Terephthalic acid is an organic compound with formula C 6 H 4 (CO 2 H) 2.This white solid is a commodity chemical, used principally as a precursor to the polyester PET, used to make clothing and plastic bottles.Several million tonnes are produced annually. It is also used in constructing roads and it also has many other engineering applications. No. Traductions en contexte de "phthalic acid" en anglais-français avec Reverso Context : process for producing phthalic acid compound including chlorinated aromatic ring The molecular formula of phthalic acid is available in chemical formula page of phthalic acid, which identifies each constituent element by its chemical symbol and indicates the proportionate number of atoms of each element. Abstract We have performed a model study to explore the influence of surface structure on the anchoring of organic molecules on oxide materials. “Phthalic acid can be converted to phthalic anhydride by heating the acid above 180°C. The most well-known and highly effective method of synthesizing a phthalic acid is to oxidize a naphthalene acid by using potassium dichromate or potassium permanganate. ChemSynthesis Chemical database. Abstract. This structure is also available as a 2d Mol file or as a computed 3d SD file The 3d structure may be viewed using Java or Javascript. I do understand why the other compound will not form phthalic acid. S3A–E). Other names: 1,3-Isobenzofurandione; ESEN; Phthalandione; Phthalic acid anhydride; Retarder AK; Retarder ESEN; Retarder PD; TGL 6525; Vulkalent B/C; 1,2-Benzenedicarboxylic anhydride; 1,3-Phthalandione; 1,2-Benzenedicarboxylic acid anhydride; 1,3 … asked Mar 27 '17 at 17:24. Molecular Formula C 8 H 6 O 4, molecular weight 166.13.A colorless crystal. 166.131; All; Links to Resources; Names & Synonyms; … The contents of this page can freely be shared if cited as follows: Heat of Vaporization at Normal Boiling Point, LogP (Octanol-Water Partition Coefficient), Ghose-Crippen Octanol-Water Partition Coefficient (logP), Moriguchi Octanol-Water Partition Coefficient (logP), Activity Score for Ion Channel Modulators, Activity Score for Nuclear Receptor Ligands, Structure Data File (SDF/MOL File) of phthalic acid, download in the SDF page of phthalic acid, InChI=1S/C8H6O4/c9-7(10)5-3-1-2-4-6(5)8(11)12/h1-4H,(H,9,10)(H,11,12), 18 atom(s) - 6 Hydrogen atom(s), 8 Carbon atom(s) and 4 Oxygen atom(s), 18 bond(s) - 12 non-H bond(s), 8 multiple bond(s), 2 rotatable bond(s), 2 double bond(s), 6 aromatic bond(s), 1 six-membered ring(s), 2 carboxylic acid(s) (aromatic) and 2 hydroxyl group(s), Phthalic acid, United States Pharmacopeia (USP) Reference Standard, Phthalic acid, European Pharmacopoeia (EP) Reference Standard, Phthalic acid, Vetec(TM) reagent grade, 98%, Phthalic acid, SAJ special grade, >=99.0%, 1,2-Benzenedicarboxylic acid, 1-methyl-1,2-ethanediyl diisooctyl ester, 1,2-Propylene glycol, bis(isooctyl phthalate). Using these structures, we previously investigated the influence of the surface structure on the binding geometry and mechanism of phthalic acid by time-resolved isothermal infrared reflection absorption spectroscopy (IRAS). Carboxylic acids are organic compounds which incorporate a carboxyl functional group, CO 2 H. The name carboxyl comes from the fact that a carbonyl and a hydroxyl group are attached to the same carbon. Structure of the carboxyl acid group. The solubilities of benzoic acid and phthalic acid in acetic acid + water solvent mixtures are determined by a static method. Phthalic acid is one of three isomers of benzenedicarboxylic acid, the others being isophthalic acid and terephthalic acid. Synthesis, crystal structure and Thermogravimetry of ortho-phthalic acid bridged coordination polymer of Copper(II) ... o-phthalic acid. UnitPot is a noteworthy web-based scientific unit converter that comes with an intuitive user interface. AutoDock 4.2.6 was used to perform the docking of PAEs with hACMSD . Ortho-Phthalic acid, Benzene-1,2-dioic acid, 1,2-Benzenedioic acid, etc. 2013b). Classification Code. A chemical structure of a molecule includes the arrangement of atoms and the chemical bonds that hold the atoms together. Phthalic acid, which is ortho-benzene-dicarboxylic acid, C8H6O4, is a solid at ordinary room temperature. The chemical formula of phthalic acid was found to be C₈H₆O₄. Hence, the degradation efficiency is dependent on the organic acid chemical structure. It is also used as an insulating material as it can help in making a place, which sound proof and keeps the temperature under control. 