Benzene-1.4-dicarboxylic acid

Chemical Designations - Synonyms Benzene-1,3-dicarboxylic acid m-Phthalic acid Chemical Formula l,3-C4H,(COOH)2. 

Co-polymerization of pentaerythritol and two other monomers—an unsaturated acid and benzene 1,3-dicarboxylic acid—gives a network of polymer chains branching out from the quaternary carbon atom at the centre of pentaerythritol. The reaction is simply ester formation by a carbonyl substitution reaction at high temperature (> 200°C). Ester formation between acids and alcohols is an equilibrium reaction but at high temperatures water is lost as steam and the equilibrium is driven over to the right. 

BENZENE-1,3-DICARBOXYLIC ACID (88-99-3) Combustible solid (flash point 334°F/168°C). Dust and powder form explosive mixture with air. Incompatible with strong acids, alkalis, aliphatic amines, alkanolamines, alkylene oxides, ammonia, epichlorohydrin, isocyanates, nitrates, nitric acid, nitromethane, strong oxidizers, sodium nitrite. 

Beilstein Handbook Reference) Acide isophtalique AI3-16107 Benzene-1,3-dicarboxylic acid BRN 1909332 EINECS 204-506-4 HSDB 2090 IPA Isophthalate Isophthalic acid Kyselina isoftalova m-Phthalic acid NSC 15310. Needles mp = 347 bp sublimes Xm = 279 nm (MeOH) insoluble in Et20, C6H6, ligroin, slightly soluble in H2O, soluble in EtOH, AcOH. 

Benzene-1,3-dicarboxylic acid. See Isophthalic acid Benzene-1,4-dicarboxylic acid 1,4-Benzenedicarboxylic acid. See... 

Isophthalic acid (benzene-1,3-dicarboxylic acid, IPA) n. C6H4-(COOH)2. Used instead of phthahc anhydride in making unsaturated polyester resins that, when cured, have good stifihess and resistance to heat and chemicals. Molecular weight, 166.13. Crystalline powder, which melts at 345-348° C sublimes without decomposition. Merck index, 13th edn. Merck and Co. Inc., Whitehouse Station, NJ, 2001. 

Benzene-1,3-dicarboxylic acid 2-Methylbuta-1,3-diene Propan-2-ol or 1-Methylethanol 2-Hydroxypropanoic acid Dodecanoic acid Di(dodecanoyl) peroxide Dodecanol... 

In 1866 Fittig synthesised a trimethylbenzene from acetone, and in 1874 Baeyer argued that the product was 1,3,5-trimethylbenzene in view of its method of preparation (Figure 10.8). Since it was possible to demethylate this trimethylbenzene to give a xylene, it was deduced that this xylene was 1,3-dimethyl-benzene, and the dicarboxylic acid obtained when it was oxidised was benzene-1,3-dicarboxylic acid (isophthalic acid). 

Isophthalic acid Benzene-1,3-dicarboxylic acid CgH4(COOH)2... 

Benzene Chloride Benzene-1,3-Dicarboxylic Acid 1,4-Benzenediol... 

Pentamethoxy-A -tellanyl)benzene-1,3-dicarboxylic acid dimethyl ester... 

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