: TWA 12 mg/m 3 (2 ppm). It is the anhydride of phthalic acid. So, increasing the pressure of reaction would favor more efficient separation in switch condensers. Exposure to phthalic anhydride may occur during its use as a chemical intermediate in the plastics industry. [2] Hydrolysis of anhydrides is not typically a reversible process. 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. Although phthalic acid is of modest commercial importance, the closely related derivative phthalic anhydride is a commodity chemical produced on a large scale. A wide variety of phthalic anhydride options are available to you, such as syntheses material intermediates, dyestuff intermediates. Quantification of mutagenes and other organic compounds., Environ. Phthalic anhydride and maleic anhydride are commonly used in paints, varnishes and various plastic coatings. Molecular Weight: 322.23. • Distillation column Phthalic anhydride is made primarily by gas‐phase oxidation of o ‐xylene over a fixed catalyst containing vanadium and titanium oxides. Phthalate esters, which function as plasticizers, are derived from Phthalic Anhydride. CAS No. Henan Sinowin Chemical Industry Co., Ltd. Henan ISO 9001, ISO 9000, ISO 20000. 85-44-9 EINECS-No. 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. : 85-44-9. Molecular Formula. "Phthalic Acids and Other Benzenepolycarboxylic Acids" Kirk-Othmer Encyclopedia of Chemical Technology. 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. CopyCopied, InChI=1S/C8H4O3/c9-7-5-3-1-2-4-6(5)8(10)11-7/h1-4H
Phthalic anhydride vapour, fume or dust is a primary irritant. [7] Phthalic anhydride is a degradation product of CAP.[8]. 4-Nitro-2-benzofuran-1,3-dione. 1,3-Isobenzofurandione, 4-nitro-. Phthalic Anhydride (PA) is being produced by oxidation of Ortho-xylene. This page was last edited on 15 December 2014, at 19:56. Download the identifier in a file. Phthalic anhydride should be stored in dry conditions, such as air-tight containers. Coughing, choking, burning sensation in the nose and throat, as well as headache and dizziness can occur. Phthalic anhydride is the organic compound with the formula C6H4(CO)2O. Phthalic anhydride has also been used as a rubber scorch inhibitor and retarder. Molecular Formula C 8 H 4 O 3; Average mass 148.116 Da; Monoisotopic mass 148.016037 Da; ChemSpider ID 6552 [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. Quantity Value The product stream is then processed in switch condenser for separation of condensable from non-condensable. Can be neutralized with … The most probable human exposure to phthalic anhydride is through skin contact or inhalation during manufacture or use. 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). It was the first anhydride of a dicarboxylic acid to be used commercially. This colourless solid is an important industrial chemical, especially for the large-scale production of plasticizers for plastics. It is the anhydride of phthalic acid. Description. c1ccc2c(c1)C(=O)OC2=O
CAS Number: 2421-28-5 Phthalic anhydride is a principal commercial form of phthalic acid. CAS Number: 2421-28-5 Molecular formula. It is a organic compound and a important chemical raw material. Chiral alcohols form half-esters (see above), and these derivatives are often resolvable because they form diastereomeric salts with chiral amines such as brucine. Now-a-days, modern plants have a liquid condenser, a pre-condenser to switch condenser. Phthalic anhydride. Chemical name (on IUPAC): 1,3-Dihydro-2-benzofuran-1,3-dione. 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. Phthalic anhydride is a principal commercial form of phthalic acid. Phthalic anhydride is a skin irritant. Benzene • November 2020 • 418,- €/t (+65) Para-Xylene (PX) • November 2020 • 510,- €/t (-5) Ortho-Xylene (OX) • November 2020 • 550,- €/t (-10) Synonym: 4,4′-Carbonyldiphthalic anhydride Empirical Formula (Hill Notation): C 17 H 6 O 7. Principle: Here a modified Friedel-crafts acylation reaction is occurring.
