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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
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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 See: 91203 | 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 See: NMAM or OSHA Methods |
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Personal Protection & Sanitation (See protection) 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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Important additional information about respirator selection Respirator Recommendations NIOSH/OSHA Up to 100 ppm: (APF = 10) Any air-purifying half-mask respirator with organic vapor cartridge(s) in combination with an N95, R95, or P95 filter. The following filters may also be used: N99, R99, P99, N100, R100, P100. Click here for information on selection of N, R, or P filters.* (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 air-purifying full-facepiece respirator equipped with organic vapor cartridge(s) in combination with an N100, R100, or P100 filter. Click here for information on selection of N, R, or P filters. (APF = 25) Any powered air-purifying respirator with an organic vapor cartridge in combination with a high-efficiency particulate 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 an N100, R100, or P100 filter. Click here for information on selection of N, R, or P filters./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 See ICSC CARD: 0667 See MEDICAL TESTS: 0152 |