{"id":11054,"date":"2022-11-17T05:43:14","date_gmt":"2022-11-16T21:43:14","guid":{"rendered":"https:\/\/www.pyrazoles-derivatives.com\/?p=11054"},"modified":"2022-11-17T05:43:14","modified_gmt":"2022-11-16T21:43:14","slug":"uzoukwu-b-a-s-team-published-research-in-journal-of-the-national-science-council-of-sri-lanka-in-1993-06-30-cas-1691-93-6-2","status":"publish","type":"post","link":"https:\/\/www.pyrazoles-derivatives.com\/?p=11054","title":{"rendered":"Uzoukwu, B. A.&#8217;s team published research in Journal of the National Science Council of Sri Lanka  in 1993-06-30 | CAS: 1691-93-6"},"content":{"rendered":"<p>Uzoukwu, B. A. published the artcile<b><i>1-Phenyl-3-methyl-4-trifluoroacetyl-5-pyrazolone (HPMTFP) as an extraction and spectrophotometric reagent for vanadium (V)<\/i><\/b>,  <a href=\"https:\/\/www.ambeed.com\/products\/1691-93-6.html\">Recommanded Product: 5-Methyl-2-phenyl-4-(2,2,2-trifluoroacetyl)-1H-pyrazol-3(2H)-one<\/a>,  the main research area is  vanadium determination extraction spectrophotometry; phenylmethyltrifluoroacetylpyrazolone reagent vanadium determination.<\/p>\n<p>A rapid and efficient method for the determination of a large quantity of V(V) in an aqueous medium using HPMTFP is described. The percentage extraction as a function of pH of aqueous medium is reported and quant. extraction of V(V) occurs in the pH range of 1.7-2.3. The properties of the color of the extracted complex species with respect to pH of solution, various solvents, time and presence of diverse ions are reported. Beer&#8217;s law is valid up to 100 ppm of V (V) (\u03b5 = 1.1 \u00d7 102 L mol-1 cm-1).<\/p>\n<p>Journal of the National Science Council of Sri Lanka published new progress about vanadium determination extraction spectrophotometry; phenylmethyltrifluoroacetylpyrazolone reagent vanadium determination. 1691-93-6 belongs to class pyrazoles-derivatives, name is 5-Methyl-2-phenyl-4-(2,2,2-trifluoroacetyl)-1H-pyrazol-3(2H)-one, and the molecular formula is C12H9F3N2O2, <a href=\"https:\/\/www.ambeed.com\/products\/1691-93-6.html\">Recommanded Product: 5-Methyl-2-phenyl-4-(2,2,2-trifluoroacetyl)-1H-pyrazol-3(2H)-one<\/a>.<\/p>\n<p>Referemce:<br \/><a href=\"https:\/\/en.wikipedia.org\/wiki\/Pyrazole\">Pyrazole &#8211; Wikipedia<\/a>,<br \/><a href=\"https:\/\/www.sciencedirect.com\/topics\/chemistry\/pyrazoles\">Pyrazoles &#8211; an overview | ScienceDirect Topics<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Journal of the National Science Council of Sri Lanka published new progress about vanadium determination extraction spectrophotometry; phenylmethyltrifluoroacetylpyrazolone reagent vanadium determination. 1691-93-6 belongs to class pyrazoles-derivatives, name is 5-Methyl-2-phenyl-4-(2,2,2-trifluoroacetyl)-1H-pyrazol-3(2H)-one, and the molecular formula is C12H9F3N2O2, <a href=\"https:\/\/www.ambeed.com\/products\/1691-93-6.html\">Recommanded Product: 5-Methyl-2-phenyl-4-(2,2,2-trifluoroacetyl)-1H-pyrazol-3(2H)-one<\/a>.<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[775,131],"tags":[740],"class_list":["post-11054","post","type-post","status-publish","format-standard","hentry","category-1691-93-6","category-pyrazoles-derivatives","tag-m-w250-300"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Uzoukwu, B. A.&#039;s team published research in Journal of the National Science Council of Sri Lanka in 1993-06-30 | CAS: 1691-93-6 | pyrazoles-derivatives<\/title>\n<meta name=\"description\" content=\"Uzoukwu, B. A. published the artcile1-Phenyl-3-methyl-4-trifluoroacetyl-5-pyrazolone (HPMTFP) as an extraction and spectrophotometric reagent for vanadium (V), Recommanded Product: 5-Methyl-2-phenyl-4-(2,2,2-trifluoroacetyl)-1H-pyrazol-3(2H)-one, the main research area is vanadium determination extraction spectrophotometry; phenylmethyltrifluoroacetylpyrazolone reagent vanadium determination.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.pyrazoles-derivatives.com\/?p=11054\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Uzoukwu, B. 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A. published the artcile1-Phenyl-3-methyl-4-trifluoroacetyl-5-pyrazolone (HPMTFP) as an extraction and spectrophotometric reagent for vanadium (V), Recommanded Product: 5-Methyl-2-phenyl-4-(2,2,2-trifluoroacetyl)-1H-pyrazol-3(2H)-one, the main research area is vanadium determination extraction spectrophotometry; phenylmethyltrifluoroacetylpyrazolone reagent vanadium determination.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.pyrazoles-derivatives.com\/?p=11054\" \/>\n<meta property=\"og:site_name\" content=\"pyrazoles-derivatives\" \/>\n<meta property=\"article:published_time\" content=\"2022-11-16T21:43:14+00:00\" \/>\n<meta name=\"author\" content=\"Jessica.F\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Jessica.F\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.pyrazoles-derivatives.com\/?p=11054\",\"url\":\"https:\/\/www.pyrazoles-derivatives.com\/?p=11054\",\"name\":\"Uzoukwu, B. 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A. published the artcile1-Phenyl-3-methyl-4-trifluoroacetyl-5-pyrazolone (HPMTFP) as an extraction and spectrophotometric reagent for vanadium (V), Recommanded Product: 5-Methyl-2-phenyl-4-(2,2,2-trifluoroacetyl)-1H-pyrazol-3(2H)-one, the main research area is vanadium determination extraction spectrophotometry; phenylmethyltrifluoroacetylpyrazolone reagent vanadium determination.\",\"breadcrumb\":{\"@id\":\"https:\/\/www.pyrazoles-derivatives.com\/?p=11054#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.pyrazoles-derivatives.com\/?p=11054\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.pyrazoles-derivatives.com\/?p=11054#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u9996\u9875\",\"item\":\"https:\/\/www.pyrazoles-derivatives.com\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Uzoukwu, B. 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A. published the artcile1-Phenyl-3-methyl-4-trifluoroacetyl-5-pyrazolone (HPMTFP) as an extraction and spectrophotometric reagent for vanadium (V), Recommanded Product: 5-Methyl-2-phenyl-4-(2,2,2-trifluoroacetyl)-1H-pyrazol-3(2H)-one, the main research area is vanadium determination extraction spectrophotometry; phenylmethyltrifluoroacetylpyrazolone reagent vanadium determination.","og_url":"https:\/\/www.pyrazoles-derivatives.com\/?p=11054","og_site_name":"pyrazoles-derivatives","article_published_time":"2022-11-16T21:43:14+00:00","author":"Jessica.F","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Jessica.F","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.pyrazoles-derivatives.com\/?p=11054","url":"https:\/\/www.pyrazoles-derivatives.com\/?p=11054","name":"Uzoukwu, B. 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