4,4'-Methylenebis(2-methylaniline)

Also known as: 4,4'-Diamino-3,3'-dimethyldiphenylmethane, 4,4'-Methylene di-o-toluidine, 4,4'-Methylenebis(2-methylaniline), 4,4'-Methylene-di(o-toluidine), 4,4'-methanediylbis(2-methylaniline), 4-[(4-amino-3-methylphenyl)methyl]-2-methylaniline, Benzenamine, 4,4'-methylenebis[2-methyl-, bis(4-amino-3-methylphenyl)methane, MFCD00126963, EINECS 212-658-8

4,4'-Methylenebis(2-methylaniline) (CAS 838-88-0) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C15H18N2 and a molecular weight of 226.317 g/mol. Key properties include a melting point of 155-157 °C, a boiling point of 406.6±40.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 238.9±26.8 °C. It is classified under GHS with signal word Danger and hazard statements H302 — Harmful if swallowed, H317 — May cause an allergic skin reaction and H350 — May cause cancer. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 838-88-0
Jingsj CID: J-28766-1
Molecular Formula: C₁₅H₁₈N₂
Molecular Weight: 226.317 g/mol
Category: Aromatic Hydrocarbons
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	155-157 °C
Boiling Point	406.6±40.0 °C at 760 mmHg
Density	1.1±0.1 g/cm3
Flash Point	238.9±26.8 °C
Exact Mass	226.147003
PSA	52.04000
LogP	2.56
Vapor Pressure	0.0±0.9 mmHg at 25°C
Refractive Index	1.634

GHS Safety & Compliance

Irritant / Health Hazard / Environmental HazardSignal word: Danger

H302 — Harmful if swallowed
H317 — May cause an allergic skin reaction
H350 — May cause cancer
H410 — Very toxic to aquatic life with long lasting effects

Customs & Trade Information

HS Code	2921590090
Summary	2921590090. other aromatic polyamines and their derivatives; salts thereof. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 4,4'-Methylenebis(2-methylaniline)?

The CAS number of 4,4'-Methylenebis(2-methylaniline) is 838-88-0.

What are the molecular formula and molecular weight of 4,4'-Methylenebis(2-methylaniline)?

4,4'-Methylenebis(2-methylaniline) has molecular formula C15H18N2 and molecular weight 226.317 g/mol.

Is 4,4'-Methylenebis(2-methylaniline) hazardous?

4,4'-Methylenebis(2-methylaniline) has GHS signal word Danger and hazard statements H302 — Harmful if swallowed; H317 — May cause an allergic skin reaction; H350 — May cause cancer.

What are the upstream and downstream products of 4,4'-Methylenebis(2-methylaniline)?

For 4,4'-Methylenebis(2-methylaniline), Upstream Products: Formaldehyde, o-Toluidine, o-Toluidine hydrochloride; Downstream Products: 4,4'-Diisocyanato-3,3'-dimethyldiphenylmethane, 4,4'-Methylenebis(2-methylcyclohexylamine) (mixture of isomers), 4,4'-Methylenebis(2-methylphenol).

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "4,4'-Methylenebis(2-methylaniline) (CAS 838-88-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-28766-1 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.