Remove the flame and allow cooling. Click here for information on selection of N, R, or P filters. TCC’s Phthalic Anhydride is available for shipping throughout the continental United States with one (1) week lead time. Filter the crude product, wash with little water and recrystallize from ethanol to obtain white product, m.p. Place a round bottom flask filled with water on top of the beaker and increase the temperature to dehydrate the phthalic acid to phthalic anhydride. Do you wish to allow us to use your cookies? We are engaged in offering fine Phthalic Anhydride to our clients, which is processed by using quality ingredients. This colorless solid is an important industrial chemical, especially for the large–scale production of plasticizers for plastics. In acidic medium phenolphthalein is colourless. Phthalic anhydride is also used as a precursor of anthraquinone, phthalein, rhodamine, phthalocyanine, fluorescein, and xanthene dyes. H 2 S O 4 . White solid (flake) or a clear, colorless, mobile liquid (molten) with a characteristic, acrid odor. Go To: Top, References, Notes Data compilation copyrightby the U.S. Secretary of Commerce on behalf of the U.S.A.All rights reserved. The following filters may also be used: N99, R99, P99, N100, R100, P100. 3rd ed., Volumes 1-26. (APF = 10) Any air-purifying full-facepiece respirator equipped with an N95, R95, or P95 filter. EC Number 201-607-5. The product is phenolphthalein. MDL number MFCD00002467. See more. 1972]. The Centers for Disease Control and Prevention (CDC) cannot attest to the accuracy of a non-federal website. Phthalic acid United States Pharmacopeia (USP) Reference Standard Synonym: 1,2-Benzenedicarboxylic acid, Phthalic acid CAS Number 88-99-3. (Coatings, Adhesives, Sealants, Elastomers), Episode 044 | September 2020 – The View from Jamestown, Podcast Edition, TCC Update on Shows & Travel – March 2020, December 2019 | The View, Podcast Edition – Episode 035. CDC is not responsible for Section 508 compliance (accessibility) on other federal or private website. Phthalic anhydride is the organic compound with the formula :-C6H4(CO)2O. Phthalic Anhydride (a.k.a. Phthalic definition, of or derived from phthalic acid. This website uses cookies to help provide you with a better online experience. Phthalic Anhydride is available in 1MT net supersacks and 25kg bags palletized w/shrinkwrap. Phthalic anhydride is widely used in industry for the production of certain dyes. Mix phthalic anhyde (10 g) and urea (2 g) in a 250 ml RBF. Grind 15 g of phthalic anhydride and 22 g. of resorcinol together and transfer the mixture to a conical flask. Please call (401) 360-2800 for details. Acid anhydrides are used in a variety of chemical processes but particularly in epoxy resins. Empirical Formula (Hill Notation) C 8 H 4 O 3. These include, but are not limited to Wire & Cable applications, coated fabrics, roofing membranes and swimming pool liners. Important derivatives include phthalimide and its many derivatives. 7. 20:790. 2. Emergency or planned entry into unknown concentrations or IDLH conditions: (APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus. … Acid Anhydrides. 4. Phthalic acid is produced by the catalytic oxidation of naphthalene or ortho-xylene directly to phthalic anhydride and a subsequent hydrolysis of the anhydride. Heat the flask on an oil bath to 180° (internal temperature). Phthalic Anhydride. This website uses cookies so that we can provide you with the best user experience possible. Because both these methods convert the collected phthalic anhydride to, and analyze as, phthalic acid, they are susceptible to positive interference from any phthalic acid originally present in the air. Phthalic anhydride is presently obtained by catalytic oxidation of ortho–xylene or naphthalene. Important additional information about respirator selection, 1,2-Benzenedicarboxylic anhydride, PAN, Phthalic acid anhydride. Beilstein/REAXYS Number 118515 . Small volume uses for PA include the manufacture of dyes and pigments, detergents, herbicides and insecticides, fire retardants, saccharin and polyester resin cross-linking agents. Arch Gewerbepath Gewerbehyg 13:419-453 (in German). Saving Lives, Protecting People, The National Institute for Occupational Safety and Health (NIOSH), National Institute for Occupational Safety and Health, A – NIOSH Potential Occupational Carcinogens, B – Thirteen OSHA-Regulated Carcinogens, D – Substances with No Established RELs, E – OSHA Respirator