18 The excellent “chemical resolution” of IRAS allows differentiating between differently anchored species. share | improve this question | follow | edited Mar 28 '17 at 18:58. The crystal structure of phthalic acid is being determined by us at a temperature of about --150 ° C. Substantially the same structure as described by van Schalkwyk (1954) has been found independently. A chemical structure of a molecule includes the arrangement of atoms and the chemical bonds that hold the atoms together. Phthalic acid, also called 1, 2-benzenedicarboxylic Acid, colourless, crystalline organic compound ordinarily produced and sold in the form of its anhydride. Isophthalic acid is an organic compound with the formula C 6 H 4 (CO 2 H) 2. Phthalic acid, 3-nitro-. The radius of the spheres is therefore smaller than the rod lengths in order to provide a clearer view of the atoms and bonds throughout the chemical structure model of phthalic acid divinyl ester. Molecular Formula: C 8 H 6 O 4; Molecular Weight: 166.133 g/mol; Cas Number: 88-99-3 ; EINECS Number: 201-873-2; MDL Number: MFCD00002467 ; InChIKey: XNGIFLGASWRNHJ-FLKJISBTCG; … Therefore, in order to effectively reduce phthalic acid ester contamination in soil, it is necessary to remove the spent plastic mulch from the field and recycle or dispose of it in an environmentally responsible manner. It can get degraded in presence of a bacteria called Pseudomonas sp. It generally exists in a solid-state and was observed to have a white color. Phthalic acid has a chemical formula C 6 H 4 (CO 2 H) 2 and comprises a six-carbon benzene ring with two carboxylic acid groups (-COOH) attached. The temperature of 206 ° C (decomposition), density (20 / 4 ° C) 1.593g/cm 3 rapidly heated to 230 ° C, the melting and decomposition of water and phthalic anhydride. Singh N(1), Dalal V(1), Kumar P(2). A dicarboxylic acid that is aromatic and has a general formula of C₆H₄(CO₂H)₂ is called phthalic acid. Phthalic acid is a dicarboxylic acid that is aromatic and has a general formula C₆H₄(CO₂H)₂. 603-11-2. Phthalic acid Guidechem provides Phthalic acid chemical database query, including CAS registy number 88-99-3, Phthalic acid MSDS (Material Safety Data Sheet), nature, English name, manufacturer, function/use, molecular weight, density, boiling point, melting point, structural formula, etc. Unlike most such conversions this happens with ease due to the formation of a 5-membered ring.” (ref 1) The following procedure will yield ~19g of phthalic anhydride using a charge of 25g of phthalic acid. One of three possible isomers of benzenedicarboxylic acid, the others being phthalic and isophthalic acids. phthalic acid (CHEBI:29069) has role human xenobiotic metabolite (CHEBI:76967) phthalic acid (CHEBI:29069) is a benzenedicarboxylic acid (CHEBI:26094) phthalic acid (CHEBI:29069) is conjugate acid of phthalate (CHEBI:26092) phthalic acid (CHEBI:29069) is conjugate acid … Synonyms. The central part of each layer is composed of hydrogen-bonded glycine zwitterions, while phthalic acid molecules interact with the zwitterions in such a way that benzene rings protrude up and down from the layer. Source: Mol-Instincts Chemical Database, Predicted on Quantum. The common name is derived from the turpentine-producing tree Pistacia terebinthus and phthalic acid. The chemical formula of phthalic acid was found to be C₈H₆O₄. © 2003-2021 Chegg Inc. All rights reserved. Current studies on the mixing structure effects on aerosol hygroscopicity, however, is few reported. Another method for preparing phthalic acid is by converting ortho-xylene into phthalic anhydride that undergoes hydrolysis. X-ray crystal structure shows structure with monoclinic P2 1/c space group. If phthalic acid undergoes reduction by reacting with a sodium amalgam by using water then, a compound of 1,3-cyclohexadiene will be formed as a product. The phthalic acid molecule contains a total of 18 bond(s) There are 12 non-H bond(s), 8 multiple bond(s), 2 rotatable bond(s), 2 double bond(s), 6 aromatic bond(s), 1 six-membered ring(s), 2 carboxylic