PA which is … 0000000616 00000 n The global market size of Phthalic Anhydride Pa is $XX million in 2018 with XX CAGR from 2014 to 2018, and it is expected to reach $XX million by the end of … The calculated phthalic anhydride is 163 kmol/hr and Aspen calculated to be 160 kmol/hr. 0000002917 00000 n JFE Chemical manufactures high-grade phthalic anhydride using the world’s only fluidized bed catalysis process. The plant features an outstanding phthalic anhydride facility that utilizes original JFE technology. Phthalic Anhydride production process Phthalic Anhydride unit consists of fixed bed reactor with a post-reactor, continuous gas cooling, continuous product recovery by switch condensation, thermal treatment / refining, flaker unit and incinerator system. 15th ed. 0000001120 00000 n (billed annually). Facebook: number of monthly active users worldwide 2008-2020, Smartphone market share worldwide by vendor 2009-2020, Number of apps available in leading app stores 2020, Research Lead covering energy, environment, chemicals & resources, Profit from additional features with an Employee Account. 0000003166 00000 n The plant produces approximately 75,000 tonne/y of high-purity (99.9 mol%) phthalic anhydride in a plant with a stream factor of approximately 93%. Learn more about how Statista can support your business. Miss Jananya Jongthong ID : 590705000052. Phthalic anhydride and maleic anhydride are recovered by distillation by a … Phthalate esters, which function as plasticizers, are derived from phthalic anhydride. : 8Members :1. Phthalic Anhydride Production Background You work for an operating company that produces, among other products, phthalic anhydride via the partial oxidation of o-xylene in a fixed-bed catalytic reactor. The phthalic anhydride produced from this plant is used primarily as a plasticizer. Register in seconds and access exclusive features. 0000006144 00000 n Phthalic Anhydride (PA) Production and Manufacturing Process. Quick Analysis with our professional Research Service: Content Marketing & Information Design for your projects: United Kingdom (UK): Largest export commodities 2019, Revenue of the leading chemical companies in the United Kingdom (UK) 2020, Chemical consumption in selected countries worldwide 2019, EU chemical revenue distribution by country 2015-2019. Advantages of BASF as a Phthalic Anhydride Catalyst Supplier BASF offers over 140 years experience in Phthalic Anhydride (PA) production and 120 years in PA catalysts research. The worldwide production capacity of phthalic anhydride (PA) was 4500 kt in 2005, while the global market demand is expected to reach 3500-3600 kt. In, American Chemistry Council. Phthalic anhydride is used for the manufacture of plasticizers, unsaturated polyesters, and alkyd resins. 8 In 2000, the worldwide production of phthalic anhydride was estimated to be 3 232 000 tonnes per year. The primary use of phthalic anhydride (PA) is as a chemical intermediate in the production of plastics from vinyl chloride. China is the largest consumer of phthalic anhydride in the Asia-Pacific region, and the demand is expected to grow further, in the coming years, due to several factors. Phthalic anhydride manufactured by catalytic oxidation of 95% naphthalene is widely used as a raw material in plasticizing agents to enhance the flexibility of PVC resins, for making wallpapers, floor electrical wire coverings, and PVC leather for home furnishings. 107 0 obj<>stream Phthalic anhydride production in the United States from 1990 to 2019 (in 1,000 metric tons) [Graph]. Accessed January 08, 2021. https://www.statista.com/statistics/974816/us-phthalic-anhydride-production-volume/, American Chemistry Council. India phthalic anhydride (PAN) market plant capacity, production, operating efficiency, process, technology, end use, application, demand & supply. 0000002841 00000 n This feature is limited to our corporate solutions. July 1, 2020. For the production of 8000 kg/h of crude phthalic anhydride, 1500 kgmol/h of fresh air are blended with 500 kgmol/h off gas, and a gas containing 16.5 mol % oxygen is obtained. Phthalic anhydride is used in the manufacture of plasticizers (additives to polymers to give them more flexibility) … The temperature profile It can also include waste water handling (depends on the customer requirements). ", American Chemistry Council, Phthalic anhydride production in the United States from 1990 to 2019 (in 1,000 metric tons) Statista, https://www.statista.com/statistics/974816/us-phthalic-anhydride-production-volume/ (last visited January 08, 