1962-74-9

Basic information

• Product Name: Terephthalic acid dipropyl ester
• Synonyms: 1,4-Benzenedicarboxylic acid dipropyl ester;Terephthalic acid dipropyl ester
• CAS NO: 1962-74-9
• Molecular Formula: C₁₄H₁₈O₄
• Molecular Weight: 250.2903
• Mol File: 1962-74-9.mol

Chemical Properties

• Boiling Point: 321.4°Cat760mmHg
• Flash Point: 168.6°C
• Appearance: /
• Density: 1.082g/cm³
• Vapor Pressure: 0.000298mmHg at 25°C
• Refractive Index: 1.502
• CAS DataBase Reference: Terephthalic acid dipropyl ester(CAS DataBase Reference)
• NIST Chemistry Reference: Terephthalic acid dipropyl ester(1962-74-9)
• EPA Substance Registry System: Terephthalic acid dipropyl ester(1962-74-9)

Safety Data

• Hazardous Substances Data: 1962-74-9(Hazardous Substances Data)

Usage

InChI:InChI=1/C14H18O4/c1-3-9-17-13(15)11-5-7-12(8-6-11)14(16)18-10-4-2/h5-8H,3-4,9-10H2,1-2H3

Upstream product

• 71-23-8 propan-1-ol 
• 120-61-6 1,4-benzenedicarboxylic acid dimethyl ester 
• 100-21-0 terephthalic acid 
• 68-36-0 1,4-bis(trichloromethyl)benzene 
• 100-20-9 terephthaloyl chloride 
• 67-63-0 isopropyl alcohol 
• 636-09-9 diethyl terephthalate 
• 107-08-4 1-iodo-propane 
• 201230-82-2 carbon monoxide 
• 99-91-2 para-chloroacetophenone 

Downstream Products

• 1818-05-9 terephthalic acid monopropyl ester 

Relevant articles and documents

Preparation method of terephthalic acid and diester thereof

The invention discloses a preparation method of terephthalic acid and diester thereof. Specifically, under the action of a supported metal catalyst, 2-cyclohexene-1,4-dicarboxylic acid undergoes catalytic dehydro-aromatization in a polar solvent or a nonpolar solvent so as to prepare terephthalic acid and diester. The polar solvent is water, methanol, ethanol, n-propanol, isopropanol, n-butanol, glycol dimethyl ether and diglyme. The nonpolar solvent is one or more than two components selected from a group consisting of n-hexane, n-heptane, normal octane, cyclohexane, benzene and toluene. A metal active component of the supported metal catalyst is non-noble metal and/or noble metal. A carrier for the supported metal catalyst is one or more than two components selected from a group consisting of a carbon carrier, nanoscale metal oxide, nanometer nonmetal oxide and a molecular sieve. When conversion rate of 2-cyclohexene-1,4-dicarboxylic acid is 95% and above, selectivity of terephthalic acid or diester of terephthalic acid can reach 90%.

Primary coloured electrochromism of aromatic oxygen and sulfur diesters

Eleven aromatic diesters and thioic S,S′-diesters were synthesized and investigated using electrochemical (cyclic voltammetry and controlled potential electrolysis) and UV-vis spectroscopic techniques over a range of temperatures. Nine of the compounds exhibited vibrant colour changes from a colourless state in their neutral forms to brightly coloured upon one-electron electrochemical reduction in acetonitrile. The compounds were found to display either red, green or blue colours in their one-electron reduced states. The electrochromic properties of 3 of the compounds that displayed the most vibrant colour changes were examined in solution using a gold micro-mesh electrode laminated inside a polymer film.

Preparation of monoalkyl terephthalates: An overview

Terephthalic acid can be readily converted to the corresponding monoalkyl terephthalate in high yield, via a two-step procedure. This method is advantageously compared to the more representative methods described in the literature. The purification of the expected monoester, a crucial problem for this synthetic pathway, is discussed, and an original procedure has been developed. Copyright Taylor & Francis Group, LLC.

The methoxycarbonylation of aryl chlorides catalysed by palladium complexes of bis(di-tert-butylphosphinomethyl)benzene

A catalyst system based on palladium-1,2-bis-(di-tert-butylphosphinomethyl) benzene (BDTBPMB) shows good activity for the methoxycarbonylation of strongly activated aryl chlorides, like 4-chloromethylbenzoate or 4-chlorocyanobenzene. Surprisingly, the use of less activated aryl chlorides, like 4-chloroacetophenone, leads to the formation of dimethyl terephthalate amongst other products arising from organic reactions of methoxide ion and/or CO. Less nucleophilic alcohols such as 2,2,2-trifluoroethanol promote the formation of carbonylation products even from 4-chloroacetophenone and chlorobenzene. Labelling studies involving CD3OH, CD3OD or 13CO give information on the origin of many of the products. The Royal Society of Chemistry 2005.

Unsymmetrical dicarboxylic esters as bleach precursors

A bleach precursor compound, its peroxygen derivative, and detergent compositions containing these materials are disclosed herein. The bleach precursors structurally comprise a pair of different diesters, one ester containing an electrically-charged functional group. Perhydrolysis of the precursor in the presence of hydrogen peroxide and a basic aqueous media generates a peroxycarboxylic acid.