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
• Article Data: 5

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

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%.

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.

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.