Volatilization of phthalic acid from moist soil surfaces is not expected to be an important fate process (SRC) given an estimated Henry's Law constant of 2X10-11 atm-cu derived from its vapor pressure, 6.36X10-7 mm Hg (3), and water solubility, 6965 mg/L (4). Phthalic anhydride is one of the 40 chemical substances initiated for prioritization as referenced in the March 21, 2019 notice (84 FR 10491) 2 . Phthalic anhydride has also been used as a rubber scorch inhibitor and retarder. [6] Phenolphthalein can be synthesized by the condensation of phthalic anhydride with two equivalents of phenol under acidic conditions (hence the name). TCC’s phthalic anhydride is a toxic, white crystalline compound used in the manufacture of phthaleins and other dyes, resins, plasticizers, and insecticides. Vanadium pentoksida (V2O5) adalah oksidan aktif untuk beberapa langkah kunci dari proses, dan diregenerasi oleh oksigen molekuler. Product name : Phthalic Anhydride CAS-No. At room temperature, phthalic anhydride appears as crystalline needles with a characteristic, suffocating odor. Incompatible with acids, strong oxidizing agents, alcohols, amines, and bases. Get medical attention. Other reactions with phthalic anhydride yield phenolphthalein, benzoic acid, phthalylsulfathiazole (an intestinal antimicrobial agent), and orthophthalic acid. Physical properties Colorless to pale cream crystals with a characteristic, choking odor. Phthalic anhydride ACS reagent, ≥99% CAS Number 85-44-9. Hydrolysis by hot water forms ortho-phthalic acid:[13]. Phthalic Anhydride. Varma, V.B. Vapor pressure is < 0.3 Pa at 20 ° C. In presence of water phthalic anhydride hydrolyzes to phthalic acid. "Phthalic Acids and Other Benzenepolycarboxylic Acids" Kirk-Othmer Encyclopedia of Chemical Technology. 100% Phthalic Anhydride 85‐44‐9 4. Inhalation Remove to fresh air. I.K. InChI=1S/C8H4O3/c9-7-5-3-1-2-4-6(5)8(10)11-7/h1-4H, Except where otherwise noted, data are given for materials in their, National Institute for Occupational Safety and Health, Ullmann's Encyclopedia of Industrial Chemistry, "Development of a gel permeation chromatographic assay to achieve mass balance in cellulose acetate phthalate stability studies", https://en.wikipedia.org/w/index.php?title=Phthalic_anhydride&oldid=998651643, Pages using collapsible list with both background and text-align in titlestyle, Articles containing unverified chemical infoboxes, Creative Commons Attribution-ShareAlike License, This page was last edited on 6 January 2021, at 11:24. It may be prepared by adding a hot solution of phthalimide to a solution of potassium hydroxide; the desired product precipitates. Hydrolysis of anhydrides is not typically a reversible process. Above 180 °C, phthalic anhydride re-forms. An alternative process involves oxidation of the two methyl groups of o-xylene, a more atom-economical process. Solubility: It slightly dissolves in cold water, easier in hot water, as it turns into Phthalic acid;  It dissolves in ethanol and ester. This colorless solid is an important industrial chemical, especially for the large–scale production of plasticizers for plastics. Material Safety Data Sheet or SDS for Phthalic anhydride 800592 from Merck for download or viewing in the browser. Molecular Weight 148.12 . John Wiley & Sons, Inc. 2005]. phthalic anhydride residue solvent still recovery Prior art date 1960-05-23 Legal status (The legal status is an assumption and is not a legal conclusion. Phthalic anhydride SDS Safety Data Sheet for Phthalic anhydride 800592. Phthalic anhydride was first reported in 1836 by Auguste Laurent. Vapor pressure is < 0.3 Pa at 20 ° C. In presence of water phthalic anhydride hydrolyzes to phthalic acid. 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