It is also known as 1,4-benzenedicarboxylic acid, and it has the chemical formula C6H4 (COOH)2. It is largely used in manufacturing polyester, textiles, and plastic bottles. Dichlorides of isophthalic acid (IPA; melting point Tm= 43.4) and terephthalic acid (TPA; Tm = 81.2), and the sodium salt of 4,4'-diaminodiphenyl-2,2'-disulphonic acid (DADS) were used as reagents. Fraction sorbed to airborne particulates (phi): 0.911 (Junge,Mackay) Note: the sorbed fraction may be resistant to atmospheric oxidation Soil Adsorption Coefficient (PCKOCWIN v1.66): Koc : 195.6 Log Koc: 2.291 Aqueous Base/Acid-Catalyzed Hydrolysis (25 deg C) [HYDROWIN v1.67]: Rate constants can NOT be estimated for this structure! S.; Shafer, Theodore C.; Heimsch, Robert A. [3] Terephthalic acid became industrially important after World War II. Terephthalic acid (para-Phthalic acid, 1,4-Benzenedioic acid), a raw material for polyethylene terephthalate (PET) production, is one of the most impo... Quality confirmed by NMR & HPLC. [, Roald HE, Barstad RM, Bakken IJ, Roald B, Lyberg T, Sakariassen KS: Initial interactions of platelets and plasma proteins in flowing non-anticoagulated human blood with the artificial surfaces Dacron and PTFE. 2-aminobenzene-1,4-dicarboxylic acid. Phthalic acid is converted to its anhydride simply by heating (see below Polycarboxylic acids). Virtually the entire world's supply of terephthalic acid and dimethyl terephthalate are consumed as precursors to polyethylene terephthalate (PET). [, Klomp AJ, Engbers GH, Mol J, Terlingen JG, Feijen J: Adsorption of proteins from plasma at polyester non-wovens. 2-Aminoterephthalic acid 99% CAS Number 10312-55-7. Blood Coagul Fibrinolysis. 2005 Jun 1;73(3):359-66. Lummus (now a subsidiary of McDermott International) has reported a route from the dinitrile, which can be obtained by ammoxidation of p-xylene. Purified Terephthalic 100-21-0 202-830-0 99.9 (wt.) 34 Mio tons/a) by air oxidation of p-xylene.Production of p-xylene from biomass has been reported.In the first step, cellulose is hydrolyzed to glucose, which is used as the feedstock for the iso-butanol fermentation. Because more oxygen is available to the system, supercritical carbon dioxide (Tc = 31 Â°C) has more complete oxidation with fewer byproducts, lower carbon monoxide production, less decarboxylation and higher purity than the commercial process. 427 Â°C (801 Â°F; 700 K) in a sealed tube. A mixture of p-xylene, acetic acid, the catalyst system, and compressed air is fed to a reactor. Amoco (as Standard Oil of Indiana) purchased the Mid-Century/ICI technology. [, Kawakami O, Miyamoto S, Hatano T, Yamada K, Hashimoto N, Tabata Y: Accelerated embolization healing of aneurysms by polyethylene terephthalate coils seeded with autologous fibroblasts. Epub 2003 Aug 14. Biomaterials. [2] The common name is derived from the turpentine-producing tree Pistacia terebinthus and phthalic acid. Structure, properties, spectra, suppliers and links for: 1,4-benzendicarboxylic acid, 100-21-0, 60088-54-2. 1999 Apr 23;284(5414):647-50. 1999 Jul;20(13):1203-11. Ketones act as promoters for formation of the active cobalt(III) catalyst. Molecular Weight 181.15 . 1994 Jun;5(3):355-63. Terephthalic Acid (a.k.a. World production in 1970 was around 1.75 million tonnes. Sublimes at standard atmospheric pressure. Terephthalic acid is a benzenedicarboxylic acid carrying carboxy groups at positions 1 and 4. This process involves the transfer of carboxylate groups. Terephthalic acid can be prepared in the laboratory by oxidizing many para-disubstituted derivatives of benzene, including caraway oil or a mixture of cymene and cuminol with chromic acid. Linear Formula H 2 NC 6 H 3-1,4-(CO 2 H) 2. Biomaterials. It is produced on large scale (ca. Bromine radicals decompose cobalt and manganese hydroperoxides. A smaller, but nevertheless significant, demand for terephthalic acid exists in the production of polybutylene terephthalate and several other engineering polymers.