4,4'-Methylenedianiline
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4,4′-Methylenedianiline (MDA) is an organic compound with the formula CH2(C6H4NH2)2. It is a colorless solid, although commercial samples can appear yellow or brown. It is produced on an industrial scale, mainly as a precursor to polyurethanes.
Quick Facts Names, Identifiers ...
Names | |
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Preferred IUPAC name
4,4′-Methylenedianiline | |
Other names
4,4′-Diaminodiphenylmethane; 4,4′-Methylenebisbenzenamine; MDA; para,para′-Diaminodiphenylmethane; Dianilinomethane; 4,4′-Diphenylmethanediamine; Bis(4-aminophenyl)methane | |
Identifiers | |
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3D model (JSmol) |
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ChEBI | |
ChEMBL | |
ChemSpider |
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ECHA InfoCard | 100.002.705 |
EC Number |
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KEGG |
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PubChem CID |
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RTECS number |
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UNII | |
UN number | 2651 |
CompTox Dashboard (EPA) |
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Properties | |
C13H14N2 | |
Molar mass | 198.269 g·mol−1 |
Appearance | Colorless solid |
Odor | faint, amine-like[1] |
Density | 1.05 g/cm3 (100°C) |
Melting point | 89 °C (192 °F; 362 K) |
Boiling point | 398 to 399 °C (748 to 750 °F; 671 to 672 K) |
0.125 g/100 ml (20 °C) | |
Vapor pressure | 0.0000002 mmHg (20°C)[1] |
Hazards | |
Occupational safety and health (OHS/OSH): | |
Main hazards |
potential carcinogen[1] |
GHS labelling: | |
Danger | |
H317, H341, H350, H370, H373, H411[2] | |
P201, P260, P273, P280, P308+P313[2] | |
Flash point | 190 °C; 374 °F; 463 K[1] |
NIOSH (US health exposure limits): | |
PEL (Permissible) |
TWA 0.010 ppm ST 0.100 ppm[1] |
REL (Recommended) |
Ca[1] |
IDLH (Immediate danger) |
Ca [N.D.][1] |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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