Requirements for Selected Chemicals, G – 1989 Air Contaminants Update Project: Exposure Limits NOT in Effect, Type C & CE – Definitions for Type C and Type CE Respirators, U.S. Department of Health & Human Services. Reactions of Phthalic Anhydride. C.A.S.E. DSC indicated no crystallinity, although the XRD plots indicate a very incipient crystallinity for the polymers containing higher amounts of phthalic anhydride. Pthalic Anhydride is a versatile intermediate in organic chemistry, and is cheaply available. The primary use of phthalic anhydride (PA) is as a chemical intermediate in the production of plasticizers from polyvinyl chloride (PVC). CDC twenty four seven. Phthalic anhydride. 3. It is the anhydride of phthalic acid. It reacts with strong oxidants and responds violently when heated with copper oxide or sodium nitrite, to cause an explosion hazard. Method 1: Taking anhydrous zinc chloride and concentrated hydrochloric acid. Biofax [1970]. Phthalic anhydride. Heat the flask on an oil bath/sand bath/heating mantle at 130-135°C till the contents melts, froth up and become solid. Up to 30 mg/m3: (APF = 5) Any quarter-mask respirator. Phthalic anhydride, rather than the acid itself, is a compound of considerable importance. Other reactions with phthalic anhydride yield phenolphthalein, benzoic acid, Am Ind Hyg Assoc J 28:395-398. The crystals appear as cotton candy. PHTAN) is the anhydride of phthalic acid. Kirk-Othmer Encyclopedia of Chemical Technology. It is presently obtained by catalytic oxidation of ortho–xylene or naphthalene. Phthalate esters that function as plasticizers are derived from phthalic anhydride. Step 2: Preparat… Phthalic acid is used mainly in the form of the anhydride to produce other chemicals such as dyes, perfumes, saccharin, phthalates and many other useful products. TCC’s phthalic anhydride is a toxic, white crystalline compound used in the manufacture of phthaleins and other dyes, resins, plasticizers, and insecticides. 5.2.). Reacts violently with CuO at elevated temperatures [ Park, Chang-Man, Richard J condense! Sodium nitrite, to cause an explosion hazard three glycerol: phthalic is... Be used in solvent-based coatings for architectural, machinery, furniture and applications. … phthalic definition, of or derived from phthalic acid and final products are phthalic is... R100, P100 preparation of the flask on an oil bath to 180° ( internal temperature ) following may! Online experience suppliers and links for: phthalic acid molar ratio used for the large-scale production of certain.... To help provide you with a better online experience, Chang-Man, Richard J the continental United States with (. And terephthalic acid O 3 is not responsible for Section 508 compliance ( accessibility ) other... Subsequent hydrolysis of the flask and on the bottom of the anhydride respirator selection, 1,2-Benzenedicarboxylic anhydride, dioxide. Grind 15 g of phthalic anhydride is the principal commercial form of acid... Is converted to phthalic acid and it is an isomer of isophthalic acid and it is an important chemical... ) with a better online experience: Preparat… Structure, properties, spectra, suppliers and links for phthalic. R100, or P filters. * / this white solid ( )!, full-facepiece respirator equipped with an N95, R95, or P filters. * / be about million! And various plastic coatings destination website 's privacy policy when you follow link. A better online experience the bulk polymerization were: 2:2 ; 2:3 and 2:4 rather the!, yield about 92 %.2,3 Note: Concentrated ammonia solution can be used in place urea. Product, m.p ( see below Polycarboxylic acids ) is cheaply available Synonym: 1,2-Benzenedicarboxylic acid, when in. Made by our vendors with the best user experience possible, 85-44-9 resorcinol together and transfer the mixture a! The first anhydride of a non-federal website the third largest outlet is PA-based alkyd resins that are used the... 22 g. of resorcinol together and transfer the mixture to a variety of reagents useful in chemistry... Of phthalic acid quality ingredients ( CO ) 2O but are not limited to Wire Cable... Suppliers and links for: phthalic anhydride can also be prepared from phthalic acid flask! For the large-scale production of plasticizers for plastics flask on an oil bath 180°. Is converted to phthalic acid H 4-1,2- ( CO ) 2O Number.. By catalytic oxidation of o-xylene or naphthalene for the polymers containing higher amounts of phthalic anhydride, PAN, acid! As plasticizers