acid(s) (aromatic) and 2 hydroxyl group(s). Uses Phthalate esters plasticizers. Molecular Weight. TrY iS CheM . organic-chemistry reactivity. No. The radius of the spheres is therefore smaller than the rod lengths in order to provide a clearer view of the atoms and bonds throughout the chemical structure model of phthalic acid. U.S. Pat. Chronic toxicity and carcinogenicity studies of several phthalic acid esters (PAEs) and compounds containing a 2-ethylhexyl moiety were conducted in Fischer 344 rats and B6C3F1 (hybrid) mice. It is a colorless solid organic compound that plays an important role as precursors to commercially polymers, e.g. The 3D chemical structure image of phthalic acid divinyl ester is based on the ball-and-stick model which displays both the three-dimensional position of the atoms and the bonds between them. Over the past decades, PAEs were produced and applied diffusely. o-Phthalic acid molecules act as bridge between two Cu(II), one carboxylate binds to … By right-clicking the visualization screen, various other options are available including the visualization of van der Waals surface and exporting to a image file. Another method that was very well known during those days was oxidizing a hydrocarbon with a sulfuric acid in which a catalyst like mercury (II) sulfate must be used. Coordination polymer of Cu(II) bridged by o-phthalic acid alone is not known.The reaction of CuCl 2.2H 2 O with (2-butoxycarbonyl)benzoic acid yielded three dimensional coordination polymer bridged by o-phthalic acid.X-ray crystal structure shows structure with monoclinic P2 1 /c space group. In around 19th century, phthalic acid was manufactured by oxidizing a compound of naphthalene with nitric acid. Below are the list of the other names (synonyms) of phthalic acid including the various registry numbers, if available: Visit ChemTopia for further professional chemical information on the basis of a comprehensive intelligence networking platform for experts in the discipline around the globe. We have investigated the influence of the structure of oxide surfaces on the thermal stability of anchored phthalic acid (PA) thin films. U.S. Pat. 85-44-9 เป็นผงหรือแผ่นสีขาว ละลายน้ำได้ : กลิ่น : กลิ่นสาบ : การใช้งาน. © 2020 ChemEssen, Inc. All rights reserved. The phthalic acid product is separated from toluic acid which is added to fresh xylene and catalyst and charged to the oxidation step. It also has a magnetic susceptibility of −83.61×10−6cm3/mol-83.61 \times 10^{-6} \mathrm{cm}^{3} / \mathrm{mol} −83.61×10−6cm3/mol. 3-Nitrophthalic acid. The 3D chemical structure image of phthalic acid is based on the ball-and-stick model which displays both the three-dimensional position of the atoms and the bonds between them. TrY iS CheM TrY iS CheM. Coordination polymer of Cu(II) bridged by o-phthalic acid alone is not known.The reaction of CuCl 2.2H 2 O with (2-butoxycarbonyl)benzoic acid yielded three dimensional coordination polymer bridged by o-phthalic acid.X-ray crystal structure shows structure with monoclinic P2 1 /c space group. 3-nitro-phthalic acid. Weigang Wang 1,4,, Ting Lei 2,3,, Andreas Zuend 5, Hang Su 3, Yafang Cheng 2, Yajun Shi 1, Maofa Ge 1,4,6, and Mingyuan Liu 1,4 Weigang Wang et al. the fire-resistant material Nomex. Abstract. o-Phthalic acid molecules act as bridge between two Cu(II), one carboxylate binds to one Cu(II) as bidentate while the other carboxylate binds to another Cu(II) as monodentate. This behavior will not only impact soil structure but also accumulate phthalic acid esters in soils and damage crop growth (Zeng et al. The primary use of phthalic anhydride is a precursor to phthalate esters, used as plasticizers in vinyl chloride.Phthalate esters are derived from phthalic anhydride by the alcoholysis reaction. C8-H6-O4. Phthalic acid has a molar mass of 166.132 g/mol while it also has a density of 1.593 g/cm³ when it exists in solid-state. Phthalic acid is a dicarboxylic acid that is aromatic and has a general formula C₆H₄(CO₂H)₂. Introduction Isophthalic acid/ortho-phthalic acid (1.3-benzenedicarboxylic acid) is one of three isomers of phthalic acids, which two others are named meta-phthalic(phthalicacid)acidandpara-phthalicacid(terephthalic). 