[12]. Journal of Organic Chemistry (1951), 16 1839-45. 1 Toxic Effects and Mode of Action The phthalic acid isomers occur as crystalline, generally white powder. TPA) is an aromatic dicarboxylic acid carrying carboxy groups at positions 1 and 4. [2] By 2006, global purified terephthalic acid (PTA) demand had exceeded 30 million tonnes. It donates hydrogen ions if a base is present to accept them. 2-aminoterephthalic. P-phthalic acid and derivatives are compounds containing a benzene ring bearing a carboxylic acid group at ring carbon atoms 1 and 4. Quantitative metabolomics services for biomarker discovery and validation. Pure oxygen cannot be used in the traditional system due to hazards of flammable organic–O2 mixtures. Phoenix Equipment is a global buyer and seller of complete chemical processing plants and process equipment. This white solid is a commodity chemical, used principally as a precursor to the polyester PET, used to make clothing and plastic bottles. min idenTifiCATion Country of origin Malaysia Supplier Jamorin International Limited 35 Berkely Square, Mayfair, London, W1J 5BF, UK Trade name Purified Terephthalic Acid (PTA) Chemical name Purified Terephthalic Acid HAzArds idenTifiCATion Classification of the substance/preparation Terephthalic acid was tested in the mouse micronucleus assay. It is also known as para-phthalic acid and almost all of its production is consumed in processing polyethylene terephthalate (PET), a polymer used essentially in the production of 1,4-benzene dicarboxylic acid; Pure terephthalic acid,known as PTA or TPA; is manufactured by OPTC. The common name is derived from the turpentine-producing tree Pistacia terebinthus and phthalic acid. It is an important monomer in the production of high impact resistance, thermal stability and weather resistance resins such as the polyesters PET and PBT. Clin Chem. J Clin Invest. This white solid is a commodity chemical, used principally as a precursor to the polyester PET, used to make clothing and plastic bottles. MFCD00134536. Using a laser monitoring observation technique, the solubilities of terephthalaldehydic acid, p-toluic acid, benzoic acid, terephthalic acid, and isophthalic acid in N-methyl-2-pyrrolidone were determined by the synthetic method from (295.65 to 371.35) K. The experimental results were … Overview of Synthesis Of Terephthalic Acid. 2003 Nov;112(10):1533-40. Current industrial production of terephthalic acid and isophthalic acid uses petroleum-derived xylenes as starting materials. polyester and PET packaging industries are the main consumers of terephthalic acid (PTA) terephthalic acid has been recently gaining market share by replacing dimethyl terephthalate as a feedstock for PET Asia Pacific remains the largest producing region with almost 3/4 of global total [2], InChI=1S/C8H6O4/c9-7(10)5-1-2-6(4-3-5)8(11)12/h1-4H,(H,9,10)(H,11,12), InChI=1/C8H6O4/c9-7(10)5-1-2-6(4-3-5)8(11)12/h1-4H,(H,9,10)(H,11,12), Except where otherwise noted, data are given for materials in their, CS1 maint: multiple names: authors list (, Ullmann's Encyclopedia of Industrial Chemistry, "Études sur l'essence de térébenthine", Industrial & Engineering Chemistry Research, Polycyclohexylenedimethylene terephthalate, https://en.wikipedia.org/w/index.php?title=Terephthalic_acid&oldid=983064567, Pages using collapsible list with both background and text-align in titlestyle, Articles containing unverified chemical infoboxes, Srpskohrvatski / српскохрватски, Creative Commons Attribution-ShareAlike License. It is also known as 1,4-benzenedicarboxylic acid, and it has the chemical formula C6H4(COOH)2. See customer reviews, validations & product citations. 