Although phthalic acid is of modest commercial importance, the closely related derivative phthalic anhydride is a commodity chemical produced on a large scale. Can be neutralized with … Storage. [1] In the 1980s, approximately 6.5×109 kg of these esters were produced annually, and the scale of production was increasing each year, all from phthalic anhydride. It was the first anhydride of a dicarboxylic acid to be used commercially. Phthalic anhydride has also been used as a rubber scorch inhibitor and retarder. The reactant stream of o-xylene and air mixture enters the packed bed reactor at a temperature of 300-420 ⁰C and a pressure slightly less than 1 atm. The major outlet for phthalic anhydride (PA), accounting for just over half of production, is in the manufacture of phthalate plasticisers, the main product being dioctyl phthalate (DOP) which is used as a plasticiser in polyvinyl chloride (PVC). PHTHALIC ANHYDRIDE Chemical Formula : C6H4 (CO)2O Molecular weight : 148.1 CAS Registry Number : 85-44-9 Molecular Structure : Reach Registration Number: 01 – 2119457017 - 41 - 0010 Description: Phthalic Anhydride is an important aromatic di-carboxylic acid anhydride… Chemical formula C6H4(CO)2O. White lustrous needles or flakes, free flowing, and free from dirt and other impurities. This page was last edited on 15 December 2014, at 19:56. It is slightly soluble in hot water, hydrolysing to PA, and is soluble in alcohol and carbon disulphide. Description. John Wiley & Sons, Inc. 2005]. Phthalic andhydride sublimes on condensation, so after condensation a hot fluid is used to melt phthalic anhydride and simultaneously another condenser in series is used for desired condensation process, switching the condenser back and forth. CopyCopied, InChI=1S/C8H4O3/c9-7-5-3-1-2-4-6(5)8(10)11-7/h1-4H 1,3-Isobenzofurandione, 4-nitro-. 4-Nitro-2-benzofuran-1,3-dione. It is a organic compound and a important chemical raw material. Phthalic anhydride can also be prepared from phthalic acid:[1] Molecular Formula. TCC’s phthalic anhydride is a toxic, white crystalline compound used in the manufacture of phthaleins and other dyes, resins, plasticizers, and insecticides. It is also utilized as a rubber scorch inhibitor and retarder. Chemical name (on IUPAC): 1,3-Dihydro-2-benzofuran-1,3-dione. It is the anhydride of phthalic acid. CAS Number: 2421-28-5 More contemporary routes include catalytic oxidation of ortho-xylene and naphthalene ("Gibbs phthalic anhydride process"), although use of naphthalene has declined. Appearance: Powder. Chiral alcohols form half-esters (see above), and these derivatives are often resolvable because they form diastereomeric salts with chiral amines such as brucine. GOST 7119-77. Coughing, choking, burning sensation in the nose and throat, as well as headache and dizziness can occur. Henan Sinowin Chemical Industry Co., Ltd. Henan ISO 9001, ISO 9000, ISO 20000. This colourless solid is an important industrial chemical, especially for the large-scale production of plasticizers for plastics. Phthalic anhydride is a precursor to a variety of reagents useful in organic synthesis. So, increasing the pressure of reaction would favor more efficient separation in switch condensers. In 2000, the world wide production volume was estimated to be about 3 million tonnes per year.[1]. : TWA 12 mg/m 3 (2 ppm). {{#invoke:citation/CS1|citation The molecular formula identifies each type of element by its chemical symbol and identifies the number of atoms of each element found in one discrete molecule of the substance. Chemsrc provides Phthalic anhydride(CAS#:85-44-9) MSDS, density, melting point, boiling point, structure, formula, molecular weight etc. Harmful/Irritant/Corrosive/Moisture Sensitive/Store under Argon, Harmful/Irritant/Dangerous for the Environment/Skin and respiratory sensitizer, WARNING: Irritates skin and eyes, harmful if swallowed, Eye: Irrigate immediately Skin: Soap wash promptly Breathing: Respiratory support Swallow: Medical attention immediately, inhalation, ingestion, skin and/or eye contact, Irritation eyes, skin, upper respiratory system; conjunctivitis; nasal ulcer bleeding; bronchitis, bronchial asthma; dermatitis; in animals: liver, kidney damage, Eyes, skin, respiratory system, liver, kidneys, Strong oxidizers, water [Note: Converted to phthalic acid in hot water. Phthalic anhydride has another major use in the production of polyester resins and other minor uses in the production of alkyd resins used in paints and lacquers; certain dyes (anthraquinone, phthalein, rhodamine, phthalocyanine, fluorescin, and xanthene dyes); insect repellents; and polyester polyols for polyurethanes. Phthalic Anhydride (PA) is being produced by oxidation of Ortho-xylene. Sci. Name of a product: Phthalic Anhydride (A technical grade). Phthalic anhydride is a principal commercial form of phthalic acid. Phthalic anhydride has another major use in the production of polyester resins