p-Xylene
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CAS
106-42-3
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C6H4(CH3)2
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RTECS
ZE2625000
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Synonyms & Trade Names
1,4-Dimethylbenzene; para-Xylene; p-Xylol
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DOT ID & Guide
1307 / 130
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Exposure
Limits
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NIOSH REL: TWA 100 ppm (435 mg/m3) ST 150 ppm (655 mg/m3)
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OSHA PEL†: TWA 100 ppm (435 mg/m3)
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IDLH
900 ppm
See: 95476
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Conversion
1 ppm = 4.41 mg/m3
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Physical Description
Colorless liquid with an aromatic odor. [Note: A solid below 56°F.]
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MW: 106.2
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BP: 281°F
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FRZ: 56°F
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Sol: 0.02%
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VP: 9 mmHg
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IP: 8.44 eV
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Sp.Gr: 0.86
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Fl.P: 81°F
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UEL: 7.0%
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LEL: 1.1%
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Class IC Flammable Liquid: Fl.P. at or above 73°F and below 100°F.
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Incompatibilities & Reactivities
Strong oxidizers, strong acids
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Measurement Methods
NIOSH 1501, 3800; OSHA 1002
See: NMAM or OSHA Methods |
Personal Protection & Sanitation (See protection)
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: When contaminated
Remove: When wet (flammable)
Change: No recommendation
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First Aid (See procedures)
Eye: Irrigate immediately
Skin: Soap wash promptly
Breathing: Respiratory support
Swallow: Medical attention immediately
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Respirator Recommendations
NIOSH/OSHA
Up to 900 ppm:
(APF = 10) Any chemical cartridge respirator with organic vapor cartridge(s)*
(APF = 25) Any powered, air-purifying respirator with organic vapor cartridge(s)*
(APF = 10) Any supplied-air respirator*
(APF = 50) Any self-contained breathing apparatus with a full facepiece
Emergency or planned entry into unknown concentrations or IDLH conditions:
(APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode
(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus
Escape:
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister/Any appropriate escape-type, self-contained breathing apparatus
Important additional information about respirator selection
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Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
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Symptoms
Irritation eyes, skin, nose, throat; dizziness, excitement, drowsiness, incoordination, staggering gait; corneal vacuolization; anorexia, nausea, vomiting, abdominal pain; dermatitis
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Target Organs
Eyes, skin, respiratory system, central nervous system, gastrointestinal tract, blood, liver, kidneys
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See also: INTRODUCTION
See ICSC CARD: 0086 See MEDICAL TESTS: 0243
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