89-16-7

Usage

Uses

Used in Plastic Industry:
Bis(8-methylnonyl) phthalate is used as a plasticizer for polyvinyl chloride (PVC) to enhance its flexibility, durability, and workability. It is widely used in the production of plastic films, sheets, tubes, and other plastic products.
Used in Food Packaging Industry:
Bis(8-methylnonyl) phthalate is used in plastic gaskets and seals for food packaging to ensure the freshness and quality of the packaged food products.
Used in Environmental Toxicology Studies:
Bis(8-methylnonyl) phthalate is used as a present contaminant in environmental toxicology studies to investigate its potential effects on human health and the environment. Research has shown that exposure to high levels of phthalates can lead to adverse health effects, including endocrine disruption and developmental issues.

InChI:InChI=1/C28H46O4/c1-27(2,3)19-13-7-9-15-21-31-25(29)23-17-11-12-18-24(23)26(30)32-22-16-10-8-14-20-28(4,5)6/h11-12,17-18H,7-10,13-16,19-22H2,1-6H3

Upstream product

• 85-44-9 phthalic anhydride 
• 55505-26-5 8-methyl-1-nonanol 
• 95-47-6 o-xylene 
• 131-11-3 phthalic acid dimethyl ester 

Relevant academic research and scientific papers

Preparation method of naphthenic ester which is advantageous in low apparatus cost, short esterification time and simple manufacturing process

The invention discloses a preparation method of naphthenic ester. The preparation method includes a first esterification step and a hydrogenation step. In the first esterification step, a starting raw material containing a reaction component and an alcohol component is subjected to an esterification reaction under the conditions of normal pressure and no catalysts, so as to form a crude aromatic esterification product with an acid value in a range of larger than 10 mgKOH/g and smaller than 80mgKOH/g, wherein the reaction component contains an aromatic material with a reaction group, and the reaction group is at least one of a sulfonic group, a carboxylic group, a carboxylate group and a carboxylic anhydride group, while the crude aromatic esterification product contains an aromatic ester component and the residual starting material. In the hydrogenation step, the crude aromatic esterification product is in contact with hydrogen and is subjected to a hydrogenation reaction in the existence of a catalyst so as to form a crude naphthenic ester product, wherein the crude naphthenic ester product contains a naphthenic ester component.

Method for preparing high-carbon alcohol phthalate through ester exchange under catalytic action of titanium chelates

The invention relates to a method for preparing high-carbon alcohol phthalate through ester exchange under a catalytic action of titanium chelates. Low-carbon alcohol phthalates, such as dimethyl phthalate, dicthyl ortho-phthalate and di-n-butyl phthalate, and high-carbon alcohols, such as isononyl alcohol, isodecano and 2-propyl heptanol, are taken as raw materials; titanium chelates of nitrogen-nitrogen bidentate ligands, such as phenanthroline, 2,2'-dipyridyl, quadrol, N,N- dimethyl ethylenediamine, N,N'- dimethyl ethylenediamine, N,N,N'N'- tetramethylethylenediamine and 1,2-cyclohexanediamine, are taken as catalysts; the dosage of the catalysts is 0.01-0.1% of the mass of the low-carbon alcohol phthalates; the mole ratio of high-carbon alcohols to low-carbon alcohol phthalates is 2-4;the reaction temperature is at 160-220 DEG C; the reaction time is 2-5 hours; the maximal conversion rate of low-carbon alcohol phthalates and the maximal selectivity of high-carbon alcohol phthalateboth can reach up to above 99%. The method disclosed by the invention has the advantages of high stability of raw material storage and transportation, convenience in feeding, few side effects, low consumption of raw materials, no corrosion and less dosage of catalysts, and the like.

A liquid phase oxidation of O-xylene with esterification coupling preparation of phthalic acid diester method

The invention relates to a method for preparation of diester phthalate by o-xylene liquid-phase oxidation and esterification coupling. In the presence of a catalyst, air or oxygen is used as an oxygen source for preparation of the diester phthalate by o-xylene liquid-phase oxidation and esterification coupling. The method has the advantages of mild reaction conditions, safe operation, low raw material and energy consumption, high conversion rate and high selectivity and the like.

Process for producing carboxylic acid esters and catalysts therefor

A process for producing carboxylic acid esters by the following steps: a) preparation of a reaction mixture containing an alcohol and a carboxylic acid and/or a carboxylic anhydride and/or a carboxylic acid ester and or a partially esterified carboxylic acid, b) heating of this mixture to the suitable reaction temperature in the presence of a solid polysiloxane insoluble in the reaction medium and having sulphonic acid groups with intensive thorough mixing accompanied by continuous separation of the reaction water which forms, wherein the polysiloxane used as the catalyst in modified by treatment with a soluble aluminum, titanium or zirconium compound, and the spherical particles thereof have a diameter of 0.01 to 3 mm, a specific surface of 0.1 to 1200 m2 /g, a specific pore volume of 0.01 to 6.0 ml/g and a bulk density of 50 to 1000 g/l.

Catalyst composition and method for the manufacture of esters

An improved method for the manufacture of purified esters is provided. The method comprises reaction of carboxylic acids or anhydrides with alcohols in the presence of certain novel chelated titanate catalysts having unique structural features that provide means for simplification of the refining process as well as for improving reaction rates, ester yield and product quality.