10291-28-8

Basic information

• Product Name: 2,5-bis(p-toluidino)terephthalic acid
• Synonyms: 1,4-Benzenedicarboxylic acid, 2,5-bis((4-methylphenyl)amino)-; 2,5-Bis(4-toluidino)terephthalic acid; 2,5-Bis(p-toluidino)terephthalic acid; 2,5-Di-p-toluidinoterephthalic acid; NSC 319997; Terephthalic acid, 2,5-di-p-toluidino- (8CI); 2,5-bis[(4-methylphenyl)amino]benzene-1,4-dicarboxylic acid
• CAS NO: 10291-28-8
• Molecular Formula: C₂₂H₂₀N₂O₄
• Molecular Weight: 376.4052
• EINECS: 233-651-6
• Mol File: 10291-28-8.mol
• Article Data: 6

Chemical Properties

• Boiling Point: 584.5°C at 760 mmHg
• Flash Point: 307.3°C
• Density: 1.348g/cm³
• Vapor Pressure: 1.67E-14mmHg at 25°C
• Refractive Index: 1.705
• CAS DataBase Reference: 2,5-bis(p-toluidino)terephthalic acid(CAS DataBase Reference)
• NIST Chemistry Reference: 2,5-bis(p-toluidino)terephthalic acid(10291-28-8)
• EPA Substance Registry System: 2,5-bis(p-toluidino)terephthalic acid(10291-28-8)

Safety Data

• Hazardous Substances Data: 10291-28-8(Hazardous Substances Data)

Usage

General Description

2,5-bis(p-toluidino)terephthalic acid is a chemical compound with the molecular formula C24H20N2O4. It is a derivative of terephthalic acid, and its structure contains two p-toluidine groups, which are commonly used as starting materials in the production of dyes and pigments. 2,5-bis(p-toluidino)terephthalic acid is a dark green powder with potential applications in the production of organic electronics, such as organic light-emitting diodes (OLEDs) and organic photovoltaics (OPVs), due to its strong electron-donating and accepting properties. Additionally, it has been studied for its potential use as a corrosion inhibitor and as a component in the development of high-performance materials due to its unique chemical and physical properties.

Upstream product

• 52944-79-3 3,3'-Dimethoxycarbonylpropanoic anhydride 
• 106-49-0 p-toluidine 
• 114508-42-8 2,5-di-p-toluidino-terephthalic acid dimethyl ester 
• 6289-46-9 dimethyl 2,5-dioxocyclohexane-1,4-dicarboxylate 
• 13799-90-1 2,5-dichloroterephthalic acid 
• 84-48-0 2-sulfo-anthraquinone 
• 27712-87-4 1,4-cyclohexanedione-2,5-di-carboxylic acid methyl ester 
• 62-53-3 aniline 

Downstream Products

• 980-26-7 C_.I_. Pigment Red 122 
• 1047-16-1 Quinacridone 
• 10228-01-0 5,12-dihydro-2-methylquino[2,3-b]acridine-7,14-dione 

Relevant articles and documents

Preparation method for quinacridone and derivatives of quinacridone

The invention relates to the field of synthesis of organic pigments and discloses a preparation method for quinacridone and derivatives of the quinacridone. The preparation method comprises the steps that dimethyl succinate generates sodium dimethyl succinylsuccinate (DMSS) through cyclic condensation under an effect of sodium methoxide, and then being acidized into DMSS; condensation reaction occurs between the DMSS and aniline or substituted aniline, an intermediate product generated during condensation is directly oxidized and dehydrogenated by sodium 3-nitrobenzene sulfonate to obtain an oxidative product; and finally coarse products of the quinacridone or the derivatives of the quinacridone are prepared from the oxidative product in a ring-closing mode under an effect of polyphosphoric acid, and finally finished products of the quinacridone or the derivatives of the quinacridone are obtained through pigmentation treatment.

Quinacridone nanoscale pigment particles

A nanoscale pigment particle composition includes a quinacridone pigment including at least one functional moiety, and a sterically bulky stabilizer compound including at least one functional group, wherein the functional moiety associates non-covalently with the functional group; and the presence of the associated stabilizer limits the extent of particle growth and aggregation, to afford nanoscale-sized particles.

Quinacridone pigment compositions comprising unsymmetrically substituted components

The present invention relates to a novel quinacridone pigment compositions, a process using a mixed amine synthesis for the ultimate production of the compositions and to their use as colorants for pigmenting high molecular weight organic materials.