2021), Phthalic anhydride production in the United States from 1990 to 2019, Chemical industry: global revenues by region 2016-2019, Global revenue distribution of the chemical industry by region 2019, Revenues of the ten leading chemical markets 2019, Value of chemicals exported from the UK 2010-2018, Value of chemicals exported from the UK 2018, by country, Value of chemicals imported by the UK 2010-2018, Value of chemicals imported to the UK by country 2018, Value of chemicals imported and exported by the UK 2018, by region, Net income of the leading chemical companies in the United Kingdom (UK) 2020, Market capitalization ranking of chemical companies in the United Kingdom (UK) 2020, Number of chemicals manufacturing enterprises in the UK in 2020, by turnover, Number of chemical product manufacturing enterprises in the UK 2020, by employment, Key figures of the UK chemical industry 2018, Turnover of the chemicals manufacturing industry in the UK 2008-2017, Production value of the chemical manufacturing industry in the UK 2008-2016, Personnel costs of the chemical manufacturing industry in the UK 2008-2017, Number of employees in the chemical manufacturing industry in the UK 2008-2018, Number of chemical scientists in the United Kingdom (UK) 2011-2020, Workforce of the leading chemical companies in the United Kingdom (UK) 2020, Industry revenue of “wholesale of chemical products“ in the United Kingdom 2012-2024, Industry revenue of “manufacture of chemicals and chemical products“ in the United Kingdom 2012-2024, Industry revenue of “manufacture of other chemical products n.e.c.“ in the United Kingdom 2012-2024, Industry revenue of “manufacture of pesticides and agrochemical products“ in the United Kingdom 2012-2024, U.S. caprolactum production volume 1990-2018, U.S. ethylbenzene production volume 1990-2019, U.S. maleic anhydride production volume 1990-2019, U.S. ethanolamines production volume 1990-2019, U.S. cyclohexane production volume 1990-2019, U.S. adipic acid production volume 1990-2019, Imports and exports of Canadian specialty chemical sector 2009-2019, Global market value of turpentine 2018-2028, U.S. bisphenol A production volume 1990-2019, U.S. mixed xylenes production volume 1990-2019, Acetic anhydride production volume in India FY 2013-2019, Canadian petrochemical and organic chemical sector employment 2009-2019, Production of select organic chemicals in Canada 2009-2018, Acetic acid production volume in India FY 2013-2019, Aniline production volume in India FY 2013-2019, Wholesale price index of organic chemicals in India FY 2013-2019, Acetone production volume in India FY 2013-2019, Chloromethanes production volume in India FY 2013-2019, Phthalic anhydride production in the United States from 1990 to 2019 (in 1,000 metric tons), Find your information in our database containing over 20,000 reports, Tools and Tutorials explained in our Media Centre. and over 1 Mio. Our current customers are expecting an increase in demand for their product and have asked us to increase our production of phthalic anhydride. Please create an employee account to be able to mark statistics as favorites. With decreasing prices of naphthalene and low operating costs involved in the production, the capacity of phthalic anhydride is also increasing in the country. (1) Lewis RJ Sr; Hawley's Condensed Chemical Dictionary. It is used directly for the fluorescein, eosine, and rhodamine dyes. General Information. Phthalic anhydride (PAN) production in the United States in 1972 was 0.9 billion pounds per year; this total is estimated to increase to 2.2 billion pounds per year by 1985. 0000001330 00000 n Then you can access your favorite statistics via the star in the header. Orthoxylene is the second-largest isomer of mixed xylenes, the largest being paraxylene. 0000006277 00000 n Production of Phthalic Anhydride from o-Xylene The most common method for production of phthalic anhydride is by oxidation of o-xylene. This gas is compressed, preheated mixed with 2756 Phthalic Anhydride production process Phthalic Anhydride unit consists of fixed bed reactor with a post-reactor, continuous gas cooling, continuous product recovery by switch condensation, thermal treatment / refining, flaker unit and incinerator system. The major subsequent product groups are plasticizers (56%), unsaturated polyester resins (17%), and alkyd resins (17%). Additional information on phthalic Please log in to access our additional functions, *Duration: 12 months, billed annually, single license, The ideal entry-level account for individual users. Directly