Naphthalene diisocyanate
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CAS
3173-72-6
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C10H6(NCO)2
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RTECS
NQ9600000
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Synonyms & Trade Names
1,5-Diisocyanatonaphthalene; 1,5-Naphthalene diisocyanate; 1,5-Naphthalene ester of isocyanic acid; NDI
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DOT ID & Guide
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Exposure
Limits
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NIOSH REL: TWA 0.040 mg/m3 (0.005 ppm) C 0.170 mg/m3 (0.020 ppm) [10-minute]
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OSHA PEL: none
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IDLH
N.D.
See: IDLH INDEX
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Conversion
1 ppm = 8.60 mg/m3
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Physical Description
White to light-yellow, crystalline flakes.
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MW: 210.2
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BP: 505°F
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MLT: 261°F
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Sol: ?
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VP(75°F): 0.003 mmHg
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IP: ?
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Sp.Gr: ?
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Fl.P(oc): 311°F
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UEL: ?
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LEL: ?
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Combustible Solid
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Incompatibilities & Reactivities
None reported
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Measurement Methods
NIOSH 5525;
OSHA PV2046
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 or contaminated
Change: Daily
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First Aid (See procedures)
Eye: Irrigate immediately
Skin: Soap wash immediately
Breathing: Respiratory support
Swallow: Medical attention immediately
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Respirator Recommendations
NIOSH
Up to 0.05 ppm:
(APF = 10) Any supplied-air respirator*
Up to 0.125 ppm:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode*
Up to 0.25 ppm:
(APF = 50) Any self-contained breathing apparatus with a full facepiece
(APF = 50) Any supplied-air respirator with a full facepiece
Up to 1 ppm:
(APF = 2000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode
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, ingestion, skin and/or eye contact
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Symptoms
Irritation eyes, nose, throat; respiratory sensitization, cough, pulmonary secretions, chest pain, dyspnea (breathing difficulty); asthma
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Target Organs
Eyes, respiratory system
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See also: INTRODUCTION
See ICSC CARD: 0653 |