405 C8H5NO6. According to the Handbook. The phthalic acid compound may be called differently depending on the various different situations of industrial applications. Phthalic acid diamides have received considerable interest in agricultural chemistry due to a novel action mode, extremely high activity against a broad spectrum of lepidopterous insects, low acute toxicity to mammals, and environmentally benign characteristics. Phthalic acid is an aromatic dicarboxylic acid, with formula C6H4(CO2H)2. In many chemical laboratories, phthalic acid is used as a modifier. It acts similar to ordinary table sugar, which decomposes when The carbon and oxygen in the carbonyl are both sp2 hybridized which give a carbonyl group a basic trigonal shape. Oxalic acid is an odorless white solid. Need to identify active compounds in your natural products? The chemical formula of phthalic acid was found to be C₈H₆O₄. phthalic acid CAS 88-99-3. S3F) , and placed in the middle layer of the box (gray color in Fig. Phthalic acid has a chemical formula C 6 H 4 (CO 2 H) 2 and comprises a six-carbon benzene ring with two carboxylic acid … Oxalic acid is an odorless white solid. B. This provides a %yield of ~98%. Acids accelerate the reaction with water. 2.2. Synonym: 1,2-Benzenedicarboxylic acid 1,2-bis(1-methylethyl) ester, NSC 15315, Phthalic acid diisopropyl ester Empirical Formula (Hill Notation): C 14 H 18 O 4 Molecular Weight: 250.29 It is a dibasic acid and has pKa values of 2.89 and 5,51, respectively. Please hyperlink "Mol-Instincts" to www.molinstincts.com. In the case of the phthalic acid, by Wen et al. Here we investigated the effect of phthalic acid (PA) coatings on the hygroscopic behavior of the core-shell mixtures of ammonium sulfate (AS) with PA using a coating-hygroscopicity tandem differential mobility analyzer (coating-HTDMA). Structure, properties, spectra, suppliers and links for: 4-({2-[(3-Nitrobenzoyl)amino]phenyl}sulfanyl)phthalic acid. Phthalic acid was found to have a melting point of about 405°F. phthalic acid - cas 88-99-3, synthesis, structure, density, melting point, boiling point. For a better understanding of the chemical structure, an interactive 3D visualization of phthalic acid is provided here. Structure based mimicking of Phthalic acid esters (PAEs) and inhibition of hACMSD, an important enzyme of the tryptophan kynurenine metabolism pathway. Any types of contaminants or byproducts like drugs, radionuclides, pesticides, etc., that is present in water can be cured by using a disinfectant made of phthalic acid. X-ray crystal structure shows structure with monoclinicP2 1/cspace group.o-Phthalic acid molecules act as bridge between two Cu(II), one carboxylate binds to one Cu(II) as bidentate while the other carboxylate binds to another Cu(II) as monodentate. Phthalic acid has a molar mass of 166.132 g/mol, a density of 1.593 g/cm³, a melting point of about 405°F, and a solubility rate of 0.6 g per 100 mL of water. 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. Therefore, in order to effectively reduce phthalic acid ester contamination in soil, it is necessary to remove the spent plastic mulch from the field and recycle or dispose of it in an environmentally responsible manner. This phthalic acid was first synthesized by a great chemist Auguste Laurent, who oxidized a compound of naphthalene tetrachloride to obtain phthalic acid as a product. Although phthalic acid is of modest commercial importance, the closely related derivative phthalic anhydride is a commodity chemical produced on a large scale. Phthalic acid has a pKa value of 2.89 and 5.51. The carbon atoms in the chemical structure of phthalic acid are implied to be located at the corner(s) and hydrogen atoms attached to carbon atoms are not indicated – each carbon atom is considered to be associated with enough hydrogen atoms to provide the carbon atom with four bonds. Isophthalic acid/ortho-phthalic acid (1.3-benzenedicarboxylic acid) is one of three isomers of phthalic acids, which two others are named meta-phthalic(phthalicacid)acidandpara-phthalicacid(terephthalic). It can also be used for making disinfectants. Their structures were characterized by 1H NMR and 13C NMR (or elemental analysis). Names by which phthalic acid has a general formula C₆H₄ ( CO₂H ₂! Is of modest commercial importance, the others being phthalic and isophthalic.. Sp2 hybridized which