c1ccc2c(c1)C(=O)OC2=O Extreme care must be taken, that the operating temperature of liquid condenser is above the triple point. Avoid breathing dust and vapors of phthalic anhydride. 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 … It is a cyclic dicarboxylic anhydride and a member of 2-benzofurans. Phthalic anhydride is a principal commercial form of phthalic acid. Phthalic anhydride is the organic compound with the formula C 6 H 4 (CO) 2 O. 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. 3-Nitrophthalic anhydride. TCC’s phthalic anhydride is a toxic, white crystalline compound used in the manufacture of phthaleins and other dyes, resins, plasticizers, and insecticides. Phthalic acid is however easily dehydrated to form phthalic anhydride above 180 °C, phthalic anhydride re-forms. Sci. Quantity Value Phthalic Anhydride (PA) is being produced by oxidation of Ortho-xylene. This colorless solid is an important industrial chemical, especially for the large–scale production of plasticizers for plastics. Now-a-days, modern plants have a liquid condenser, a pre-condenser to switch condenser. EINECS: 201-607-5. Phthalic anhydride is the cyclic dicarboxylic anhydride that is the anhydride of phthalic acid. It is the anhydride of phthalic acid. 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. Storage. As with other anhydrides, the alcoholysis reaction is the basis of the manufacture of phthalate esters, which are widely used (and controversial - see endocrine disruptor) plasticizers. Phthalate esters, which function as plasticizers, are derived from Phthalic Anhydride. John Wiley & Sons, Inc. 2005]. Phthalic anhydride would exceptionally of plasticiziers for plastics but also for colours, synthetic resin and on wood as surface coating inserted. It is an isomer of isophthalic acid and terephthalic acid. {{#invoke:citation/CS1|citation Name of a product: Phthalic Anhydride (A technical grade). It was the first anhydride of a dicarboxylic acid to be used commercially. Coughing, choking, burning sensation in the nose and throat, as well as headache and dizziness can occur. 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 is the anhydride of phthalic acid. : 85-44-9. Similarly, varying phthalic anhydride/ethylenediamine ratios had no significant White lustrous needles or flakes, free flowing, and free from dirt and other impurities. Phthalic anhydride (A technical grade) is manufactured from ortho … • Catalyst packed bed reactor • Distillation column The primary use of phthalic anhydride is as a chemical intermediate in the production of plastics from vinyl chloride. Formula: C8h4o3. 641-70-3. Phthalic anhydride is a skin irritant. |CitationClass=book PHTHALIC ANHYDRIDE ( EX GERMISTON ) Chemical name 1,3 - isobenzofurandione. }}, {{#invoke:Citation/CS1|citation 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. Phthalic anhydride. About 10% of maleic anhydride is also produced: The reaction is catalyzed by a vanadium pentoxide (V2O5) between 320 - 400 °C. CAS Number: 2421-28-5 [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. Empirical formula: С 8 H 4 O 3. GOST 7119-77. 1,3-Isobenzofurandione, 4-nitro-. 2. 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. EINECS-number: 201-607-5. Synonyms. 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. There are 12 phthalic anhydride suppliers, mainly located in Asia. ; 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). 1,2-Benzenedicarboxylic anhydride, PAN, Phthalic acid anhydride White solid (flake) or a clear, colorless, mobile liquid (molten) with a characteristic, acrid odor. CAS-number: 85-44-9 Properties. It was the first anhydride of a dicarboxylic acid to be used commercially. Suppliers with verified business licenses. Predicted data is generated using the US Environmental Protection Agency’s EPISuite™. Name of a product: Phthalic Anhydride (A technical grade). 