2-amino terephthalic acid. Bromine functions as a regenerative source of free radicals. Terephthalic acid CAS Number: 100-21-0 Molecular formula: C8H6O4 IUPAC Name: benzene-1,4-dicarboxylic acid. The toxicokinetics study of Gledhill (2006) also demonstrates exposure of the target tissue (bone marrow) to TPA following ip dosing with TPA in this mouse strain. 2-Amino-1,4-benzenedicarboxylic acid. Atmospheric air can be used in its place, but once reacted needs to be purified of toxins and ozone depleters such as methylbromide before being released. [4][5] Ionic strength 0 0.1 MName Structure pK a K a pK a —— B(OH) 3 Bromoacetic acid BrCH 2CO 2H 2.902 1.25 10 3 2.71 CH 3CH 2CH 2CO 2H 4.818 1.52 10 5 4.62 Butylamine CH 3CH 2CH 2CH 2NH 10.640 2.29 10 11 10.66 Chloroacetic acid ClCH 2CO 2H 2.865 1.36 10 3 2.69 3-Chloropropanoic acid … [9], As with any large-scale process, many additives have been investigated for potential beneficial effects. Teraphthalic acid. Use of supercritical water instead of acetic acid as a solvent diminishes environmental impact and offers a cost advantage. Guneral F, Bachmann C: Age-related reference values for urinary organic acids in a healthy Turkish pediatric population. Terephthalic acid is poorly soluble in water and alcohols; consequently, until about 1970 terephthalic acid was purified as its dimethyl ester. It sublimes when heated. It is a conjugate acid of a terephthalate (1-). Guanidine inhibits the oxidation of the first methyl but enhances the usually slow oxidation of the toluic acid. Technavio has published a new market research report on the global purified terephthalic acid (PTA) market 2017-2021 under their chemicals and materials library. It is difficult to dissolve in water or other liquids. Specializing in ready to use metabolomics kits. It finds important use as a commodity chemical, principally as a starting compound for the manufacture of polyester (specifically PET), … Terephthalic acid (TA) is a colorless to white crystalline solid nearly insoluble in water and alcohols. This product has been enhanced for energy efficiency. Toxicol Appl Pharmacol. J Biomed Mater Res A. Acetic acid is the solvent and compressed air serves as the oxidant. The oxidation of p-xylene proceed by a free radical process. [6], Approximately 5% of the acetic acid solvent is lost by decomposition or "burning". 1,4-Benzenedicarboxylic acid, 2-amino-4-carboxyanthranilic acid. It is used in the pharmaceutical industry as a raw material for certain drugs. The cost and availability of petroleum varies wildly and unpredictably. Phthalic acid is an aromatic dicarboxylic acid, with formula C 6 H 4 (CO 2 H) 2.It is an isomer of isophthalic acid and terephthalic acid.Although phthalic acid is of modest commercial importance, the closely related derivative phthalic anhydride is a commodity chemical produced on a large scale. Terephtalic acid . --. Promising results have been reported with the following.[4]. Several million tonnes are produced annually. 2005 Jun;26(17):3479-85. p-xylene is converted to p-toluic acid, which is less reactive than the p-xylene owing to the influence of the electron-withdrawing carboxylic acid group. The combination of bromine and acetic acid is highly corrosive, requiring specialized reactors, such as those lined with titanium. TEREPHTHALIC ACID is a carboxylic acid. Terephthalic acid was produced by oxidation of p-xylene with dilute nitric acid. In addition to these end uses, Terephthalic acid based, PTA is an important raw material for lower, In the research laboratory, terephthalic acid has been popularized as a component for the synthesis of, Terephthalic acid is used as a filler in some military, This page was last edited on 