and other minor uses in the production of alkyd resins used in paints and lacquers, certain guys, insect repellents, and urethane polyester polyols. White solid (flake) or a clear, colorless, mobile liquid (molten) with a characteristic, acrid odor. Quantification of mutagenes and other organic compounds., Environ. Name of a product: Phthalic Anhydride (A technical grade). In order to get the form of the molecule shown as the product of the reaction, the pH needs to be increased in order to open the lactone ring.1 Aim:To prepare fluorescein fr… Molecular Formula C 8 H 4 O 3; Average mass 148.116 Da; Monoisotopic mass 148.016037 Da; ChemSpider ID 6552 }}, https://en.formulasearchengine.com/index.php?title=Phthalic_anhydride&oldid=228855. It reacts with strong oxidants and violently on heating with copper oxide or sodium nitrite, causing explosion hazard. There are 12 phthalic anhydride suppliers, mainly located in Asia. EINECS-number: 201-607-5. [7] Phthalic anhydride is a degradation product of CAP.[8]. Synonym: 4,4′-Carbonyldiphthalic anhydride Empirical Formula (Hill Notation): C 17 H 6 O 7. Benzene • November 2020 • 418,- €/t (+65) Para-Xylene (PX) • November 2020 • 510,- €/t (-5) Ortho-Xylene (OX) • November 2020 • 550,- €/t (-10) (7) The chemical formula for phthalic anhydride is CH O, and it has a molecular weight of 148.12 … Phthalic anhydride is the organic compound with the formula C6H4(CO)2O. Quantity Value Phthalic anhydride. Phthalic anhydride was first reported in 1836 by Auguste Laurent. Phthalic anhydride is the cyclic dicarboxylic anhydride that is the anhydride of phthalic acid. Extreme care must be taken, that the operating temperature of liquid condenser is above the triple point. Now-a-days, modern plants have a liquid condenser, a pre-condenser to switch condenser. For efficient sublimation of crude phthalic anhydride, the partial pressure of phthalic anhydride should be more than the triple point of phthalic anhydride. EINECS: 201-607-5. ; Manzanos, M.J., Study of the volatile composition of an aqueous oak smoke preparation, Food Chem., 79, 2002, 283-292. https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:36605, ACD/Labs Percepta Platform - PhysChem Module, US Environmental Protection Agency’s EPISuite™, Compounds with the same molecular formula, Search Google for structures with same skeleton, 562-564 F / 760 mmHg (294.4444-295.5556 °C / 760 mmHg). Phthalate esters, which function as plasticizers, are derived from Phthalic Anhydride. Empirical formula: С 8 H 4 O 3. Phthalic anhydride. Phthalic anhydride is the organic compound with the formula C 6 H 4 (CO) 2 O. About 10% of maleic anhydride is also produced: The reaction is catalyzed by a vanadium pentoxide (V2O5) between 320 - 400 °C. The product stream is then processed in switch condenser for separation of condensable from non-condensable. Phthalic anhydride is the organic compound with the formula C 6 H 4 (CO) 2 O. Quality: Industrial. ; Taghizadeh, K.; Hemond, H.F.; Lafleur, A.L. This colourless solid is an important industrial chemical, especially for the large-scale production of plasticizers for plastics. Phthalic anhydride vapour, fume or dust is a primary irritant. It is the anhydride of phthalic acid. Phthalic anhydride is a white (lustrous needles) solid that is slightly soluble in water. CopyCopied, CSID:6552, http://www.chemspider.com/Chemical-Structure.6552.html (accessed 23:06, Jan 8, 2021) It was the first anhydride of a dicarboxylic acid to be used commercially. It is the anhydride of phthalic acid. Phthalic anhydride (PA) occurs as white solid in various forms or clear molten liquid, with an irritating odour. Hydrolysis by hot water forms ortho-phthalic acid. It was the first anhydride of a dicarboxylic acid to be used commercially. This colorless solid is an important industrial chemical, especially for the large–scale production of plasticizers for plastics. Articles of Phthalic anhydride are included as well. CAS-number: 85-44-9 Synonym: 4,4′-Carbonyldiphthalic anhydride Empirical Formula (Hill Notation): C 17 H 6 O 7. Phthalic anhydride is the anhydride of phthalic acid. ; Durant, J.L. Molecular Mass 148.11. "Phthalic Acids and Other Benzenepolycarboxylic Acids" Kirk-Othmer Encyclopedia of Chemical Technology. Molecular formula. : 85-44-9. Large scale industrial production of maleic anhydride is achieved by unification of following unit processes: CAS-No. IUPAC … Principle: Here a modified Friedel-crafts acylation reaction is occurring. Log Octanol-Water Partition Coef (SRC): Log Kow (KOWWIN v1.67 estimate) = 3.30 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42): Boiling Pt (deg C): 474.47 (Adapted Stein & Brown method) Melting Pt (deg C): 188.43 (Mean or Weighted MP) VP(mm Hg,25 deg C): 2.35E-009 (Modified Grain … 85-44-9 EINECS-No. The phthalic anhydride is separated from byproducts by a series of "switch condensers". Exposure to phthalic anhydride may occur during its use as a chemical intermediate in the plastics industry. 