Studies show that exposure to phthalic anhydride can cause rhinitis, chronic bronchitis, and asthma. More contemporary routes include catalytic oxidation of ortho-xylene and naphthalene ("Gibbs phthalic anhydride process"), although use of naphthalene has declined. 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. White solid (flake) or a clear, colorless, mobile liquid (molten) with a characteristic, acrid odor. ; Durant, J.L. This colorless solid is an important industrial chemical, especially for the large–scale production of plasticizers for plastics. 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. It is the anhydride of phthalic acid. ass: Semi-standard non-polar; Column diameter: 0.25 mm; Column length: 30 m; Column type: Capillary; Heat rate: 6 K/min; Start T: 50 C; End T: 310 C; End time: 10 min; Start time: 1.5 min; CAS no: 85449; Active phase: HP-5; Carrier gas: Helium; Phase thickness: 0.25 um; Data type: Lee RI; Authors: Pedersen, D.U. 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, CSID:6552, http://www.chemspider.com/Chemical-Structure.6552.html (accessed 23:06, Jan 8, 2021)
; Taghizadeh, K.; Hemond, H.F.; Lafleur, A.L. Large scale industrial production of maleic anhydride is achieved by unification of following unit processes: There are 12 phthalic anhydride suppliers, mainly located in Asia. TCC’s phthalic anhydride is a toxic, white crystalline compound used in the manufacture of phthaleins and other dyes, resins, plasticizers, and insecticides. EINECS-number: 201-607-5. Properties. Formula: C8h4o3. Articles of Phthalic anhydride are included as well. Predicted data is generated using the US Environmental Protection Agency’s EPISuite™. Formula: C 8 H 4 O 3. 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. 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. It was the first anhydride of a dicarboxylic acid to be used commercially. Empirical formula: С 8 H 4 O 3. Disposal. GOST 7119-77. 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… Hydrolysis by hot water forms ortho-phthalic acid. Chemical formula: C8H4O3. About 10% of maleic anhydride is also produced: The reaction is catalyzed by a vanadium pentoxide (V2O5) between 320 - 400 °C. Phthalates are endocrine disruptors. Synonym: 4,4′-Carbonyldiphthalic anhydride Empirical Formula (Hill Notation): C 17 H 6 O 7. Phthalic anhydride (A technical grade) is manufactured from ortho … Appearance: Powder. Extreme care must be taken, that the operating temperature of liquid condenser is above the triple point. For efficient sublimation of crude phthalic anhydride, the partial pressure of phthalic anhydride should be more than the triple point of phthalic anhydride. Purity % m/m Phthalic Anhydride 99,5 (Min) From Wikipedia, the free encyclopedia Phthalic acid is an aromatic dicarboxylic acid, with formula C 6 H 4 (CO 2 H) 2. Similarly, varying phthalic anhydride/ethylenediamine ratios had no significant Avoid breathing dust and vapors of phthalic anhydride. Name of a product: Phthalic Anhydride (A technical grade). Name of a product: Phthalic Anhydride (A technical grade). PHTHALIC ANHYDRIDE ( EX GERMISTON ) Chemical name 1,3 - isobenzofurandione. CAS-number: 85-44-9 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 was the first anhydride of a dicarboxylic acid to be used commercially. Molecular weight: 148.1156. |CitationClass=book IUPAC Standard InChI: InChI=1S/C8H4O3/c9-7-5-3-1-2-4-6 (5)8 (10)11-7/h1-4H. Phthalic anhydride and maleic anhydride are recovered by distillation. Suppliers with verified business licenses. Synonyms. Phthalic anhydride is a versatile intermediate in organic chemistry, in part because it is bifunctional and cheaply available. It is an isomer of isophthalic acid and terephthalic acid. 3-Nitrophthalic anhydride. {{#invoke:citation/CS1|citation 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 … Phthalic anhydride is a white (lustrous needles) solid that is slightly soluble in water. phthalic anhydride/ethylenediamine molar ratio of 1:1 gave the highest yield of product I. (7) The chemical formula for phthalic anhydride is CH O, and it has a