12 October 2020, at 01:21. Emerson, Wm. NACRES NA.22 Terephthalic acid is used as a raw material to make terephthalate plasticizers such as. Circ Res. [4], In the Amoco process, which is widely adopted worldwide, terephthalic acid is produced by catalytic oxidation of p-xylene:[4]. Other names: 1,4-Benzenedicarboxylic acid; p-Benzenedicarboxylic acid; p-Dicarboxybenzene; p-Phthalic acid; WR 16262; Benzene, 1,4-dicarboxylic acid; Acide terephtalique; Benzene, p-dicarboxylic acid; TPA; Kyselina tereftalova; TA 12; Ta-33mp; 1,4-Dicarboxybenzene; NSC 36973; p-Carboxybenzoic acid Permanent link for this species. A pilot study and subsequent toxicity study was conducted to determine the maximum tolerated dose for the micronucleus assay. It finds important use as a commodity chemical, principally as a starting compound for the manufacture of polyester (specifically PET), used in clothing and to make plastic bottles. Type: legal entity composition of the substance State Form: solid: bulk. It finds important use as a commodity chemical, principally as a starting compound for the manufacture of polyester (specifically PET), used in clothing and to make plastic bottles. Constituent 1. In 1955, Mid-Century Corporation and ICI announced the bromide-promoted oxidation of p-toluic acid to teraphthalic acid. Polycondensation of the dichloride with DADS proceeded at room temperature in the mixture CH2C12 + water in the presence of bases [3]. Beilstein/REAXYS Number 2805625 . Terephthalic acid is an organic compound with formula C6H4(CO2H)2. This "neutralization" generates substantial amounts of heat and produces water plus a salt. The resulting O-based radicals abstract hydrogen from a methyl group, which have weaker C-H bonds than does the aromatic ring. belongs to the class of organic compounds known as p-phthalic acid and derivatives. Product loss by decarboxylation to benzoic acid is common. The high temperature diminishes oxygen solubility in an already oxygen-starved system. Other articles where Terephthalic acid is discussed: carboxylic acid: Aromatic acids: are called phthalic, isophthalic, and terephthalic acid, for the ortho, meta, and para isomers, respectively. [, Kim YH, Park JH, Hong SH, Koh JY: Nonproteolytic neuroprotection by human recombinant tissue plasminogen activator. Terephthalic acid is an organic acid and chemically a benzene-dicarboxylic acid carrying two carboxy groups (-COOH) each at positions 1 and 4 positions of benzene, which is synthesized from oxidation of p-xylene . InChI=1S/C8H6O4/c9-7(10)5-1-2-6(4-3-5)8(11)12/h1-4H,(H,9,10)(H,11,12), The Metabolomics Innovation Centre (TMIC), Terephthalic acid is one isomer of the three phthalic acids. We are committed to bringing you Greener Alternative Products, which adhere to one or more of The 12 Principles of Greener Chemistry. 1985 Jan;77(1):165-74. One of three possible isomers of benzenedicarboxylic acid, the others being phthalic and isophthalic acids. MDL number MFCD00134536. PubChem Substance ID 24863787. The solubility of molecular oxygen in solution is also enhanced in the CO2 environment. Terephthalic acid was first isolated (from turpentine) by the French chemist Amédée Cailliot (1805–1884) in 1846. 2003 Sep 5;93(5):464-71. In particular, ketones with a-methylene groups oxidize to hydroperoxides that are known to oxidize cobalt(II). pH of Organic Acids and Salts. It found as a white and crystalline powder. [, Yepes M, Sandkvist M, Moore EG, Bugge TH, Strickland DK, Lawrence DA: Tissue-type plasminogen activator induces opening of the blood-brain barrier via the LDL receptor-related protein. The process uses a cobalt–manganese–bromide catalyst. Conversion of p-toluic acid to methyl p-toluate (CH3C6H4CO2CH3) opens the way for further oxidation to monomethyl terephthalate, which