1818-96-8

Usage

Chemical structure

1,4-Benzenedicarboxylic acid dihexyl ester

Physical properties

Colorless and odorless

Molecular weight

390.56 g/mol

Functional groups

Ester, aromatic ring

Solubility

Soluble in organic solvents, insoluble in water

Uses

a. Plasticizer in PVC products (vinyl flooring, synthetic leathers, food packaging materials)
b. Personal care products (cosmetics, lotions) to improve texture and consistency

Toxicity

Low acute toxicity

Health concerns

Potential long-term health effects, including reproductive and developmental toxicity

Regulatory status

Increasing regulatory scrutiny and efforts to reduce usage in consumer products

InChI:InChI=1/C20H30O4/c1-3-5-7-9-15-23-19(21)17-11-13-18(14-12-17)20(22)24-16-10-8-6-4-2/h11-14H,3-10,15-16H2,1-2H3

Upstream product

• 68-36-0 1,4-bis(trichloromethyl)benzene 
• 111-27-3 hexan-1-ol 
• 100-20-9 terephthaloyl chloride 
• 636-09-9 diethyl terephthalate 

Relevant academic research and scientific papers

Cesium Carbonate Catalyzed Esterification of N-Benzyl- N-Boc-amides under Ambient Conditions

We report a general activated amide to ester transformation catalyzed by Cs2CO3. Using this approach, esterification proceeds under relatively mild conditions and without the need for a transition metal catalyst. This method exhibits broad substrate scope and represents a practical alternative to existing esterification strategies. The synthetic utility of this protocol is demonstrated via the facile synthesis of crown ether derivatives and the late-stage modification of a representative natural product and several sugars in reasonable yields.

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%.

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.