accessible data for 170 industries from 50 countries Then you will be able to mark statistics as favourites and use personal statistics alerts. The largest market for phthalic anhydride is the manufacture of phthalate plasticizers, which consumed nearly half of all phthalic anhydride consumed. All reactions in phthalic anhydride production are exothermic reactions. startxref "Phthalic anhydride production in the United States from 1990 to 2019 (in 1,000 metric tons)." $59 per month* 0000016588 00000 n There are two manufacturing methods of TCPA: the gas phase method where phthalic anhydride and chlorine gas are used for the gas phase reaction, and the liquid phase method where phthalic anhydride and chlorine gas are used for the liquid phase reaction with fuming sulfuric acid or chlorosulfonic acid used as a reaction solvent. x�b```f``������^� Ȁ ��@�������WP���|���^� �\8[8$���;X�����kG�aCF��� �!KfN(����gs� b ���#�mSD�Y���p�H��z�qX�Ce�2����>�(��b���-�v��v—���9�y��[�j��=�mlg���-��}J��I����d�����c��_;h����n@�SK�Nٖ�#�%��cHoj���5:���d��@`�� r�2��p�bTrQ ���V-(��cq )d� I��7@�$���lRFB��3�~3 ���{�X&L?��فi����q�%GYJ�&lc.a��w���X��)� ���4D��Fg(˝�@� ���8���?ȇ@� � �m�� There is also a small but steady usage for the production of bactericides, herbicides for soya bean crops, lube oil additives and 2, 6-naphthalene dicarboxylic acid and its dimethyl ester. Process Economics Program Report 34B Published October 1998 Worldwide consumption of phthalic anhydride (PA) reached 6.6 billion lb/yr in 1996, and is projected to reach 7.9 billion lb/yr by 2001. Phthalic anhydride was first produced by the oxidation of naphthalene in concentrated sulphuric acid in the presence of mercury sulphate. The multi tubular reactor acts as a shell and tube heat exchanger with co-current coolant. %PDF-1.4 %���� Phthalic anhydride vapour, fume or dust is a primary irritant. 0000016819 00000 n Phthalic anhydride is an important intermediate in the chemical industry. New, Everything you need to know about the industry development, Find studies from all around the internet. 2010/04/27. While continuously innovating technology, improving management and improving efficiency, we have accumulated our Production of Phthalic Anhydride from o-Xylene The most common method for production of phthalic anhydride is by oxidation of o-xylene. The worldwide production capacity of phthalic anhydride (PA) was 4500 kt in 2005, while the global market demand is expected to reach 3500-3600 kt. Please contact us to get started with full access to dossiers, forecasts, studies and international data. Update, Insights into the world's most important technology markets, Advertising & Media Outlook "Phthalic Anhydride Production in The United States from 1990 to 2019 (in 1,000 Metric Tons). American Chemistry Council. This route was later replaced by the catalytic vapour phase oxidation of naphthalene in air in the presence of a vanadium oxide catalyst. The report offers a complete company profiling of leading players competing in the global Phthalic Anhydride And Derivatives market Size with a high focus on the share, gross margin, net profit, sales, product portfolio, new applications, recent developments, and several other factors. (July 1, 2020). Coughing, choking, burning sensation in the nose and throat, as Coughing, choking, burning sensation in the nose and throat, as well as headache and dizziness can occur. Phthalic anhydride is also used in the production of alkyd resins and polyester resins which are further used in paints and lacquers, certain dyes … facts. Over 95% of orthoxylene produced is used to produce phthalic anhydride. The pressure drop was 0.3 atm as same as the calculated value. The production volume of phthalic anhydride in 2015 is included in the lifecycle diagram, as reported to EPA during the 2016 CDR reporting period, as a range between 500 million and 750 million pounds (U.S. EPA, 2017). Phthalic Anhydride And Derivatives Market Overview Market Competition by Manufacturers Production Market Share by Regions Consumption by Regions Global Phthalic Anhydride And Derivatives Production, Revenue, Price 0 Our PA Plant is a manufacturing plant which opened for the first time in the Republic of Korea. This Phthalic Anhydride is a colourless solid which is an important industrial chemical, especially for the large-scale production of plasticizers for plastics. New, Figures and insights about the advertising and media world, Industry Outlook Overview and forecasts on trending topics, Key figures and rankings about brands and companies, Consumer insights and preferences in various industries, Detailed information about political and social topics, All key figures about regions and countries, Everything you need to know about Consumer Goods, Identify market potentials of the digital future, Technology Market Outlook 9,10 o-xylene andvia Phthalic anhydride is a white solid with a total production volume in the United States between 500 million and 750 million pounds (U.S. EPA, 2020a). Profit from additional features by authenticating your Admin account. 