molecular weight of 148.12 … [6], Phthalic anhydride treated with cellulose acetate gives cellulose acetate phthalate (CAP), a common enteric coating excipient that has also been shown to have antiviral activity. Phthalic anhydride is the organic compound with the formula C 6 H 4 (CO) 2 O. It is a cyclic dicarboxylic anhydride and a member of 2-benzofurans. Phthalic anhydride was first reported in 1836 by Auguste Laurent. The process begins with the reaction of phthalic anhydride with alcohols, giving the monoesters: The second esterification is more difficult and requires removal of water: The most important diester is bis(2-ethylhexyl) phthalate ("DEHP"), used in the manufacture of polyvinyl chloride. It is slightly soluble in hot water, hydrolysing to PA, and is soluble in alcohol and carbon disulphide. ], Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated Remove: When wet or contaminated Change: Daily, NIOSH REL : TWA 6 mg/m 3 (1 ppm) OSHA PEL ? Storage. Phthalic anhydride is a precursor to a variety of reagents useful in organic synthesis. }}, {{#invoke:Citation/CS1|citation 4-nitroisobenzofuran-1,3-dione. 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. The phthalic anhydride is separated from byproducts by a series of "switch condensers". Phthalic acid is however easily dehydrated to form phthalic anhydride above 180 °C, phthalic anhydride re-forms. 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 Weight: 322.23. This colourless solid is an important industrial chemical, especially for the large-scale production of plasticizers for plastics. It is the anhydride of phthalic acid. It increases the electrophilicity of pthalic anhydride in the first step, and facilitates the elimination of the hydroxyl groups. Phthalic anhydride would exceptionally of plasticiziers for plastics but also for colours, synthetic resin and on wood as surface coating inserted. John Wiley & Sons, Inc. 2005]. • Catalyst packed bed reactor Molecular Mass 148.11. Phthalic anhydride. Although phthalic acid is of modest commercial importance, the closely related derivative phthalic anhydride is a commodity chemical produced on a large scale. Synonyms: anhydride phthalic acid, 1,2-benzenedicarboxylic anhydride, isobenzofuran-1,3-dione. It reacts with strong oxidants and violently on heating with copper oxide or sodium nitrite, causing explosion hazard. Starting from o-xylene, the oxidation follows the following stoichiometry: The reaction proceeds with about 70% selectivity. This reaction is a series of electrophilic aromatic substitutions, with hydroxyl leaving groups picking up protons by Lewis acid catalysis. Chemical name (on IUPAC): 1,3-Dihydro-2-benzofuran-1,3-dione. Phthalic anhydride is the organic compound with the formula C6H4(CO)2O. The cyclic dicarboxylic anhydride that is the anhydride of phthalic acid. 641-70-3. C8H3NO5. 2. (6,8) Phthalic anhydride has an odor threshold of 0.053 parts per million (ppm). Sci. In non-aqueous media product II was obtained with notably lo wer yields (betw een 25.5 and 36.4 %), even a t higher temper atur es and longer reaction times. Appearance. Chemical formula C6H4(CO)2O. The primary use of phthalic anhydride is as a chemical intermediate in the production of plastics from vinyl chloride. [5], Phthalic anhydride is widely used in industry for the production of certain dyes. }}, https://en.formulasearchengine.com/index.php?title=Phthalic_anhydride&oldid=228855. 1,2-Benzenedicarboxylic anhydride, PAN, Phthalic acid anhydride White solid (flake) or a clear, colorless, mobile liquid (molten) with a characteristic, acrid odor. Phthalic anhydride is a principal commercial form of phthalic acid. CopyCopied, LGRFSURHDFAFJT-UHFFFAOYSA-N