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. It has a role as an allergen. It is slightly soluble in hot water, hydrolysing to PA, and is soluble in alcohol and carbon disulphide. ; Durant, J.L. [5], Phthalic anhydride is widely used in industry for the production of certain dyes. Disposal. "Phthalic Acids and Other Benzenepolycarboxylic Acids" Kirk-Othmer Encyclopedia of Chemical Technology. (6,8) Phthalic anhydride has an odor threshold of 0.053 parts per million (ppm). • Switch Condensers 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… A wide variety of phthalic anhydride options are available to you, such as syntheses material intermediates, dyestuff intermediates. Phthalic anhydride has also been used as a rubber scorch inhibitor and retarder. White solid (flake) or a clear, colorless, mobile liquid (molten) with a characteristic, acrid odor. }}, https://en.formulasearchengine.com/index.php?title=Phthalic_anhydride&oldid=228855. Synonyms: anhydride phthalic acid, 1,2-benzenedicarboxylic anhydride, isobenzofuran-1,3-dione. This colourless solid is an important industrial chemical, especially for the large-scale production of plasticizers for plastics. |CitationClass=journal Chemical formula: C8H4O3. Hydrolysis by hot water forms ortho-phthalic acid. 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. Phthalic anhydride and maleic anhydride are commonly used in paints, varnishes and various plastic coatings. 85-44-9 EINECS-No. phthalic anhydride/ethylenediamine molar ratio of 1:1 gave the highest yield of product I. Articles of Phthalic anhydride are included as well. Synonym: 4,4′-Carbonyldiphthalic anhydride Empirical Formula (Hill Notation): C 17 H 6 O 7. Technol., 39(24), 2005, 9547-9560. ass: Semi-standard non-polar; Column diameter: 0.25 mm; Column length: 30 m; Column type: Capillary; Heat rate: 5 K/min; Start T: 50 C; End T: 280 C; End time: 10 min; Start time: 0.5 min; CAS no: 85449; Active phase: HP-5; Carrier gas: He; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: Guillen, M.D. It reacts with strong oxidants and violently on heating with copper oxide or sodium nitrite, causing explosion hazard. Chemical name (on IUPAC): 1,3-Dihydro-2-benzofuran-1,3-dione. Large scale industrial production of maleic anhydride is achieved by unification of following unit processes: C8H3NO5. Synonym: 4,4′-Carbonyldiphthalic anhydride Empirical Formula (Hill Notation): C 17 H 6 O 7. Phthalic anhydride (PA) occurs as white solid in various forms or clear molten liquid, with an irritating odour. More contemporary routes include catalytic oxidation of ortho-xylene and naphthalene ("Gibbs phthalic anhydride process"), although use of naphthalene has declined. Appearance: Powder. Phthalic anhydride can also be prepared from phthalic acid:[1] 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. 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… 4-nitroisobenzofuran-1,3-dione. CopyCopied, InChI=1S/C8H4O3/c9-7-5-3-1-2-4-6(5)8(10)11-7/h1-4H Molecular Formula. Chemical formula C6H4(CO)2O. Benzene • November 2020 • 418,- €/t (+65) Para-Xylene (PX) • November 2020 • 510,- €/t (-5) Ortho-Xylene (OX) • November 2020 • 550,- €/t (-10) Exposure to phthalic anhydride may occur during its use as a chemical intermediate in the plastics industry. It is a organic compound and a important chemical raw material. ; Cass, G.R., Human cell mutagenes in respirable airborne particles from the Northeastern United States. Phthalic anhydride is the organic compound with the formula C6H4(CO)2O. IUPAC … 4-Nitro-2-benzofuran-1,3-dione. It was the first anhydride of a dicarboxylic acid to be used commercially. Although phthalic acid is of modest commercial importance, the closely related derivative phthalic anhydride is a commodity chemical produced on a large scale. The most probable human exposure to phthalic anhydride is through skin contact or inhalation during manufacture or use. Phthalic anhydride reacts violently with CuO at elevated temperatures [Park, Chang-Man, Richard J. Sheehan. Isophthalic acid and trimellitic anhydride are made from m ‐xylene and pseudocumene respectively using the same process. Phthalic anhydride. So, increasing the pressure of reaction would favor more efficient separation in switch condensers. CAS-number: 85-44-9. Air concentrations of 25 mg/m3 (4 ppm) produced signs of mucous membrane irritation. Molecular Weight: 322.23. 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. Starting from o-xylene, the oxidation follows the following stoichiometry: The reaction proceeds with about 70% selectivity. Phthalic anhydride and maleic anhydride are recovered by distillation. From Wikipedia, the free encyclopedia Phthalic acid is an aromatic dicarboxylic acid, with formula C 6 H 4 (CO 2 H) 2. 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Organic compounds., Environ separation in switch condensers '' chemical formula for phthalic anhydride suppliers, mainly in...