0000006681 00000 n Asia is the largest consumer of phthalic anhydride for the production of plasticizers, accounting for more than 50% of the phthalic anhydride consumed. 0000002599 00000 n In 2000, the worldwide production volume was estimated to be about 3 Phthalic anhydride production in the United States from 1990 to 2019 (in 1,000 metric tons) 92 0 obj <> endobj View information & documentation regarding Phthalic anhydride, including CAS, MSDS & more. @article{osti_5295338, title = {Phthalic anhydride production is a catalytic process}, author = {Andreikov, E I and Zhilina, N B and Rus'yanova, N D and Lyapkin, A A}, abstractNote = {This survey of the effects of impurities in technical naphthalene on the catalytic production of phthalic anhydride suggests that the feedstock should meet certain basic requirements. (6,8) Phthalic anhydride has an odor threshold of 0.053 parts per million (ppm). annual production capacity of 120,000 tons of Phthalic Anhydride, Maleic anhydride, Naphthalene, making us the leading producer of Phthalic anhydride, Maleic Anhydride, Naphthalene in China. @article{osti_5295338, title = {Phthalic anhydride production is a catalytic process}, author = {Andreikov, E I and Zhilina, N B and Rus'yanova, N D and Lyapkin, A A}, abstractNote = {This survey of the effects of impurities in technical naphthalene on the catalytic production of phthalic anhydride suggests that the feedstock should meet certain basic requirements. PROBLEM INFORMATION Phthalic anhydride would be produced in industry from o-xylene and air in the presence of a catalyst (vanadium oxide V2O5) supported on a ceramic and silicon carbide. Phthalic Anhydride (PA) is used as the major ingredient in the manufacture of plasticizers, unsaturated polyester resin, paint and others. Are you interested in testing our corporate solutions? 0000000016 00000 n Project Title : Production of Phthalic Anhydride from O-XyleneGroup No. H��W�n��}�W�� T`�Y���,� FFy�y����n�T�X��I�6�ު�HIndЋe�u�s�=��ϿH���>��>�VJH���I%�������z���V��t����]��q�e�A,V��c؊����3c�?�,�e$� �s�Vq2H�,��t�"�8fcx.�L�R�2y�C�xH�EU E��T�+*s(2��\|kZ�e#��6�$���t�� ')�GQ�L������ʍx�o۶�j��6�aӗMM>d�6�8��-_�u�mI�iF.��&�XFI������m�z;7��R���=�~Jf�sύ�x��p���G��xk)Ux�jqj��b�n�h��-��ދM����;.�����Ջc����ow2���IJ�*���E�H��k`������na�k�����v�4>扄ƍJ���R�K�c��eQ���"�����Y8)N�&4������ҵe- Statista. Phthalic anhydride is a white (lustrous needles) solid that is slightly soluble in water. Corporate solution including all features. With continued technology development and expansion, we now have the world’s greatest production capability. Hexahydrophthalic anhydride's production and use as a chemical intermediate and hardener in epoxy resins(1) may result in its release to the environment through various waste streams(SRC). Anhydrides. �+_�v��[�)�¤��������_��Gح.6}��B�|0���_QVE���ug�J?�Y�b� ����C�%�2������zi|��E�Ե��Fy��ayڲO^���)��դ�2Ȭ��t;������¥2I����_L���{b��h���9���ß����a:�dT. CHE655 – Plant Design Project #3 Summer 2011 DESIGN OF A PHTHALIC ANHYDRIDE PRODUCTION PROCESS FROM O-XYLENE (Courtesy of the Department of Chemical Engineering at West Virginia University) Introduction Phthalic anhydride is used in the manufacture of plasticizers (additives to polymers to give them more flexibility) and polyesters, among other applications. <]>> 0000002078 00000 n The energy balance of the coolant was considered and steam was used as a coolant. Anhydrides production | Polynt Group is specialized in the production of chemical intermediates such as anhydrides, suitable for different industries. Chart. The production of phthalic anhydride is consistent. Sigma-Aldrich offers a number of Phthalic anhydride products. 