2,2'-Dimethyl-[1,1'-biphenyl]-4,4'-Diamine (M-Tolidine) CAS 84-67-3

Synonyms: 2,2'-Dimethylbenzidine; 4,4'-Diamino-2,2'-dimethylbiphenyl; 2,2'-DIMETHYL-4,4'-DIAMINOBIPHENYL; 4-(4-Amino-2-methylphenyl)-3-methylbenzenamine; APB-144; 4'-amino-2,2'-dimethyl[1,1'-biphenyl]-4-ylamine

Shandong Aure Chemical Co., Ltd. is one of the leading suppliers of M-Tolidine in China and also one of the manufacturers of this product.

We can provide customized requirements in terms of product purity, packaging specifications, and other aspects.

Please contact us to obtain the latest product information.

INQUIRY

Product Details

High-Purity M-Tolidine from Aure Chemical – Your Trusted Source

2,2'-Dimethyl-[1,1'-biphenyl]-4,4'-Diamine (M-Tolidine), CAS 84-67-3, is a rigid biphenyl diamine monomer and aromatic derivative, valued for its chemical stability, structural rigidity, and reactivity in polymer synthesis and organic intermediates.

Basic Information of M-Tolidine

Product Name	2,2'-Dimethyl-[1,1'-biphenyl]-4,4'-Diamine
Abbreviation	M-Tolidine
CAS Number	84-67-3
Molecular Formula	C14H16N2
Molecular Weight	212.29 g/mol
Appearance	White to off-white solid
Purity	≥99.5%
Package	1kg/bottle, 20kg/drum, or customized
Molecular formula

Key Properties

Rigid biphenyl core with methyl substituents to increase free volume and lower dielectric constant
Suitable as monomer in low-k / low dielectric loss polymer systems
Used as building block / ligand in COFs / MOFs and organic electronic materials
Dual amine functionality enables polymer chain extension or crosslinking
Reasonable thermal stability for polymer synthesis

Key Applications of M-Tolidine

High-Performance Polymers: Serves as a building block for synthesizing low-dielectric-constant polyimides and copolyimides with reduced dipole moments, ideal for telecommunication applications requiring fast signal transport and low loss; also used in block copolymers for microphase-separated nanostructures.

Optoelectronics and Solar Cells: Reacts to form conjugated enamines as p-type semiconductors for hole transport layers in vacuum-deposited perovskite solar cells, achieving high hole mobility (2.5 × 10⁻² cm²/Vs) and efficiencies up to 18.4%.

Dyes and Pigments: Acts as an aromatic diamine intermediate for producing dyes and pigments, offering strong color yield and chemical stability.

Semiconductor Devices and Cured Films: Employed as a reagent in manufacturing cured films and semiconductor devices, leveraging its diamine functionality for material processing.

Advanced Materials: Utilized as a biphenyl ligand in covalent organic frameworks (COFs) and metal-organic frameworks (MOFs) for cross-linked networks; also applied in batteries and separation membranes.

Detailed COA / TDS / MSDS are available upon request. Please Contact Us for more information.

PREVIOUS：4,4'-Bis(4-aminophenoxy)biphenyl (BAPB) CAS 13080-85-8

NEXT：1,3-Bis(4-aminophenoxy)benzene (TPE-R) CAS 2479-46-1

INQUIRY