaction effects,conjunctiva irritation,and other
<br /> 1990 IDLH Level BEI(Biological Exposure Index) Methylluppune changes involving the lungs,thorax,or respiration
<br /> 1000 ppm acids in urine at end of shift 1.5 g/g creantime Man.inhalation,LCL, 10000 ppm/6 hr,toxic
<br /> 1effects not yet reviewed
<br /> 990 DFG(Germany)MAK
<br /> 1990 NIOSH RELs Human,oral,LDS 50 mg/kg,no toxic effect noted
<br /> 3 TWA 100 ppm(440 mg/m3) Rat,oral,LD 4300 m m
<br /> TWA 100 ppm(435 mg/V Category II Substances with systemic effects so Fig+toxic effect not yet
<br /> STEL 150 ppm(655 mg/m) Half-life-t 2 hrreviewed
<br /> Peak Exposure 200 ppm,30 min,average value, Rat.inhalation,LCso 5000 ppm/4 hr;toxic effects
<br /> 4 peaks per shift not yet reviewed
<br /> •See NIOSH,RTECS OM2100000),for additional toxicity data
<br /> Section 3. Physical Data
<br /> Bo0Ing Point Range. 279 to 284'17(137 to 140'C)* Molecular Weight. 10616
<br /> Booing Point. ortho 291 'F(144'C), meta 2818'F(138 8'C), Speclric Gravity.0 864 at 20*C/4*C
<br /> para 2813'F(138 5'C) Water Solubility Practically insoluble
<br /> Freezing Point/Melting Point. oriho -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 orgamc liquids.
<br /> Vapor Pressure: 6 72 mm Hg at 70'F(21 'C) Octanol/Water Partition Coefficient:logKow=3 12-3 20
<br /> Saturated Vapor Density(Air=1 2 kg/m3): 123 kg/0,0 077 lbs/ft3 Odor Threshold- 1 ppm
<br /> Appearance and Odor:Clear,sweet-smelling liquid. Viscosity c32 6 SUS
<br /> •Materials with wider and Harrower boiling ranges are commercially available
<br /> Section 4. Fire and Explosion Data
<br /> Flash Point:63 to 77'F(17 to 25'C)CC lAutoignition Temperature:982'F(527'C)(m-) LEL: 1 1 (m-.p-),0 9(o-) I UEL.7 0(m-,p-),6 7(o-)
<br /> Extingulshing Media:For small fires,use dry chemical.carbon dioxide(CO2),water spray or regular foam For large fires,use water spray,fog or
<br /> regular foam Water may be ineffective Use water spray to cool fire-exposed containers Unusual Fire or Explosion Hazards Xylene vapors or
<br /> liquid(which floats on water)may travel to an irution source and flash back The heat of fire may cause containers to explode and/or produce
<br /> irritating or poisonous decomposition products Xylene may present a vapor explosion hazard indoors,outdoors,or in sewers Accumulated static
<br /> electricity may occur from vapor or liquid flow suffictent to cause ignition Special Fire-fighting Procedures Because fire may produce toxic
<br /> thermal decomposition products,wear a self-contained breathing apparatus(SOBA)with a full facepiece operated in pressure-demand or positive-
<br /> pressure mode Structural firefighter's protective clothing will provide limited protection If feasible and without risk,move containers 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 fires If impossible,withdraw from area and let fire burn Withdraw immediately in case of any tank discoloration or rising sound from
<br /> venting safety device Do not release runoff from fire control methods to sewers or waterways
<br /> Section 5. Reactivity Data
<br /> Stability/Polymerization:Xylene is stable at room temperature in closed containers under normal storage and handling conditions Hazardous
<br /> polymenzation cannot occur Xylene is easily chlorinated.sulforiated,or nitrated Chemical Incompatibilities:Incompatibilities include strong
<br /> acids and oxidizers and 1,3-dichloro-5,5-dimethyl-2,4-imidazohdindione(dichlorohydtantorn) Xylene attacks some forms of plastics,rubber and
<br /> coatings Conditions to Avoid.Avoid heat and ignition sources and incompatibles Hazardous Products or Decomposition-Thermal oxidative
<br /> decomposition of xylene can produce carbon dioxide,carbon monoxide,and vanous hydrocarbon products
<br /> Section 6. Health Hazard Data
<br /> Carcinogenicity The IARC A)NTP,0691 and OSHA0607 do not list xylene as a carcinogen Summary of Risks Xylene is an eye,mucous
<br /> membrane,and respiratory tract irritant.Immuon starts at 200 ppm,severe breathing difficulties which may be delayed in onset can occur at high
<br /> Concentrations It is 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 questionable Since the late 1950s,xylenes have been virtually benzene-free and blood dyscrasias have not been associated with
<br /> 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 increases in platelet counts COatintte on next page
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