PAC Database - Detailed Chemical Data

Chemical Identity
Chemical CAS# UN# Health Code Numbers
Methylene diphenyl diisocyanate; (Diphenylmethane diisocyanate; MDI) 101-68-8 2489
15.01
4.01
11.01
4.08
7.01
11.00
4.02
4.07
10.00
9.00
Formula Synonyms
C15H10N2O2 DIPHENYLMETHANE-4,4^-DIISOCYANATE, 1,1'-METHYLENEBIS[4-ISOCYANATOBENZENE], 1,1-METHYLENEBIS(4-ISOCYANATOBENZENE), 4,4'-BIS(ISOCYANATOPHENYL)METHANE, 4,4'-DIISOCYANATODIPHENYLMETHANE, 4,4'-DIPHENYLMETHANE DIISOCYANATE, 4,4'-MDI, 4,4'-METHYLENEBIS(ISOCYANATOBENZENE), 4,4'-METHYLENEBIS(PHENYL ISOCYANATE), 4,4'-METHYLENEDI(PHENYL ISOCYANATE), 4,4'-METHYLENEDI-P-PHENYLENE DIISOCYANATE, 4,4'-METHYLENEDIPHENYL DIISOCYANATE, 4,4'-METHYLENEDIPHENYLDIISOCYANATE, 4,4'-METHYLENEDIPHENYLENE ISOCYANATE, 4,4'DIISOCYANATODIPHENYLMETHANE, 4,4-DIISOCIANATO DE DIFENILMETANO (DOT SPANISH), BENZENE, 1,1'-METHYLENEBIS(4-ISOCYANATO)- (9CI), BIS(1,4-ISOCYANATOPHENYL)METHANE, BIS(4-ISOCYANATOPHENYL)METHANE, BIS(P-ISOCYANATOPHENYL)METHANE, CARADATE 30, CARWINATE 125 M, DESMODUR 44, DI(4-ISOCYANATOPHENYL)METHANE, DIISOCYANATE DE DIPHÉNYLMÉTHANE-4,4' (DOT FRENCH), DIPHENYLMETHANE 4,4'-DIISOCYANATE, DIPHENYLMETHANE DIISOCYANATE, DIPHENYLMETHYLENE DIISOCYANATE, HYLENE M50, ISOCYANIC ACID, DIPHENYLMETHYLENE ESTER, ISOCYANIC ACID, METHYLENEDI-P-PHENYLENE ESTER, ISONATE 125M, ISONATE 125MF, MDI, METHYLENE BIS(4-PHENYL ISOCYANATE), METHYLENE DI-P-PHENYLENE ESTER OF ISOCYANIC ACID, METHYLENEBIS(4-ISOCYANATOBENZENE), METHYLENEBIS(4-PHENYL ISOCYANATE), METHYLENEBIS(4-PHENYLENE ISOCYANATE), METHYLENEBIS(P-PHENYL ISOCYANATE), METHYLENEBIS(P-PHENYLENE ISOCYANATE), METHYLENEBIS(PHENYLISOCYANATE), METHYLENEBIS-P-PHENYLENE DIISOCYANATE, METHYLENEBISPHENYLENE DIISOCYANATE, METHYLENEDI-P-PHENYLENE DIISOCYANATE, METHYLENEDI-P-PHENYLENE ISOCYANATE, MULTRATHANE M, NACCONATE 300, NCI-C50668, NOCCONATE 300, P,P'-DIPHENYLMETHANE DIISOCYANATE, P,P'-METHYLENEBIS(PHENYL ISOCYANATE), VILRATHANE 4300
Physical Properties
Mol Wt State MP (°C) BP (°C) VP (Hg) VP (°C) SG LEL (ppm)
250.25 S 37 25 1.197 @ 70°C
PAC Values
PAC Values (Original Units: mg/m3)
PAC-1 PAC-2 PAC-3
0.45 5ₑ 55ₑ
Converted PAC Values (ppm)
PAC-1 PAC-2 PAC-3
0.044 0.49 5.4
Technical Basis
No technical basis available
References
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PAC values marked with a subscript "A" correspond to 60-minute AEGL values.
PAC values marked with a subscript "E" correspond to ERPG values.
PAC values marked by * are >= 10% lower explosive limit (LEL) but < 50% LEL.
PAC values marked by ** are > 50% LEL but < 100% LEL.
PAC values marked by *** are >= LEL.