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4,4'-Methylenedianiline (MDA) is an industrial organic compound. It is primarily produced as a precursor in the manufacturing of polyurethanes.
precursor to polyurethanes
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
Safety Reference
Toxic
Harmful
Health Hazard
Environmental Hazard
Danger
H317May cause an allergic skin reaction
Customs Tariff Classification
The international HS code for 4,4'-Methylenedianiline (CAS 101-77-9) is 2921.59.
HS code (international, 6-digit)
2921.59
EU CN code (8-digit)
2921 59 90
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
4-[(4-aminophenyl)methyl]aniline
InChIKey
YBRVSVVVWCFQMG-UHFFFAOYSA-N
SMILES
C1=CC(=CC=C1CC2=CC=C(C=C2)N)N
Synonyms (62)
A1IHK
4,4'-DIAMINODIPHENYLMETHANE
4,4'-Diaminobiphenyl methane
4,4'-Diaminodiphenylmethan
4,4'-Dimethylenediamine
4,4'-Diphenylmethanediamine
4,4'-MDA
4,4'-Methylenebisaniline
4,4'-Methylenebisbenzenamine
4,4'-Methylenedianiline
4,4'-Methylenedianiline--d8
4,4'-Methylenedibenzenamine
4,4'-methanediyldianiline
4-(4-Aminobenzyl)aniline
4-(4-Aminobenzyl)phenylamine
Ancamine TL
Aniline, 4,4'-methylenedi-
Aniline,4'-methylenedi-
Araldite hardener 972
Avaldite HT 972
Benzenamine,4'-methylenebis-
Bis(4-aminophenyl)methane
Bis(aminophenyl)methane
Bis(p-aminophenyl)methane
Bis-p-aminofenylmethan
Curithane
Dadpm
Di(4-aminophenyl)methane
Di(para-aminophenyl)methane
Diaminodiphenylmethane
Dianiline, 4,4'-methylene-
Dianilinemethane
Dianilinomethane
Jeffamine AP-20
Methylenebis(aniline)
Methylenedianiline
Methylenedianiline (VAN)
Sumicure M
Tonox
di-(p-aminophenyl)methane
methylenebis(4-aminobenzene)
p,p'-Diaminodifenylmethan
p,p'-Diaminodiphenylmethane
p,p'-Methylenedianiline
H341
Suspected of causing genetic defects
H350May cause cancer
H370Causes damage to organs
H373May cause damage to organs through prolonged or repeated exposure
H411Toxic to aquatic life with long lasting effects
H301Toxic if swallowed
H400Very toxic to aquatic life
H302Harmful if swallowed
H311Toxic in contact with skin
H319Causes serious eye irritation
H372Causes damage to organs through prolonged or repeated exposure
H410Very toxic to aquatic life with long lasting effects
H316Causes mild skin irritation
H351Suspected of causing cancer
H361Suspected of damaging fertility or the unborn child
