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Organic Intermediate/Raw materials

4,4′-Methylenebis(N-sec-butylaniline) CAS 5285-60-9

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Product Details

Chemical Name: 4,4′-Methylenebis(N-sec-butylaniline)

Synonyms: Dinlink4200; MDBA

Molecular Structure:

Product Typical Properties

Items Specification
Cas No 5285-60-9
Molecular Formula C21H30N2
Molecular Weight 310.48
Appearance Amber Liquid
Purity % ≥96
MDA content % ≤ 0.1
Moisture % ≤ 0.1




MDBA is a liquid secondary diamine, in which the hydrogen atom on each amino group is replaced by a secondary butyl. In a limited space, the combination of active hydrogen atoms and secondary butyl produces many unique properties. The amino group forms urea bonds that affect the hard segment, while butyl acts as an internal plasticizer. It is connected to the polymer matrix and neither leaches nor precipitates. At the same time, alkyl increases the solubility of diamine, making it almost capable of mixing with any polyol and polyamine.


Product Usage

MDBA is mainly used for hard foam, soft foam, coatings, adhesives, sealants, and elastomers.


Product Packaging



Product Storage

Please store in a dry, cool and dark place




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