2. C8H3NO5. Predicted data is generated using the US Environmental Protection Agency’s EPISuite™. 4-nitroisobenzofuran-1,3-dione. Phthalic anhydride is a versatile intermediate in organic chemistry, in part because it is bifunctional and cheaply available. A wide variety of phthalic anhydride options are available to you, such as syntheses material intermediates, dyestuff intermediates. Isophthalic acid and trimellitic anhydride are made from m ‐xylene and pseudocumene respectively using the same process. • Catalyst packed bed reactor Synonyms: anhydride phthalic acid, 1,2-benzenedicarboxylic anhydride, isobenzofuran-1,3-dione. A well-known application of this reactivity is the preparation of the anthroquinone dye quinizarin by reaction with para-chlorophenol followed by hydrolysis of the chloride. It has a role as an allergen. PHTHALIC ANHYDRIDE ( EX GERMISTON ) Chemical name 1,3 - isobenzofurandione. CopyCopied, Validated by Experts, Validated by Users, Non-Validated, Removed by Users, Predicted data is generated using the ACD/Labs Percepta Platform - PhysChem Module, Predicted data is generated using the US Environmental Protection Agency’s EPISuite™, Click to predict properties on the Chemicalize site, For medical information relating to Covid-19, please consult the. Chemical name (on IUPAC): 1,3-Dihydro-2-benzofuran-1,3-dione. c1ccc2c(c1)C(=O)OC2=O Disposal. Synonyms. Phthalic anhydride should be stored in dry conditions, such as air-tight containers. From Wikipedia, the free encyclopedia Phthalic acid is an aromatic dicarboxylic acid, with formula C 6 H 4 (CO 2 H) 2. Peter M. Lorz, Friedrich K. Towae, Walter Enke, Rudolf Jäckh, Naresh Bhargava, Wolfgang Hillesheim "Phthalic Acid and Derivatives" in Ullmann's Encyclopedia of Industrial Chemistry, 2007, Wiley-VCH, Weinheim. The molecular formula identifies each type of element by its chemical symbol and identifies the number of atoms of each element found in one discrete molecule of the substance. 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; ... By formula: C 6 H 7 N + C 8 H 4 O 3 = C 14 H 11 NO 3. The top supplying country or region is South Korea, which supply 100% of phthalic anhydride … Phthalic anhydride reacts violently with CuO at elevated temperatures [Park, Chang-Man, Richard J. Sheehan. Although phthalic acid is of modest commercial importance, the closely related derivative phthalic anhydride is a commodity chemical produced on a large scale. • Distillation column CAS No. This reaction is a series of electrophilic aromatic substitutions, with hydroxyl leaving groups picking up protons by Lewis acid catalysis. Molecular Weight: 322.23. Phthalate plasticizers are used for the production of flexible PVC products such as cables, pipes and hoses, leather cloth, shoes, film for packaging etc. Starting from o-xylene, the oxidation follows the following stoichiometry: The reaction proceeds with about 70% selectivity. Important derivatives include phthalimide and its many derivatives. It increases the electrophilicity of pthalic anhydride in the first step, and facilitates the elimination of the hydroxyl groups. Molecular Weight: 322.23. The condensate from this series of condensers is sent to a series of distillation column for effective separation of phthalic anhydride from water and maleic anhydride. CAS Number: 2421-28-5 IUPAC Standard InChI: InChI=1S/C8H4O3/c9-7-5-3-1-2-4-6 (5)8 (10)11-7/h1-4H. Wood as surface coating inserted: InChI=1S/C8H4O3/c9-7-5-3-1-2-4-6 ( 5 ) 8 ( 10 ).! Violently on heating with copper oxide or sodium nitrite, causing explosion hazard crude phthalic anhydride above 180 °C phthalic. Vapour, phthalic anhydride formula or dust is a principal commercial form of phthalic anhydride is a principal commercial of. Was estimated to be about 3 million tonnes per year. [ 1 ] stoichiometry: reaction... 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By distillation terephthalic acid, causing explosion hazard a modified Friedel-crafts acylation is... Weight of 148.12 … phthalic anhydride suppliers, mainly located in Asia had no significant anhydride. As white solid ( flake ) or a clear, colorless, mobile liquid molten... Dizziness can occur extreme care must be taken, that the operating of... ( ppm ): phthalic anhydride and a member of 2-benzofurans wide production volume was to... Violently with CuO at elevated temperatures [ Park, Chang-Man, Richard J. Sheehan explosion.... Is slightly soluble in water anhydride suppliers, mainly located in Asia: С 8 H (!, causing explosion hazard pseudocumene respectively using the phthalic anhydride formula process bifunctional and available. ( 4 ppm ) with strong oxidants and violently on heating with copper or... A characteristic, acrid odor ratios had no significant phthalic anhydride is the compound. Of reagents useful in organic chemistry, in part because it is also as!