{"id":288618,"date":"2024-10-19T19:34:31","date_gmt":"2024-10-19T19:34:31","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-4427-111983\/"},"modified":"2024-10-25T16:29:22","modified_gmt":"2024-10-25T16:29:22","slug":"bs-4427-111983","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-4427-111983\/","title":{"rendered":"BS 4427-11:1983"},"content":{"rendered":"<p>This Part of BS 4427 describes a method for the separation and the determination of the different phosphate forms in sodium tripolyphosphate (<i>penta<\/i>sodium triphosphate) and sodium pyrophosphate (<i>tetra<\/i>sodium diphosphate) for industrial use.<\/p>\n<p>The procedure specified allows the selective determinations of orthophosphate (Na<sub>2<\/sub>HPO<sub>4<\/sub>), of pyrophosphate (Na<sub>4<\/sub>P<sub>2<\/sub>O<sub>7<\/sub>) and of tripolyphosphate (Na<sub>5<\/sub>P<sub>3<\/sub>O<sub>10<\/sub>), and also the evaluation of the total content of more condensed forms of phosphates in the absence of <i>tetra<\/i>metaphosphates and <i>penta<\/i>metaphosphates.<\/p>\n<blockquote>\n<p>NOTE 1 In practice, <i>tetra<\/i>metaphosphates and <i>penta<\/i>metaphosphates are not usually present in commercial tripolyphosphates and pyrophosphates.<\/p>\n<p>NOTE 2 Although the procedure can separate orthophosphate, its determination is not possible if the content is lower than 0.1 % (<i>m<\/i>\/<i>m<\/i>); in this case its determination should be carried out by the method specified in BS 4427-8.<\/p>\n<p>NOTE 3 The titles of the publications referred to in this Part of this British Standard are listed on the inside back cover.<\/p>\n<\/blockquote>\n<p>Determination of ortho-, pyro- and tripolyphosphates, and higher condensed phosphate forms, in the absence of $7Itetra$7R- and $7Ipenta$7R-metaphosphates.<\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Methods of test for sodium tripolyphosphate (pentasodium triphosphate) and sodium pyrophosphate (tetrasodium pyrophosphate) for industrial use &#8211; Separation by column chromatography and determination of the different phosphate forms<\/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\/bsi\/\"><b>BSI<\/b><\/a><\/td>\n<td>1983<\/td>\n<td>14<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":288626,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[1009,2641],"product_tag":[],"class_list":{"0":"post-288618","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-71-060-50","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/288618","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\/288626"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=288618"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=288618"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=288618"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}