EINECS: 201-607-5. Predicted data is generated using the US Environmental Protection Agency’s EPISuite™. Disposal. 3-Nitrophthalic 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… 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. }}, https://en.formulasearchengine.com/index.php?title=Phthalic_anhydride&oldid=228855. CAS-No. Molecular formula. Appearance. Starting from o-xylene, the oxidation follows the following stoichiometry: The reaction proceeds with about 70% selectivity. CopyCopied, CSID:6552, http://www.chemspider.com/Chemical-Structure.6552.html (accessed 23:06, Jan 8, 2021) Phthalic anhydride is the cyclic dicarboxylic anhydride that is the anhydride 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 dyes (anthraquinone, phthalein, rhodamine, phthalocyanine, fluorescin, and xanthene dyes); insect repellents; and polyester polyols for polyurethanes. Benzene • November 2020 • 418,- €/t (+65) Para-Xylene (PX) • November 2020 • 510,- €/t (-5) Ortho-Xylene (OX) • November 2020 • 550,- €/t (-10) Purity % m/m Phthalic Anhydride 99,5 (Min) This page was last edited on 15 December 2014, at 19:56. IUPAC … This colourless solid is an important industrial chemical, especially for the large-scale production of plasticizers for plastics. Extreme care must be taken, that the operating temperature of liquid condenser is above the triple point. 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. CopyCopied, LGRFSURHDFAFJT-UHFFFAOYSA-N Quantification of mutagenes and other organic compounds., Environ. : TWA 12 mg/m 3 (2 ppm). Exposure to phthalic anhydride may occur during its use as a chemical intermediate in the plastics industry. This reaction is a series of electrophilic aromatic substitutions, with hydroxyl leaving groups picking up protons by Lewis acid catalysis. phthalic anhydride/ethylenediamine molar ratio of 1:1 gave the highest yield of product I. Isophthalic acid and trimellitic anhydride are made from m ‐xylene and pseudocumene respectively using the same process. [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. GOST 7119-77. Type: Phthalic Anhydride. It is also utilized as a rubber scorch inhibitor and retarder. The most probable human exposure to phthalic anhydride is through skin contact or inhalation during manufacture or use. Phthalic anhydride is a white (lustrous needles) solid that is slightly soluble in water. |CitationClass=journal Phthalic anhydride and maleic anhydride are commonly used in paints, varnishes and various plastic coatings. A wide variety of phthalic anhydride options are available to you, such as syntheses material intermediates, dyestuff intermediates. Similarly, varying phthalic anhydride/ethylenediamine ratios had no significant 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… 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. It increases the electrophilicity of pthalic anhydride in the first step, and facilitates the elimination of the hydroxyl groups. 641-70-3. 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. Large scale industrial production of maleic anhydride is achieved by unification of following unit processes: More contemporary routes include catalytic oxidation of ortho-xylene and naphthalene ("Gibbs phthalic anhydride process"), although use of naphthalene has declined. Phthalic anhydride is a principal commercial form of phthalic acid. ; Taghizadeh, K.; Hemond, H.F.; Lafleur, A.L. 1,2-Benzenedicarboxylic anhydride, PAN, Phthalic acid anhydride White solid (flake) or a clear, colorless, mobile liquid (molten) with a characteristic, acrid odor. Chemsrc provides Phthalic anhydride(CAS#:85-44-9) MSDS, density, melting point, boiling point, structure, formula, molecular weight etc. Phthalic anhydride is the organic compound with the formula C6H4(CO)2O. Articles of Phthalic anhydride are included as well. Molecular Mass 148.11. 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. {{#invoke:citation/CS1|citation 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). The cyclic dicarboxylic anhydride that is the anhydride of phthalic acid. John Wiley & Sons, Inc. 2005]. This colourless solid is an important industrial chemical, especially for the large-scale production of plasticizers for plastics. 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