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' 1 Matenaeiy Data Sheets Col«c«o.t
<br /> Geniumeblishing Corporation Of
<br /> One Gentum Plaza Sheet No 318
<br /> Schenectady,NY 12304-4690 USA Xylene(Mixed Isomers)
<br /> (518)377-8854 issued 11 80 Revision E 9 2
<br /> Section 1, Material Identification 39
<br />' \)lene(Mixed Isomers)(C.Hrd Description The commercial product is a blend of the three isomers [ortho-(o-) meta-(m- R 1 \FPA
<br /> ) para-(p-))with the largest proportion being m-xylene Xylene is obtained from coal tar toluene by transalkylanon,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 /> a,iauon gasoline protective coatings,sterilizing catgut,hydrogen peroxide perfumes,insect repellant,,,pharmaceuticals,and
<br />' the leather industry, in the production of phthahc anhydride,isophthahc and terephthatic acids and their dimethyl esters HAUS
<br /> which are used in the manufacture of polyester fibers,and as an indirect food additive as a component of adhesives Around H 2 t
<br /> the home,xylene is found as vehicles in paints paint removers,degreasing cleaners,lacquers,glues and cements acid as F 3
<br /> solvent/vehicles for pesticides R 0
<br />' Other Designatlorts CAS No 1330-20-7[95-47-6, 108-38-3, 106-42-3 (o-,m-,p-isomers)],dimethylbenzene, PPE t
<br /> methyltoluene,NCI-C55232,Violet 3,xylol t Chronic
<br /> Manufacturer Contact your supplier or distributor Consult latest Chemical Week Buyers Gwde(�3)for a suppliers list. Effccis
<br /> Cautions Xylene is an eye,skin,and mucous membrane irritant and may be narcotic in high concentrations It is a dangerous fere hazard #Ste 8
<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 Unpurified xylene may contain pseudocumene.
<br />' 1991 OSHA PELs 1992-93 ACGIH TLVs 1985-86 Toxlclty Data*
<br /> 8 hr TWA 100 ppm(435 mg/m3) TWA 100 ppm(434 mg/m' Human inhalation,TCU 200 ppm produced
<br /> 15 min STEL 150 ppm (655 mg/ml) STEL 150 ppm(651 mg/m) olfaction effects,conjunctiva irritation.and other
<br /> 1990 IDLH Level BET(Biological Exposure Index) Methylhippunc changes involving the lungs,thorax,or respiration
<br />' 1000 ppm acids m untie at end of shift. 15 g/g creatirune Man mhalauon,LCA 10000 ppm/6 hr,toxic
<br /> 1990 DFG(Germany)MAK effects not yet reviewed
<br /> 1990 NIOSH RELs 3 TWA 100 ppm(440 mg/ml) Human,oral,LDL. SO mg/kg,no toxic effect noted
<br /> TWA 100 ppm(435 Mg/M3 Category II Substances with systemic effects Rat,oral,LD50 4300 mg/kg,toxic effect not yet
<br />' STEL 150 ppm(655 mg/m ) Half-life <2 hr reviewed N
<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 RTSCS(XE21000X) for addmonal toxicity data
<br /> Section 3. Physical Data
<br /> Boiling Point Range 279 to 284 F(137 to 140 C)* Molecular Weight 106 16
<br /> Boiling Point orrho 291 F(144'C), meta 2818'F(138 8'C), Specific Gravit) 0 864 at 20'C/4'C
<br />' para 2813 'F(138 5'C) Water Solubility Practically insoluble +
<br /> Freezing Point/Melting 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) OctanollWater Partition Coefflcienl logKow=3 12-3 20 =
<br /> Saturated Vapor Density(Air = 1 2 kglma) 1 23 kg/m3,0 077 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 available.
<br /> Section 4. Fire and Explosion Data
<br />' Flash Point 63 to 77 'F(17 to 25 'C)CC Autoignition Temperature 982 F(527 C)(m-)ILEL I 1 (m p-),0 9(o-) I UEL 7 0(m-,p-),6 7(o-)
<br /> Extinguishing 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 ignition 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 sufficient to cause ignition Special Fire fighting Procedures Because fire may produce toxic
<br /> thermal decomposition products wear it self-contained breathing apparatus(SCBA)with a full faceptece operated in pressure-demand or positive-
<br /> pressure mode Structural firefighter s protective clothing well 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 bum Withdraw immediately in case of any tank discoloration or rising sound from
<br /> Nenung safety device Do not release runoff from fire control methods to sewers or watcrw ays
<br /> Section S. Reactivity Data
<br />' Stability/Polymerizatlon Xylene is stable at room temperature m closed containers under normal storage and handling conditions Hazardous
<br /> polymerization cannot occur Xylene is easily chlorinated sulfonated,or nitrated Chemical Incompatibilities Incompaubdiues include strong
<br /> acids and oxidizers and 1,3-dichloro 5,5-dimethyl-2,4-i mid azol idi ndione(dichlorohydrantoin) Xylcne attacks some forms of plastics,rubber, and
<br /> coatings Conditions to Avoid Avoid heat and ignition sources and incompatibles Hazardous Products of Decomposition Thermal oxidati�e
<br />' decomposition of xylene can produce carbon dioxide carbon monoxide,and various hydrocarbon products
<br /> Section 6. Health Hazard Data
<br /> Carclnogenlcity The IARC,(16e)NTP(169)and OSHA064)do not list xylene as a carcinogen Summary of Risks Xylene is an eye mucous
<br />' membrane and respiratory tract imtant irritauon starts at 200 ppm,severe breathing difficulties which may be dcla)ed in onset can occur at high
<br /> concentrations It is a central ner,,ous s)stem(CNS)depressant and at high concentrations can cause coma Kidney and liver damage can occur with
<br /> xylcnc exposure With prolonged or repeated cutaneous exposure, xylene produces a dcfatnng dcr=uus Chronic toxicity is not well defined butit
<br /> is less toxic than benzene Prior to the 1950s,benzene was often found as a contaminant of xylene and the effects attnbuted to xylene such as blood
<br /> d)scraslas are quesuonable Since the late 1950s xylenes have been virtually benzene-flee and blood dyscrasias have not been associated with
<br /> x)Icnes Chronic exposure to high concentrations of xyicne in animal studies have demonstrated milk reversible decrease in red and white cell
<br /> counts as well as ine*ekes in platelet counts Continue on next page
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