Phthalic anhydride is the anhydride of phthalic acid. ; Cass, G.R., Human cell mutagenes in respirable airborne particles from the Northeastern United States. 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. IUPAC … In 2000, the world wide production volume was estimated to be about 3 million tonnes per year.[1]. [3] A related ring-opening reaction involves peroxides to give the useful peroxy acid:[4], Phthalic anhydride is used to dehydrate short-chain nitro-alcohols to yield nitroalkenes, compounds with a high tendency to polymerize. If such information is available in ECHA’s database and is it not claimed confidential, the molecular formula and molecular structure will be displayed here. It has a role as an allergen. CAS-No. Phthalic anhydride reaction on human health is generally an asthma-rhinitis-conjunctivitis syndrome or a delayed reaction and influenza-like symptoms and with increased Immunoglobulin (Immunoglobulin E, Immunoglobulin G ) levels in the blood. Phthalic anhydride (PA) occurs as white solid in various forms or clear molten liquid, with an irritating odour. Quality: Industrial. White lustrous needles or flakes, free flowing, and free from dirt and other impurities. Acid anhydrides are also used as plasticizers for PVC and other plastics, especially where temperature stability is required, as for example in coatings for wires and cables. Air concentrations of 25 mg/m3 (4 ppm) produced signs of mucous membrane irritation. EINECS: 201-607-5. Chemsrc provides Phthalic anhydride(CAS#:85-44-9) MSDS, density, melting point, boiling point, structure, formula, molecular weight etc. |CitationClass=journal 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. Phthalate plasticizers are used for the production of flexible PVC products such as cables, pipes and hoses, leather cloth, shoes, film for packaging etc. It is also utilized as a rubber scorch inhibitor and retarder. • Switch Condensers Isophthalic acid and trimellitic anhydride are made from m ‐xylene and pseudocumene respectively using the same process. The top supplying country or region is South Korea, which supply 100% of phthalic anhydride … Important derivatives include phthalimide and its many derivatives. Phthalic anhydride reacts violently with CuO at elevated temperatures [Park, Chang-Man, Richard J. Sheehan. ; 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). On heating with copper oxide or sodium nitrite, phthalic anhydride formula explosion hazard Here a modified Friedel-crafts acylation is! Was first reported in 1836 by Auguste Laurent Notation ): C 17 H 6 7. Are available to you, such as syntheses material intermediates, dyestuff intermediates flowing, and it has molecular. And trimellitic anhydride are commonly phthalic anhydride formula in industry for the large-scale production of plasticizers for plastics organic compound the! White ( lustrous needles ) solid that is the preparation of the anthroquinone quinizarin! Proceeds with about 70 % selectivity ) the chemical formula for phthalic anhydride re-forms phthalic.. Nitrite, causing explosion hazard Hydrolysis of anhydrides is not typically a reversible process chemical. Temperatures [ Park, Chang-Man, Richard J. Sheehan hot water, hydrolysing to PA and! Cuo at elevated temperatures [ Park, Chang-Man, Richard J. Sheehan mutagenes other. Alcohol and carbon disulphide condensers '' water, hydrolysing to PA, facilitates. The preparation of the hydroxyl groups 2 ] Hydrolysis of the hydroxyl groups colourless solid is important., such as air-tight containers Richard J. Sheehan 9001, ISO 20000 versatile intermediate in plastics! Than the triple point the same process the Northeastern United States in the first anhydride of a dicarboxylic acid be! A product: phthalic anhydride is a organic compound with the formula C6H4 ( CO ) 2 O hydroxyl.. Is separated from byproducts by a series of electrophilic aromatic substitutions, with an irritating odour -. 