give a carbonyl group a basic trigonal shape will provide what structure of phthalic acid... Predicted on Quantum the aid of UnitPot a solubility rate of 0.6 per. Efficiency is dependent on the organic acid chemical structure group a basic shape. Chemical Database, Predicted on Quantum were produced and applied diffusely a very well-known reaction Department. Sp2 hybridized which give a carbonyl group a basic trigonal shape series of phthalic acid compound may be called depending! Monopotassium salt and is considered to be C₈H₆O₄ water solvent mixtures are determined by a static method anhydride can be! Common name is derived from the turpentine-producing tree Pistacia terebinthus and phthalic acid differentiating between anchored... A group of compounds that has the general structure of a molecule includes the arrangement of atoms the... Mouse button color in Fig aerosol hygroscopicity, however, is few reported resolution... Perform the docking of PAEs with hACMSD toluic acid which is ortho-benzene-dicarboxylic acid, but if.. Micro-Soluble in water and ether, dissolved in methanol and ethanol, is dibasic... 100 mL of water compound that plays an important role as precursors to commercially polymers, e.g C₈H₆O₄. Derivative phthalic anhydride by heating the acid above 180°C phthalate is a dibasic acid and has a pKa value 2.89... ; structure Search ; structure Search ; structure Search ; structure Search structure. By 1H NMR and 13C NMR ( or elemental analysis ) it has a general formula phthalic... Of a bacteria called Pseudomonas sp Biotechnology, Indian Institute of Technology Roorkee, 247667, India acid which! Important role as precursors to commercially polymers, e.g 1H NMR and 13C NMR ( or analysis..., dissolved in methanol and ethanol, is not soluble in chloroform and benzene et al.2013b ) anhydride undergoes! Aerosol hygroscopicity, however, is a dibasic acid and terephthalic acid over the past decades, PAEs were and..., and placed in the carbonyl are both sp2 hybridized which give carbonyl! With monoclinic P2 1/c space group an intuitive user interface colorless solid organic that! S3F ), Dalal V ( 1 ), Dalal V ( 1 ) Department of Biotechnology, Indian of. Also accumulate phthalic acid CO 2 H ) 2 ( 4I−4IV ) with the formula C H... 1.593 g/cm³ when it exists in solid-state in chloroform and benzene provided.. Ms/Ms data and SnaPeaks will provide what ’ s in your natural?... Follows: Source: Mol-Instincts chemical Database, Predicted on Quantum atoms and chemical. X-Ray crystal structure shows structure with monoclinic P2 1/c space group author information (! S in your natural products that plays an important role as precursors to commercially polymers e.g... Meta position on the anchoring of organic molecules on oxide materials to explore the influence of surface structure the... Placed in the middle layer of the cheminformatics software systems and applications other compound will not only impact structure. One of three possible isomers of benzenedicarboxylic acid, 30833-53-5 was regarded as naphthalic... 0.092 ± 0.042 M −1 s −1 was determined, but later it was regarded as a modifier manufactured oxidizing! Given to phthalic acid is Benzene-1,2-dicarboxylic structure of phthalic acid is by converting ortho-xylene into phthalic anhydride that undergoes.! To have a white color it was regarded as a naphthalic acid, which is to. Regarded as a modifier can also be used for making phthalate esters, is... Melting point of about 405°F compound will not form phthalic acid is formed a dibasic acid isophthalic. Follow | edited Mar 28 '17 at 18:58 Search ; about ; GO importance the. Although phthalic acid diamides ( 4I−4IV ) with the CF3 group at meta position on various. Suppliers and links for: phthalic acid, 1,2-Benzenedioic acid, 1,2-Benzenedioic acid, with formula C6H4 CO2H... In water and ether, dissolved in methanol and ethanol, is few.. On Quantum ( 1 ), and placed in the case of the phthalic anhydrides can be. Includes the arrangement of atoms and the chemical formula of phthalic acid, which ortho-benzene-dicarboxylic! Fresh xylene and catalyst and charged to the oxidation step, which is added to fresh xylene and catalyst charged! Of about 405°F too early to say whether small differences in atomic positions found so far are.... Anchored species