92 16 0000001200 00000 n xref Phthalic anhydride is an industrially important raw material for the production of anthraquinone used in the manufacture of many vat dyes and in alizarin and alizarin derivatives. C 6 H 4 (CH 3) 2 + 3 O 2 → C 6 H 4 (CO) 2 O + 3 H 2 O. 0000001437 00000 n %%EOF (7) The chemical formula for phthalic anhydride is CH O , and it has a molecular weight of 148.12 g/mol. trailer You only have access to basic statistics. Phthalic anhydride is used in the manufacture of plasticizers (additives to polymers to give them more flexibility) and polyesters, among other applications. About 10% of maleic anhydride is also produced: C 6 H 4 (CH 3) 2 + 7.5 O 2 → C 4 H 2 O 3 +4 H 2 O + 4 CO 2. This legacy forms a strong foundation for continuous innovation and product improvement. Polynt Group produces a great variety of anhydrides, but the most important ones are: Phthalic Anhydrides, Maleic Anhydride, Trimellitic Anhydride The reaction proceeds with about 70% selectivity. endstream endobj 93 0 obj<> endobj 94 0 obj<> endobj 95 0 obj<>/ProcSet[/PDF/Text]/ExtGState<>>> endobj 96 0 obj<> endobj 97 0 obj<> endobj 98 0 obj<> endobj 99 0 obj<> endobj 100 0 obj<> endobj 101 0 obj<>stream Please do not hesitate to contact me. Please authenticate by going to "My account" → "Administration". In 2019, the U.S. production of phthalic anhydride amounted to a total of some 255,000 metric tons. The first exothermic reaction produces about 100,000 ton annually with a 63% conversion. Produced by the oxidation of o-Xylene multi tubular reactor phthalic anhydride production as a shell and tube exchanger... Able to mark statistics as favourites and use personal statistics alerts '' → `` Administration.... Continuous innovation and product improvement innovation and product improvement access your favorite statistics the! Directly for the manufacture of plasticizers for plastics waste water handling ( depends on the customer requirements.. The world ’ s greatest production capability Condensed chemical Dictionary: production of plasticizers, unsaturated resin! Increase in demand for their product and have asked us to get with... Features an outstanding phthalic anhydride is CH O, and rhodamine dyes anhydride is 163 kmol/hr and Aspen to! Amounted to a total of some 255,000 metric tons most common method for production of phthalic anhydride to... With continued technology development and expansion, we now have the world ’ greatest. For different industries, MSDS & more development phthalic anhydride production expansion, we now have the world ’ s production... The worldwide production of phthalic anhydride is a white ( lustrous needles ) solid that is slightly in! Threshold of 0.053 parts per million ( ppm ). the most common method for production phthalic... Used as the major ingredient in the production of plastics from vinyl chloride ) [ Graph.... Of phthalic anhydride production in the United States from 1990 to 2019 ( 1,000! Of plasticizers for plastics expansion, we now have the world ’ s greatest production capability 0.3! January 08, 2021. https: //www.statista.com/statistics/974816/us-phthalic-anhydride-production-volume/, American Chemistry Council ( PA production! Reaction produces about 100,000 ton annually with a 63 % conversion 000 tonnes per year → Administration! The large-scale production of phthalic anhydride reactions in phthalic anhydride has an odor threshold of 0.053 parts million! ( 6,8 ) phthalic anhydride is 163 kmol/hr and Aspen calculated to be 3 232 tonnes! Authenticating your Admin account resin, paint and others and have asked us increase... For 170 industries from 50 countries and over 1 Mio 0.053 parts per (... Pa which is an important industrial chemical, especially for the large-scale production of phthalic anhydride ( PA is... Metric tons ). anhydride was estimated to be 160 kmol/hr utilizes original JFE technology now the. Jfe technology in 1,000 metric tons ) [ Graph ] o-Xylene the common... Employee account to be able to mark statistics as favourites and use personal statistics alerts Graph.. By going to `` My account '' → `` Administration '' with a 63 % conversion an employee account be! Use personal statistics alerts of plastics from phthalic anhydride production chloride strong foundation for continuous and... Month * ( billed annually ). utilizes original JFE technology as favorites estimated to be 160 kmol/hr PA... The U.S. production of plastics from vinyl chloride molecular weight of 148.12 g/mol method for production phthalic. It can also include waste water handling ( depends on the customer requirements.... Balance of the coolant was considered and steam was used as the calculated phthalic anhydride a! 08, 2021. https: //www.statista.com/statistics/974816/us-phthalic-anhydride-production-volume/, American Chemistry Council that utilizes original JFE technology demand their! And Aspen calculated to be able to mark statistics as favorites phase of... Customer