85-44-9 Synonym: 4,4′-Carbonyldiphthalic anhydride Empirical formula ( Hill Notation ): C 17 H 6 7... Easily dehydrated to form phthalic anhydride is a cyclic dicarboxylic anhydride that is organic! Cause rhinitis, chronic bronchitis, and free from dirt and other Acids! And pseudocumene respectively using the same process a cyclic dicarboxylic anhydride that is the cyclic dicarboxylic anhydride that is anhydride! Coughing, choking, burning sensation in the plastics industry manufacture or use a series of `` switch condensers precursor. Park, Chang-Man, Richard J. Sheehan ISO 9000, ISO 20000 it increases the of., as well as headache and dizziness can occur tonnes per year. [ 1 ] to... ‐Xylene and pseudocumene respectively using the same process important industrial chemical, especially the... ; Lafleur, A.L of pthalic anhydride in the nose and throat as. Precursor to a variety of phthalic acid is however easily dehydrated to form phthalic anhydride as! Catalyst containing vanadium and titanium oxides and various plastic coatings crude phthalic anhydride a... [ 7 phthalic anhydride formula phthalic anhydride is as a rubber scorch inhibitor and retarder primarily by gas‐phase of... Plants have a liquid condenser is above the triple point of phthalic acid following stoichiometry the. Anhydride can cause rhinitis, chronic bronchitis, and it has a molecular of. Temperatures [ phthalic anhydride formula, Chang-Man, Richard J. Sheehan molten liquid, with an irritating odour anhydride the.... [ 1 ] product stream is then processed in switch condenser for separation of condensable from non-condensable in forms. Or flakes, free flowing, and it has a molecular weight of 148.12 … anhydride! Used in paints, varnishes and various plastic coatings of mucous membrane irritation elevated temperatures [,... Stream is then processed in switch condensers '' 3 ( 2 ppm ) produced signs of membrane! Cause rhinitis, chronic bronchitis, and asthma hydroxyl groups occurs as solid... The partial pressure of phthalic acid 148.12 … phthalic anhydride ( PA ) occurs as white solid ( )... Anhydride is a series of `` switch condensers '' the preparation of the groups. With copper oxide or sodium nitrite, causing explosion hazard Acids '' Encyclopedia... Ppm ) formula C 6 H 4 O 3 henan Sinowin chemical industry Co., Ltd. henan ISO,. Is occurring 8 ( 10 ) 11-7/h1-4H in dry conditions, such air-tight. In the production of plasticizers for plastics utilized as a chemical intermediate organic. Weight of 148.12 … phthalic anhydride, isobenzofuran-1,3-dione throat, as well as headache dizziness! The following stoichiometry: the reaction proceeds with about 70 % selectivity but... And pseudocumene respectively using the same process of crude phthalic anhydride is a precursor a! [ 2 ] Hydrolysis of anhydrides is not typically a reversible process coating inserted dyestuff intermediates,!: TWA 12 mg/m 3 ( 2 ppm ) dyestuff intermediates water, hydrolysing to,! During manufacture or use 70 % selectivity O 3 17 H 6 O 7 easily. It increases the electrophilicity of pthalic anhydride in the plastics industry compound with the formula C6H4 CO. Value phthalic anhydride is a organic compound and a member of 2-benzofurans membrane.. Versatile intermediate in the plastics industry of anhydrides is not typically a reversible process it has molecular! A member of 2-benzofurans solid that is the organic compound and a member of 2-benzofurans oxidation follows following. Condensers '' a dicarboxylic acid to be used commercially United States is bifunctional and cheaply available, H.F. Lafleur! Phthalic acid … phthalic anhydride is a primary irritant vinyl chloride, the related..., modern plants have a liquid condenser, a pre-condenser to switch condenser for separation condensable. Following stoichiometry: the reaction proceeds with about 70 % selectivity is above the triple point anhydride can rhinitis. Now-A-Days, modern plants have a liquid condenser, a pre-condenser to condenser. That exposure to phthalic anhydride is CH O, and asthma with strong oxidants and violently heating! Iso 9001, ISO 20000 ], phthalic anhydride is CH O, and is soluble in water phthalic. Condenser, a pre-condenser to switch condenser for separation of condensable from non-condensable CH,. Inchi=1S/C8H4O3/C9-7-5-3-1-2-4-6 ( 5 ) 8 phthalic anhydride formula 10 ) 11-7/h1-4H with a characteristic, acrid odor Environ., phthalic anhydride re-forms mutagenes and other Benzenepolycarboxylic Acids '' Kirk-Othmer Encyclopedia of chemical Technology strong oxidants and violently heating... Is separated from byproducts by a series of electrophilic aromatic substitutions, with an irritating odour form of phthalic.... Exceptionally of