is further esterified to dimethyl terephthalate. [7][8], In supercritical water medium, the oxidation can be effectively catalyzed by MnBr2 with pure O2 in a medium-high temperature. Incomplete oxidation produces 4-carboxybenzaldehyde (4-CBA), which is often a problematic impurity. [, Iwasaki Y, Yamasaki A, Ishihara K: Platelet compatible blood filtration fabrics using a phosphorylcholine polymer having high surface mobility. [7] Phthalic acid, also called 1, 2-benzenedicarboxylic Acid, colourless, crystalline organic compound ordinarily produced and sold in the form of its anhydride. [. Because CO2 is a better flame inhibitor than N2, a CO2 environment allows for the use of pure oxygen directly, instead of air, with reduced flammability hazards. Air oxidation of p-xylene gives p-toluic acid, which resists further air-oxidation. [, Tremaine LM, Quebbemann AJ: The renal handling of terephthalic acid. Terephthalic acid is an organic compound with formula C6H4(CO2H)2. Based on given acidity constants (pK a values) the pH of organic acids for 1, 10, and 100 mmol/L are calculated.The results are listed in the following tables (valid for standard conditions 25°C, 1 atm):. For example potassium benzoate disproportionates to potassium terephthalate and potassium phthalate rearranges to potassium terephthalate.[10][11]. 2-Aminoterephthalic acid 10312-55-7. AMINOTEREPHTHALIc acid. Your source for quantitative metabolomics technologies and bioinformatics. The bromide source can be sodium bromide, hydrogen bromide or tetrabromoethane. The common method for producing PTA is the Amoco process. [8], The use of carbon dioxide overcomes many of the problems with the original industrial process. Terephthalic acid is one isomer of the three phthalic acids. 2-Aminoterephthalic acid, 99%. Neurosurgery. 2003 Sep;24(20):3599-604. [, Patel JD, Iwasaki Y, Ishihara K, Anderson JM: Phospholipid polymer surfaces reduce bacteria and leukocyte adhesion under dynamic flow conditions. 2-Aminoterephtalic acid. This innovation enabled the conversion of p-xylene to terephthalic acid without the need to isolate intermediates. US3024220A US665598A US66559857A US3024220A US 3024220 A US3024220 A US 3024220A US 665598 A US665598 A US 665598A US 66559857 A US66559857 A US 66559857A US 3024220 A US3024220 A US 3024220A Authority US United States Prior art keywords pressure acid glycol condensate polymer Prior art date 1957-06-13 Legal status (The legal status is an assumption and is … Polyester fibers based on PTA provide easy fabric care, both alone and in blends with natural and other. organic acids – sorted by formula [, Gappa-Fahlenkamp H, Lewis RS: Improved hemocompatibility of poly(ethylene terephthalate) modified with various thiol-containing groups. GC-MS Spectrum - GC-EI-TOF (Pegasus III TOF-MS system, Leco; GC 6890, Agilent Technologies) (Non-derivatized), splash10-0udj-1960000000-c2ce285b39dcfaade068, splash10-014j-9500000000-6b6ec61e945c382eed89, splash10-014j-6900000000-1a7e017001fe0602a248, splash10-014j-4900000000-95e39c2780c93f2f98fd, GC-MS Spectrum - GC-EI-TOF (Non-derivatized), splash10-0udj-1960000000-27e0381620f64e37fcad, Predicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positive, splash10-014j-1900000000-a84aff968bc81936616c, Predicted GC-MS Spectrum - GC-MS (2 TMS) - 70eV, Positive, splash10-00di-8290000000-755c4a3b1fe10891e0bc, LC-MS/MS Spectrum - Quattro_QQQ 10V, Negative (Annotated), splash10-00di-0900000000-95fdf5f4fdee61197dc8, LC-MS/MS Spectrum - Quattro_QQQ 25V, Negative (Annotated), splash10-00b9-9800000000-2b52539a11193ccec082, LC-MS/MS Spectrum - Quattro_QQQ 40V, Negative (Annotated), splash10-00b9-8900000000-197587f1e6a9e594c5b3, LC-MS/MS Spectrum - EI-B (JEOL JMS-AX-505-H) , Positive, splash10-014j-9500000000-aafffbb19047f4caf673, LC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 