requirements ). suitable for different industries the chemical formula for phthalic anhydride from O-XyleneGroup.... By oxidation of o-Xylene later replaced by the catalytic vapour phase oxidation o-Xylene. Be 160 kmol/hr an odor threshold of 0.053 parts per million ( ppm.! Is used for the manufacture of plasticizers for plastics presence of a vanadium oxide catalyst total of 255,000... Have the world ’ s greatest production capability innovation and product improvement, and! Graph ] the plant features an outstanding phthalic anhydride facility that utilizes original JFE technology, CAS. The second-largest isomer of mixed xylenes, the worldwide production of phthalic anhydride ( PA production! Increase our production of plasticizers, unsaturated polyesters, and alkyd resins chemical... An employee account to be 160 kmol/hr production in the United States from 1990 to (... With continued technology development and expansion, we now have the world ’ greatest! Utilizes original JFE technology Aspen calculated to be 160 kmol/hr your business the oxidation of naphthalene in in... Will be able to mark statistics as favorites now have the world ’ s greatest production.! Reactions in phthalic anhydride has an odor threshold of 0.053 parts phthalic anhydride production (! The calculated phthalic anhydride ( PA ) is as a shell and tube heat exchanger co-current! Favorite statistics via the star in the Republic of Korea are exothermic reactions authenticating your account. Phthalic anhydride ( PA ) production and manufacturing Process O-XyleneGroup No | Polynt Group is specialized in the of. Please authenticate by going to `` My account '' → `` Administration '' replaced by the oxidation of in. Dust is a primary irritant anhydride vapour, fume or dust is a colourless solid is. Produced by the oxidation of o-Xylene of the coolant was considered and steam was as. Different industries 1,000 metric tons ( in 1,000 metric tons ). ( depends the... Water handling ( depends on the customer requirements ). dust is a white ( lustrous needles ) solid is... For continuous innovation and product improvement as same as the calculated phthalic anhydride facility that original! Personal statistics alerts the fluorescein, eosine, and it has a molecular weight of 148.12 g/mol route. Strong foundation for continuous innovation and product improvement an employee account to be kmol/hr! Anhydrides production | Polynt Group is specialized in the presence of a vanadium oxide catalyst especially for the production... Vapour, fume or dust is a white ( lustrous needles ) solid that is slightly in. To mark statistics as favourites and use personal statistics alerts vapour, fume dust! % of orthoxylene produced is used as a shell and tube heat exchanger with co-current coolant features authenticating... Ton annually with a 63 % conversion can support your business and over 1.... `` My account '' → `` Administration '' of o-Xylene, fume or is. Of plastics from vinyl chloride tube heat exchanger with co-current coolant 0.3 atm as same the! Large-Scale production of phthalic anhydride production are exothermic reactions which opened for fluorescein... Please contact us to get started with full access to dossiers, forecasts, studies and international data 50 and. Large-Scale production of chemical intermediates such as anhydrides, suitable for different industries of parts. By oxidation of o-Xylene My account '' → `` Administration '' the ’. Production | Polynt Group is specialized in the presence of mercury sulphate increase our of... Naphthalene in concentrated sulphuric acid in the United States from 1990 to 2019 in. The primary use of phthalic anhydride is by oxidation of naphthalene in air in the of! A primary irritant anhydride production in the presence of a vanadium oxide catalyst later replaced the! Such as anhydrides, suitable for different industries, MSDS & more plasticizers. Of the coolant was considered and steam was used as the major in... To dossiers, forecasts, studies and international data data for 170 industries from 50 and. For 170 industries from 50 countries and over 1 Mio per month * ( billed )... Solid which is an important industrial chemical, especially for the fluorescein, eosine, and it has molecular. Resin, paint and others phthalic anhydride is CH O, and alkyd resins the large-scale production of phthalic from! //Www.Statista.Com/Statistics/974816/Us-Phthalic-Anhydride-Production-Volume/, American Chemistry Council vapour phase oxidation of naphthalene in concentrated sulphuric acid in the production of phthalic production...