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| Toluene-2,4-diisocyanate | CAS 584-84-9 | ||
| CH3C6H3(NCO)2 | RTECS CZ6300000 | ||
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Synonyms & Trade Names TDI; 2,4-TDI; 2,4-Toluene diisocyanate |
DOT ID & Guide 2078 156 |
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Exposure Limits |
NIOSH REL: Ca See Appendix A | ||
| OSHA PEL�: C 0.02 ppm (0.14 mg/m3) | |||
| IDLH Ca [2.5 ppm] | Conversion 1 ppm = 7.13 mg/m3 | ||
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Physical Description Colorless to pale-yellow solid or liquid (above 71°F) with a sharp, pungent odor. |
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MW: 174.2 |
BP: 484°F |
MLT: 71°F |
Sol: Insoluble |
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VP(77°F): 0.01 mmHg |
IP: ? |
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Sp.Gr: 1.22 |
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Fl.P: 260°F |
UEL: 9.5% |
LEL: 0.9% |
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| Class IIIB Combustible Liquid: Fl.P. at or above 200�F. | |||
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Incompatibilities & Reactivities Strong oxidizers, water, acids, bases & amines (may cause foam & spatter); alcohols [Note: Reacts slowly with water to form carbon dioxide and polyureas.] |
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Measurement Methods NIOSH 2535, 5521, 5522; OSHA 18, 33, 42 |
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Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated/Daily Remove: When wet or contaminated Change: Daily Provide: Eyewash, Quick drench |
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 At concentrations above the NIOSH REL, or where there is no REL, at any detectable concentration: (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 |
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| Exposure Routes inhalation, ingestion, skin and/or eye contact | |
| Symptoms Irritation eyes, skin, nose, throat; choke, paroxysmal cough; chest pain, retrosternal (occurring behind the sternum) soreness; nausea, vomiting, abdominal pain; bronchitis, bronchospasm, pulmonary edema; dyspnea (breathing difficulty), asthma; conjunctivitis, lacrimation (discharge of tears); dermatitis, skin sensitization; [potential occupational carcinogen] | |
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Target Organs
Eyes, skin, respiratory system Cancer Site [in animals: pancreas, liver, mammary gland, circulatory system & skin tumors] |
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| See also: INTRODUCTION |