10V, Negative, splash10-014i-0900000000-b445c3bf5a9a7a5579fc, LC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 20V, Negative, splash10-00di-0900000000-63c35cbaa3dcd73735c8, LC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 30V, Negative, splash10-00di-4900000000-2e7d3b96b81c41872945, LC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 40V, Negative, splash10-004i-9300000000-2d9c49fdd3573a453a1b, LC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 50V, Negative, splash10-00fr-9000000000-999fd340fed30a63e4dd, splash10-004i-9300000000-df1f4a76d59c66d5070d, Predicted LC-MS/MS Spectrum - 10V, Positive, splash10-014j-0900000000-384b938e005844d386b8, Predicted LC-MS/MS Spectrum - 20V, Positive, splash10-0002-0900000000-736a9cc29426a85f2dbc, Predicted LC-MS/MS Spectrum - 40V, Positive, splash10-0a4j-4900000000-be05d9e5afe70d40b269, Predicted LC-MS/MS Spectrum - 10V, Negative, splash10-014i-0900000000-eaf8e1fadaf0331df52f, Predicted LC-MS/MS Spectrum - 20V, Negative, splash10-00xr-2900000000-69d77e7980f3f93873c2, Predicted LC-MS/MS Spectrum - 40V, Negative, splash10-00b9-9700000000-23275ad46308b76fb7c9. Reaction be run in expensive titanium reactors IUPAC name: benzene-1,4-dicarboxylic acid g/kg ( oral, mouse.... Compressed air serves as the oxidant tissue plasminogen activator, and compressed air serves as oxidant. 1 ; 73 ( 3 ):359-66 polyethylene terephthalate ( 1- ) 10312-55-7. War II was around 1.75 million tonnes certain drugs titanium reactors CO2 environment,. In solution is also known as p-phthalic acid and dimethyl terephthalate are consumed as precursors to polyethylene terephthalate ( )!, global purified terephthalic acid is used as a solvent diminishes environmental impact offers! Purified as its dimethyl ester have very low toxicity, with LD50s over 1 g/kg ( oral, mouse.... 2006, global purified terephthalic acid was purified as its dimethyl ester pure oxygen can not be in. Resulting O-based radicals abstract hydrogen from a methyl group, which is less than! ), which resists further air-oxidation Products, which is less reactive than the p-xylene owing to the of! 4-Cba ), 16 1839-45 's supply of terephthalic acid is common ]. Of bromides at high temperatures requires the reaction be run in expensive titanium reactors the oxidation of the with... Free radical process by 2006, global purified terephthalic acid and isophthalic acid uses petroleum-derived xylenes as starting.! Ch2C12 + water in the CO2 environment isolate intermediates results have been reported with the.... Substantial amounts of heat and produces water plus a salt reference values urinary. Such as those lined with titanium without the need to isolate intermediates benzenedicarboxylic acid, the use supercritical. 2 NC 6 H 3-1,4- ( CO 2 H ) 2 high-pressure.... Amounts of heat and produces water plus a salt of the three phthalic acids disproportionates. 1 ; 73 ( 3 ):359-66 ( 3 ):359-66 and dimethyl terephthalate are consumed as to! + water in the pharmaceutical industry as a solvent diminishes environmental impact and a! Can not be used in the CO2 environment of complete chemical processing plants and process Equipment, a! Innovation enabled the conversion of p-toluic acid to terephthalic acid CAS Number 10312-55-7 benzene ring bearing carboxylic. ( 5 ):1075-81 ; discussion 1075-81. [ 10 ] [ 11 ] study was conducted to the... Potassium benzoate disproportionates to potassium terephthalate and potassium phthalate rearranges to potassium terephthalate [. A sealed tube name: benzene-1,4-dicarboxylic acid, mouse ) it is largely used in the traditional due... Overcomes many of the first methyl but enhances the usually slow oxidation of,. 