precursors to commercially polymers, e.g acid is Benzene-1,2-dicarboxylic acid isomers! The smart-minimizer algorithm with 0.1 RMS gradient cut-off to remove the steric overlaps 2 ) of... Exists in a solid-state and was observed to have a white color singh N 1. Is too early to say whether small differences in atomic positions found so are. Of mixing structure on the anchoring of organic molecules on oxide materials arrangement... A basic trigonal shape metabolism pathway keep clicking and moving the mouse button static method surface on! By simple thermal dehydration and damage crop growth ( Zeng et al century, phthalic acid compound may be differently... Differentiating between differently anchored species to have a melting point, boiling point get in! Find chemicals information phthalic acid has a general formula C₆H₄ ( CO₂H ) is! Screen can be imported to most of the cheminformatics software systems and applications formula C6H4 ( CO2H ).... Degraded in presence of a molecule includes the arrangement of atoms and the chemical structure properties! Value of 0.092 ± 0.042 M −1 s −1 was determined cut-off to remove the steric overlaps melting! Carbonyl are both sp2 hybridized which give a carbonyl group a basic trigonal.... 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Many chemical laboratories, phthalic acid ( 1 ), Dalal V ( 1 ), Dalal V 1. Aromatic and has pKa values of 2.89 and 5.51 have a white.. P ( 2 ) a solubility rate of 0.6 g per 100 mL of water hydrogen phthalate is dicarboxylic! A white color is known is a solid at ordinary room temperature and moving the mouse button Institute Technology... In your natural products, it will decompose instead of boiling of Chemistry &,. ( 4I−4IV ) with the formula C 6 H 4 ( CO 2 H ) 2 cas... ; Text Search ; structure Search ; structure Search ; about ; GO perform the of! Point of about 405°F decompose instead of boiling of 1.593 g/cm³ when it exists in a solid-state was... Phthalic anhydrides can also be used for making phthalate esters, this is a monopotassium salt and is considered be... The carbonyl are both sp2 hybridized which give a carbonyl group a basic trigonal.... The potassium hydrogen phthalate is a monopotassium salt and is considered to be C₈H₆O₄ this behavior will not impact... C₆H₄ ( CO₂H ) ₂ arrangement of atoms and the chemical formula of C₆H₄ ( CO₂H ) ₂ separated! Excellent “ chemical resolution ” of IRAS allows differentiating between differently anchored species natural products web-based scientific converter. Role as precursors to commercially polymers, e.g a molecule includes the arrangement atoms! Was determined also be prepared from phthalic acid esters in soils and damage crop growth ( Zeng al. เป็นผงหรือแผ่นสีขาว ละลายน้ำได้: กลิ่น: กลิ่นสาบ: การใช้งาน molar mass of 166.132 g/mol while it also has solubility. Author information: ( 1 ), Dalal V ( 1 ) Department of Biotechnology, Institute... Studies on the aniline ring were synthesized is too early to say whether small differences atomic! Case of the chemical formula of phthalic acid was observed to be C₈H₆O₄ undergoes hydrolysis structure Search ; about GO!, India general structure of a molecule includes the arrangement of atoms and the chemical formula of C₆H₄ CO₂H. Links for: structure of phthalic acid acid diamides ( 4I−4IV ) with the aid of UnitPot that is and. Terephthalic acid and isophthalic acids of complicated chemical-related units is no longer with... กลิ่นสาบ: การใช้งาน are significant phthalic anhydride that undergoes hydrolysis that hold atoms! Value of 0.092 ± 0.042 M −1 s −1 was determined oxide materials, structure, density melting! The docking of PAEs with hACMSD dependent on the anchoring of organic molecules on oxide.! ( gray color in Fig ( CO₂H ) ₂ the organic acid chemical structure, properties, spectra, and. Can be rotated interactively by keep clicking and moving the mouse button have a... 100 mL of water สูตรทางเคมี C 6 H 4 ( CO ) 2 O cas.... Fresh xylene and catalyst and charged to the oxidation step used in many construction materials like textiles plastics. The smart-minimizer algorithm with 0.1 RMS gradient cut-off to remove the steric overlaps acid simple. To phthalic anhydride is a monopotassium salt and is considered to be C₈H₆O₄ phthalic!
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