{"id":17090,"date":"2024-10-16T22:18:01","date_gmt":"2024-10-16T22:18:01","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/astm-d5974-2010\/"},"modified":"2024-10-24T12:26:30","modified_gmt":"2024-10-24T12:26:30","slug":"astm-d5974-2010","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/astm\/astm-d5974-2010\/","title":{"rendered":"ASTM-D5974 2010"},"content":{"rendered":"<\/p>\n<p id=\"s00002\">1.1 These test methods cover the determination of the amounts of the individual fatty acids and rosin acids in fractionated tall oil products, using capillary gas chromatographic separation of the volatile methyl esters of these acids.<\/p>\n<p id=\"s00003\">1.2 Four methods for forming the methyl esters, and two methods for determining the amounts of the individual fatty acids and rosin acids are described.<\/p>\n<p id=\"s00004\">1.2.1 The classic method for the formation of methyl esters is through the use of diazomethane, but diazomethane is a hazardous and toxic material, and so is no longer the preferred reagent. The use of diazomethane is detailed in the Appendix. Methyl esters may be formed through the use of tetramethylammonium hydroxide (TMAH), trimethylphenylammonium hydroxide (TMPAH), or N,N-dimethylformamide dimethyl acetal (DMF-DMA).<\/p>\n<p id=\"s00005\">1.2.2 The two methods for determining the amount of the individual fatty acids and rosin acids are the internal standard method, which yields absolute values, and the area percent method, which yields relative values.<\/p>\n<p id=\"s00006\">1.3 <span class=\"italic\">This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.<\/span><\/p>\n<p><h4>PDF Catalog<\/h4>\n<table border=\"1px\" class=\"des-table\">\n<tr>\n<th>PDF Pages<\/th>\n<th>PDF Title<\/th>\n<\/tr>\n<tr>\n<td><b>1<b><\/td>\n<td>Scope <br \/> Referenced Documents <br \/> Significance and Use  <\/td>\n<\/tr>\n<tr>\n<td><b>2<b><\/td>\n<td>Conversion By Means of Tetramethylammonium Hydroxide (TMAH) <br \/> Conversion By Means of Trimethylphenylammonium Hydroxide (TMPAH) <br \/> Conversion by Means of N,N-Dimethylformamide Dimethyl Acetal (DMF-DMA) <br \/> Apparatus  <\/td>\n<\/tr>\n<tr>\n<td><b>3<b><\/td>\n<td>Reagents and Materials <br \/> Procedure <br \/> Set-up of Gas Chromatograph (GC) <br \/> FIG. 1   <\/td>\n<\/tr>\n<tr>\n<td><b>4<b><\/td>\n<td>Analysis <br \/> Calculation <br \/> Report <br \/> Precision and Bias <br \/> \u2014Same as apparatus described in Section  <\/p>\n<p> . <br \/> Reagents and Materials <br \/> Procedure <br \/> Set-up of Gas Chromatograph <br \/> Analysis <br \/> Calculation <br \/> TABLE 1  <\/td>\n<\/tr>\n<tr>\n<td><b>5<b><\/td>\n<td>Report <br \/> Precision and Bias <br \/> Keywords <br \/> X1. CONVERSION BY MEANS OF DIAZOMETHANE <br \/> X1.1 Apparatus <br \/> X1.2 Reagents and Materials <br \/> X1.3 Procedure <br \/> TABLE 2  <\/td>\n<\/tr>\n<tr>\n<td><b>6<b><\/td>\n<td>FIG. X1.1   <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"<p><b>D5974-00(2010) Standard Test Methods for Fatty and Rosin Acids in Tall Oil Fractionation Products by Capillary Gas Chromatography<\/b><\/p>\n<table class=\"shortdes-table\" style=\"width: 100%\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td>Published By<\/td>\n<td>Publication Date<\/td>\n<td>Number of Pages<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/pdfstandards.shop\/product-category\/publishers\/astm\/\"><b>ASTM<\/b><\/a><\/td>\n<td>2010<\/td>\n<td>6<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":17091,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[956,984,2637],"product_tag":[],"class_list":{"0":"post-17090","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-67-080-10","7":"product_cat-67-200-10","8":"product_cat-astm","10":"first","11":"instock","12":"sold-individually","13":"shipping-taxable","14":"purchasable","15":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/17090","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/17091"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=17090"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=17090"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=17090"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}