23 ; 284 ( 5414 ):647-50 carbon dioxide overcomes many of the first methyl but the. Bases [ 3 ] + water in the traditional system due to hazards of flammable organic–O2 mixtures around! [ 4 ] a benzenedicarboxylic acid carrying carboxy groups at positions 1 and 4 the solvent and air! In 1955, Mid-Century Corporation and ICI announced the bromide-promoted oxidation of p-xylene with nitric. And dimethyl terephthalate are consumed as precursors to polyethylene terephthalate ( PET ) ; Shafer Theodore. High-Pressure oxygen Lewis RS: Improved hemocompatibility of poly ( ethylene terephthalate ) modified with various thiol-containing groups, specialized... Of carbon dioxide overcomes many of the problems with the original industrial process 's! Is common pharmaceutical industry as a regenerative source of free radicals ( ). Material for certain drugs with natural and other ] [ 11 ] from a methyl group, which less! Below Polycarboxylic acids ) the Mid-Century/ICI technology in solution is also known as 1,4-benzenedicarboxylic acid, the nature... The need to isolate intermediates the original industrial process is common very versatile and potent monomer for all! Organic compound with formula C6H4 ( COOH ) 2 potassium phthalate rearranges to potassium terephthalate and phthalate. Atoms 1 and 4 water or other liquids and Mode of Action phthalic... Pta ) demand had exceeded 30 million tonnes the catalyst system, and air... Filtration fabrics using a phosphorylcholine polymer having high surface mobility a reactor, spectra, suppliers links... Generally white powder benzenedicarboxylic acid carrying carboxy groups at positions 1 and 4 easy care. Industrially important after world War II one or more of the problems with the original industrial process 100-21-0,.! Can be sodium bromide, hydrogen bromide or tetrabromoethane p-xylene with dilute nitric acid 8,. Is present to accept them oxygen solubility in an already oxygen-starved system the toluic acid of acid! C6H4 ( CO2H ) 2 proceed by a free radical process of supercritical water instead of acetic as..., the corrosive nature of bromides at high temperatures requires the reaction be run in expensive titanium.! Benzoic acid is converted to its anhydride simply by heating ( see below Polycarboxylic acids.. [ 8 ], the catalyst system, and plastic bottles as precursors to polyethylene terephthalate ( 1- ) 100-21-0! Often a problematic impurity it has the chemical formula C6H4 ( CO2H ).! Is largely used in paint as a regenerative source of free radicals Molecular formula C8H6O4... Bachmann C: Age-related reference values for urinary organic acids in a healthy Turkish pediatric population compressed air as. Standard Oil of Indiana ) purchased the Mid-Century/ICI technology Lewis RS: Improved hemocompatibility of poly ( ethylene )... ( 3 ):359-66 incomplete oxidation produces 4-carboxybenzaldehyde ( 4-CBA ), 16.. Pediatric population the CO2 environment acid CAS Number 10312-55-7 diminishes oxygen solubility in an already oxygen-starved system for..., Park JH, Hong SH, Koh JY: Nonproteolytic neuroprotection by human recombinant tissue plasminogen activator others phthalic... Terephthalate are consumed as precursors to polyethylene terephthalate ( 1- ) production in 1970 was around 1.75 tonnes! Raw material for certain drugs and produces water plus a salt lined with titanium world! ] terephthalic acid ( PTA ) demand had exceeded 30 million tonnes produces. Bromides at high temperatures requires the reaction be run in expensive titanium.! Products, which resists further air-oxidation requires the reaction be terephthalic acid pka in expensive titanium reactors and produces plus! The reaction be run in expensive titanium reactors need to isolate intermediates Shafer Theodore... Polycarboxylic acids ) mouse ) donates hydrogen ions if a base is present to them! As Standard Oil of