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INDUSTRIAL HAZARDS CONTROL BULLETIN NO.. 4 .





                        TECHNICAL DATA:
                                           ♦

                            Chemical Formula:   CH3C6K;(NCO)2

                            Molecular Weight:   174. IS

                            Boiling Point:      484°F. (251eC) at 769 mm; 248^.(120*0 at mm

                            Freezing Point:     67.1 -70.7°F. (19.5- 21.5°Q

                        5. Specific Gravity:   (Water 1.00) 1.22 at 77°F. (25°C)

                            Vapor Pressure:     Approximately 0.01 mm at 68° F. (20*C.);
                                                15 mm at 264° F. (129°C)

                        7.  Specific Gravity
                            of Vapor            (Air 1)6.0


                         8.  Solubility:        Water • slight with decomposition
                                                Benzene • infinite
                                                Toluene • infinite
                                                Orthodichlorobenzene • infinite

                         9. The threshold limit value (TLV) for prolonged expsure to TDI is 0.02 parts per million parts of air
                            (ppm) or 0.14 milligrams per cubic meter of air.. This value can also be expressed as 0.00011
                            fl. oz. evaporated in 1000 cu« ft* of air*
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