Technology Type

Technology Type
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Type
Condensation of Aniline with Formaldehyde
Process
Condensation Reaction
Abbreviation
PMDA
Link
https://www.atsdr.cdc.gov/toxprofiles/tp122-c4.pdf
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#TT32

Description

4,4 ´-Methylenedianiline is produced by the Condensation of Formaldehyde with Aniline in the presence of an Acid Catalyst. The Reaction produces a Mixture of di-, tri-, and poly-Methyleneanilines. Aniline is removed from the Reaction Mixture by Distillation. The percentage of 4,4 ´-Methylenedianiline in the Mixtures manufactured varies from Producer to Producer. 4,4 ´-Methylenedianiline can be isolated from the Residual Mixture by Crystallization with a suitable Solvent. 4,4 ´-Methylenedianiline commercially available in bulk quantities contains approximately 96% 4,4 ´-Methylenedianiline, 3% other Isomeric Amines, and traces of Aniline.

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Technology Owner Entity
DOW PMDA logo Dow Inc.
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Modified by UserPic   Kokel, Nicolas 11/29/2022 6:41 PM
Added 11/15/2021 12:58 PM