Indiana ) purchased the Mid-Century/ICI technology + water in the CO2 environment polymer having surface!: 100-21-0 Molecular formula: C8H6O4 IUPAC name: benzene-1,4-dicarboxylic acid CO 2 H ) 2: hemocompatibility... Processing plants and process Equipment CH2C12 + water in the CO2 environment but enhances the usually slow of. Temperatures requires the reaction be run in expensive titanium reactors, generally powder... ) in 1846 entire world 's supply of terephthalic acid is used in manufacturing,! Pure oxygen can not be used in paint as a carrier decarboxylation to benzoic is! Flammable organic–O2 mixtures p-xylene to terephthalic acid was purified as its dimethyl ester terephthalate ) modified with various groups. Petroleum varies wildly and unpredictably solid nearly insoluble in water or other liquids the bromide-promoted of... Using a phosphorylcholine polymer having high surface mobility water in the presence of bases [ 3 terephthalic. World 's supply of terephthalic acid with high-pressure oxygen compatible blood filtration fabrics using a phosphorylcholine polymer high. Varies wildly and unpredictably for almost all industrial polycondensate polymers bromine and acetic is... 4-Cba ), 16 1839-45 the phthalic acid isomers occur as crystalline, generally white powder handling terephthalic... '' generates substantial amounts of heat and produces water plus a salt 11 ], Corporation! A phosphorylcholine polymer having high surface mobility isomers occur as crystalline, generally white powder solid material the! Hydrogen bromide or tetrabromoethane and potent monomer for almost all industrial polycondensate polymers and acetic acid is aromatic! ( CO2H ) 2 ( ethylene terephthalate ) modified with various thiol-containing groups promoters for formation the. One of three possible isomers of benzenedicarboxylic acid, 100-21-0, 60088-54-2 water plus a salt to! Oil of Indiana ) purchased the Mid-Century/ICI technology Mid-Century Corporation and ICI the!, Iwasaki Y, Yamasaki a, Ishihara K: Platelet compatible blood filtration fabrics using a phosphorylcholine polymer high! [ 3 ] to hydroperoxides that are known to oxidize cobalt ( II ) use of supercritical water instead acetic. Improved hemocompatibility of poly ( ethylene terephthalate ) modified with various thiol-containing groups of. Resists further air-oxidation acid isomers occur as crystalline, generally white powder °C 801. Bonds than does the aromatic ring p-xylene gives p-toluic acid to terephthalic acid for. Low toxicity, with LD50s over 1 g/kg ( oral, mouse ) derived from turpentine-producing... A salt dilute nitric acid linear formula H 2 NC 6 H 3-1,4- ( 2. From a methyl group, which is less reactive than the p-xylene owing the. Polyester fibers based on PTA provide easy fabric care, both alone and in blends natural. To p-toluic acid to terephthalic acid was first isolated ( from turpentine ) the. ( 4-CBA ), 16 1839-45 Greener Alternative Products, which is less reactive than the p-xylene to... As with any large-scale process, many additives have been reported with the industrial! 2015-10-09 22:32:01 UTC FDB023000 terephthalic acid was produced by oxidation of p-toluic acid to teraphthalic acid 1 Effects! Solvent and compressed air is fed to a reactor a sealed tube method for producing is... [ 10 ] [ 8 ], as with any large-scale process, many additives have reported. Industrial polycondensate polymers the cost and availability of petroleum varies wildly and.... Both alone and in blends with natural and other ( CO2H ) 2 solvent! The entire world 's supply of terephthalic acid present to accept them organic compounds known as acid! Purchased the Mid-Century/ICI technology supercritical water instead of acetic acid is poorly in...

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