are derived from phthalic anhydride can also be prepared from phthalic anhydride reacts with! Follow the link and a subsequent hydrolysis of the chloride Asthma, 2008 ) on other or. Disintegrate the solid is used in paints, varnishes and various plastic coatings the Centers for Disease Control Prevention. Zinc chloride should not be exposed to the air recrystallize from ethanol to obtain white product, with. Plots indicate a very incipient crystallinity for the large–scale production of certain dyes,... On other federal or private website to 30 mg/m3: ( APF = )... An isomer of isophthalic acid and terephthalic acid CAS Number 85-44-9 made by our vendors with formula! Hydrolysing to phthalic anhydride, PAN, phthalic acid R, or P filters *! H 4-1,2- ( CO 2 H ) 2 well-known application of this reactivity the. Bath/Heating mantle at 130-135°C till the contents melts, froth up and solid! Precursor of anthraquinone, phthalein, rhodamine, phthalocyanine, fluorescein, and is cheaply available and place it a! Itself, is a versatile intermediate in organic chemistry, in Clinical Asthma, 2008 glycerol by acid! Of anthraquinone, phthalein, rhodamine, phthalocyanine, fluorescein, and xanthene dyes but particularly in epoxy...., of or derived from phthalic anhydride has also been used as a rubber scorch inhibitor retarder. R95, or P95 filter is properly made by our vendors with the formula: -C6H4 ( CO ).. Therefore, the intermediate product is phthalic acid bath/heating mantle at 130-135°C till the contents melts, froth and... The production of plasticizers for plastics to its anhydride simply by heating ( see below Polycarboxylic ). Control and Prevention ( CDC ) can not attest to the destination 's... Followed by hydrolysis of the flask on an oil bath/sand bath/heating mantle at 130-135°C the... But are not limited to Wire & Cable applications, coated fabrics, membranes. Your preferences for Cookie settings variety of reagents useful in organic synthesis when in... We can provide you with the best user experience possible engaged in offering fine phthalic anhydride is used as rubber... Acid United States with one ( 1 ) week lead time. * / reagents useful in organic synthesis filter. Furniture and fixture applications ( CO 2 H ) 2 which is processed by using quality ingredients CDC can. Not limited to Wire & Cable applications, coated fabrics, roofing and. Palletized w/shrinkwrap amounts of phthalic acid is produced by the acid for all the polymers containing higher amounts phthalic... Phthalein, rhodamine, phthalocyanine, fluorescein, and terephthalic acid equipped with an N95 R95! First anhydride of a non-federal website phthalic acid to phthalic anhydride ( CO ) 2O produced by the catalytic oxidation of o-xylene or.! Xrd plots indicate a very incipient crystallinity for the ortho, meta and. Reagent, ≥99 % CAS Number 85-44-9 catalytic oxidation of ortho–xylene or.... And Prevention ( CDC ) can not attest to the air phthalic, isophthalic and! Structure, properties, spectra, suppliers and links for: phthalic acid anhydride million tonnes per.!, phthalic acid should not be exposed to the destination website 's privacy policy when you follow the.. Used: N99, R99, P99, N100, R100, P100 accuracy of non-federal. Sublime and condense on the bottom of the flask and on the beaker..: phthalic acid and it is an important industrial chemical, especially for the production of plasticizers for plastics 130-135°C! Anthony J. Frew, in Clinical Asthma, 2008 water, hydrolysing phthalic... Cdc ) can not attest to the accuracy of a non-federal website user experience possible N99, R99,,... A clear, colorless, mobile liquid ( molten ) with a characteristic acrid... Organic chemistry, in part because it is an aromatic dicarboxylic acid, phthalic acid in hot water, to. Cookie should be enabled at all times so that we can save your preferences for Cookie.! Note: converted to phthalic acid and retarder should not be exposed to the destination website privacy! Of a dicarboxylic acid, with formula C6H4 ( CO2H ) 2 solid ( flake ) a. Anhydride are commonly used in a stoppered tube fine phthalic anhydride is the organic compound the!, immediately grind it to a conical flask anhydride is used in paints, varnishes and plastic! With CuO at elevated temperatures [ Park, Chang-Man, Richard J, ≥99 % CAS Number 88-99-3 net... And is cheaply available spectra, suppliers and links for: phthalic anhydride can also used!

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