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| Naphthalene | CAS 91-20-3 | ||
| C10H8 | RTECS QJ0525000 | ||
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Synonyms & Trade Names Naphthalin, Tar camphor, White tar |
DOT ID & Guide 1334 133 (crude or refined) 2304 133 (molten) |
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Exposure Limits |
NIOSH REL: TWA 10 ppm (50 mg/m3) ST 15 ppm (75 mg/m3) | ||
| OSHA PEL�: TWA 10 ppm (50 mg/m3) | |||
| IDLH 250 ppm | Conversion 1 ppm = 5.24 mg/m3 | ||
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Physical Description Colorless to brown solid with an odor of mothballs. [Note: Shipped as a molten solid.] |
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MW: 128.2 |
BP: 424°F |
MLT: 176°F |
Sol: 0.003% |
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VP: 0.08 mmHg |
IP: 8.12 eV |
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Sp.Gr: 1.15 |
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Fl.P: 174°F |
UEL: 5.9% |
LEL: 0.9% |
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| Combustible Solid, but will take some effort to ignite. | |||
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Incompatibilities & Reactivities Strong oxidizers, chromic anhydride |
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Measurement Methods NIOSH 1501; OSHA 35 |
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Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated Remove: When wet or contaminated Change: Daily |
First Aid (See procedures) Eye: Irrigate immediately Skin: Molten flush immediately/solid-liquid soap wash promptly Breathing: Respiratory support Swallow: Medical attention immediately |
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Respirator Recommendations
NIOSH/OSHA Up to 100 ppm: (APF = 10) Any chemical cartridge respirator with organic vapor cartridge(s) in combination with a dust and mist filter*/(APF = 10) Any supplied-air respirator* Up to 250 ppm: (APF = 25) Any supplied-air respirator operated in a continuous-flow mode*/(APF = 50) Any chemical cartridge respirator with a full facepiece and organic vapor cartridge(s) in combination with a high-efficiency particulate filter/(APF = 25) Any powered, air-purifying respirator with organic vapor cartridge(s) in combination with a dust and mist filter*/(APF = 50) Any self-contained breathing apparatus with a full facepiece/(APF = 50) Any supplied-air respirator 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 having a high-efficiency particulate filter/Any appropriate escape-type, self-contained breathing apparatus |
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| Exposure Routes inhalation, skin absorption, ingestion, skin and/or eye contact | |
| Symptoms Irritation eyes; headache, confusion, excitement, malaise (vague feeling of discomfort); nausea, vomiting, abdominal pain; irritation bladder; profuse sweating; jaundice; hematuria (blood in the urine), renal shutdown; dermatitis, optical neuritis, corneal damage | |
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Target Organs
Eyes, skin, blood, liver, kidneys, central nervous system |
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| See also: INTRODUCTION |