{"id":591320,"date":"2024-11-05T21:18:49","date_gmt":"2024-11-05T21:18:49","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/iso-1388-81981\/"},"modified":"2024-11-05T21:18:49","modified_gmt":"2024-11-05T21:18:49","slug":"iso-1388-81981","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/iso\/iso-1388-81981\/","title":{"rendered":"ISO 1388-8:1981"},"content":{"rendered":"<p>The principle is based on the conversion of the methanol present in a test portion to formaldehyde by oxidation with a solution of potassium permanganate in phosphoric acid. Reaction of the formaldehyde formed with Schiff reagent. Visual comparison of the colour obtained with the colours of standard colorimetric solutions containing known quantities of formaldehyde. &#8211; International Standards ISO 1388\/1 to ISO 1377\/12 cancel and replace ISO Recommendation R 1388-1970 of which they constitute a technical revision.<\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Ethanol for industrial use \u2014 Methods of test \u2014 Part 8: Determination of methanol content (methanol contents between 0,10 and 1,50 % (V\/V)) \u2014 Visual colorimetric method<\/b><\/p>\n<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\/iso\/\"><b>ISO<\/b><\/a><\/td>\n<td>1981-11<\/td>\n<td>5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":0,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[1019,2634],"product_tag":[],"class_list":{"0":"post-591320","1":"product","2":"type-product","3":"status-publish","5":"product_cat-71-080-60","6":"product_cat-iso","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/591320","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:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=591320"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=591320"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=591320"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}