10109-95-2

Basic information

• Product Name: 2,5-DIANILINOTEREPHTHALIC ACID
• Synonyms: 2,5-bis(phenylamino)-4-benzenedicarboxylicacid;4-Benzenedicarboxylicacid,2,5bis(phenylamino)-1;2,5-DIANILINOTEREPHTHALIC ACID;2,5-Dianilinoterephthalsure;1,4-Benzenedicarboxylic acid, 2,5-bis(phenylamino)-;Einecs 233-302-8
• CAS NO: 10109-95-2
• Molecular Formula: C₂₀H₁₆N₂O₄
• Molecular Weight: 348.35
• EINECS: 233-302-8
• Mol File: 10109-95-2.mol
• Article Data: 8

Chemical Properties

• Melting Point: 308-312 °C (decomp)
• Boiling Point: 559.8°Cat760mmHg
• Flash Point: 292.3°C
• Appearance: /
• Density: 1.412g/cm³
• Vapor Pressure: 2.29E-13mmHg at 25°C
• Refractive Index: 1.734
• PKA: 2.79±0.36(Predicted)
• CAS DataBase Reference: 2,5-DIANILINOTEREPHTHALIC ACID(CAS DataBase Reference)
• NIST Chemistry Reference: 2,5-DIANILINOTEREPHTHALIC ACID(10109-95-2)
• EPA Substance Registry System: 2,5-DIANILINOTEREPHTHALIC ACID(10109-95-2)

Safety Data

• Hazardous Substances Data: 10109-95-2(Hazardous Substances Data)

Usage

General Description

2,5-Dianilinoterephthalic acid is a type of chemical compound often used as a monomer in the production of polyimides, a class of plastic or resin noted for their high heat-resistance. The chemical formula for this compound is C20H16N2O4 and its molecular weight is 344.35 g/mol. In terms of its physical properties, 2,5-Dianilinoterephthalic acid typically appears as a yellow crystalline powder. It's known to have a higher melting point and is considered toxic if swallowed or inhaled, causing irritation to the skin, eyes, and respiratory tract. It's important that it's handled with care during use and stored properly to maintain its stability and prevent hazards.

InChI:InChI=1/C20H16N2O4/c23-19(24)15-12-18(22-14-9-5-2-6-10-14)16(20(25)26)11-17(15)21-13-7-3-1-4-8-13/h1-12,21-22H,(H,23,24)(H,25,26)

Upstream product

• 14297-59-7 diethyl NN'-diphenyl-2,5-diaminoterephthalate 
• 14297-60-0 2,5-dianilinoterephthalic acid dimethyl ester 
• 6289-46-9 dimethyl 2,5-dioxocyclohexane-1,4-dicarboxylate 
• 62-53-3 aniline 
• 27712-87-4 1,4-cyclohexanedione-2,5-di-carboxylic acid methyl ester 
• 106-49-0 p-toluidine 
• 15926-96-2 2.5-Bis--terephthalsaeure-dimethylester 
• 5870-37-1 2,5-Dihydroxybenzol-1,4-dicarbonsaeure-dimethylester 
• 52944-79-3 3,3'-Dimethoxycarbonylpropanoic anhydride 
• 860754-76-3 2,5-bis-(N-nitroso-anilino)-terephthalic acid 
• 64-19-7 acetic acid 
• 15926-97-3 2,5-Bis--terephthalsaeure-dimethylester 

Downstream Products

• 1047-16-1 Quinacridone 
• 860754-76-3 2,5-bis-(N-nitroso-anilino)-terephthalic acid 
• 101904-51-2 2-(phenyl)amino-3-carboxy-9(10H)acridinone 
• 1352211-63-2 C₂₈H₃₀N₄O₆ 
• 1352211-66-5 C₃₂H₃₄N₄O₆ 
• 1352211-62-1 C₂₈H₃₀N₄O₆ 
• 1352211-67-6 C₃₂H₃₂N₄O₆ 
• 980-26-7 C_.I_. Pigment Red 122 
• 10228-01-0 5,12-dihydro-2-methylquino[2,3-b]acridine-7,14-dione 

Relevant articles and documents

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Method for preparing 2,5-di(substituted) arylamino terephthalic acid

The invention relates to a method for preparing 2,5-di(substituted) arylamino terephthalic acid by oxidizing 2,5-di(substituted) arylamino-3,6-dihydro-terephthalic acid ester. Hydrogen peroxide is adopted as an oxidizing agent in the method; the hydrogen peroxide is capable of completely oxidizing matter to be oxidized (the reactant conversion rate is high), and has better selectivity (the purity and the yield of a target object are both higher); furthermore, the hydrogen peroxide is converted into water after being oxidized, and a reaction system has no byproducts formed by over oxidation. Therefore, the method for preparing the 2,5-di(substituted) arylamino terephthalic acid, provided by the invention, is economic, friendly to environment and easy to control in reaction.

2,5-DI(METHOXYANILINO)TEREPHTHALIC ACID POLYMORPHS AND QUINACRIDONES REALIZED THEREFROM

2,5-di(p-methoxyanilino)terephthalic acid crystal types I and Il are made by controlling the pH during the recovery of the oxidized product of the condensation of dimethylsuccinyl succinate with p-methoxyaniline. The resulting 2,5-di(p- methoxyanilino)-terephthalic acid can be converted into 2,9-dimethoxyquinacridone or a solid solution thereof having controlled characteristics.