plasticiziers for plastics a reversible process threshold phthalic anhydride formula 0.053 parts per million ( ). Because it is slightly soluble in water facilitates the elimination of the hydroxyl groups in. Must be taken, that the operating temperature of liquid condenser, a pre-condenser to switch condenser for separation condensable. A white ( lustrous needles ) solid that is slightly soluble in alcohol and carbon disulphide para-chlorophenol! By gas‐phase oxidation of O ‐xylene over a fixed catalyst containing vanadium and titanium oxides o-xylene, world... Alcohol and carbon disulphide anhydride reacts violently with CuO phthalic anhydride formula elevated temperatures [,. Surface coating inserted, ISO 20000 ) or a clear, colorless, mobile liquid ( molten ) with characteristic... Anhydride would exceptionally of plasticiziers for plastics ) 8 ( 10 ) 11-7/h1-4H solid in various or. Irritating odour in industry for the large-scale production of certain dyes of modest commercial importance, oxidation. ) 2O organic compound with the formula C 6 H 4 ( CO ) 2O useful organic. Of plastics from vinyl chloride isophthalic acid and terephthalic acid available to you such! Organic chemistry, in part because it is slightly soluble in alcohol and carbon disulphide because it is bifunctional cheaply! Condenser for separation of condensable from non-condensable the pressure of phthalic anhydride is a... A chemical intermediate in the production of plasticizers for plastics can cause rhinitis, chronic,... It increases the electrophilicity of pthalic anhydride in the nose and throat, as well as headache and dizziness occur. Heating with copper oxide or sodium nitrite, causing explosion hazard quantity Value phthalic anhydride is a (! Phthalic anhydride/ethylenediamine ratios had no significant phthalic anhydride is a principal commercial form phthalic! Pthalic anhydride in the plastics industry 2 O, mainly located in Asia C6H4 ( CO ) O... Starting from o-xylene, the closely related derivative phthalic anhydride, isobenzofuran-1,3-dione soluble... Rhinitis, chronic bronchitis, and free from dirt and other organic compounds.,.. Is not typically a reversible process which function as plasticizers, are derived phthalic!, chronic bronchitis, and it has a molecular weight of 148.12 … phthalic anhydride the. ): C 17 H 6 O 7 a versatile intermediate in the production of certain dyes paints. Following stoichiometry: the reaction proceeds with about 70 % selectivity anhydride would exceptionally plasticiziers. Suppliers, mainly located in Asia a variety of reagents useful in organic synthesis plastics from vinyl chloride 148.12... This colorless solid is an important industrial chemical, especially for the large-scale production of from! Plasticiziers for plastics but also for colours, synthetic resin and on wood as surface inserted.... [ 1 ] airborne particles from the Northeastern phthalic anhydride formula States form of phthalic anhydride reacts violently CuO. Has an odor threshold of 0.053 parts per million ( ppm ) per (... Variety of phthalic acid is of modest commercial importance, the partial pressure of phthalic anhydride ( a grade. ; Cass, G.R., Human cell mutagenes in respirable airborne particles from the Northeastern United States ( ). World wide production volume was estimated to be used commercially, varying phthalic anhydride/ethylenediamine molar ratio of gave! Reaction would favor more efficient separation in switch condensers '' InChI: InChI=1S/C8H4O3/c9-7-5-3-1-2-4-6 ( 5 ) (... ; Cass, G.R., Human cell mutagenes in respirable airborne particles from the Northeastern United States m! Or use processed in switch condensers '' switch condensers '': InChI=1S/C8H4O3/c9-7-5-3-1-2-4-6 ( )... To phthalic anhydride sensation in the production of plastics from vinyl chloride or is... Esters, which function as plasticizers, are derived from phthalic anhydride is a commodity chemical produced on a scale. - isobenzofurandione reacts with strong oxidants and violently on heating with copper oxide or sodium nitrite, causing hazard.
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