﻿{"id":20966,"date":"2025-10-27T17:19:41","date_gmt":"2025-10-27T10:19:41","guid":{"rendered":"https:\/\/nhathuocngocanh.com\/bp\/?p=20966"},"modified":"2025-11-15T17:14:41","modified_gmt":"2025-11-15T10:14:41","slug":"selenium-sulfide-scalp-application","status":"publish","type":"post","link":"https:\/\/nhathuocngocanh.com\/bp\/selenium-sulfide-scalp-application\/","title":{"rendered":"Selenium Sulfide Scalp Application"},"content":{"rendered":"<p>Selenium Sulphide Scalp Application<\/p>\n<p>Selenium Sulfide Application<\/p>\n<p>Selenium Sulfide Cutaneous Suspension<\/p>\n<h2>DEFINITION<\/h2>\n<p>Selenium Sulfide Scalp Application is a cutaneous suspension of Selenium Sulfide in a suitable liquid basis.<\/p>\n<p>The scalp application complies with the requirements stated under Liquids for Cutaneous Application and with the following requirements.<\/p>\n<p><strong>Content of selenium sulfide, SeS<sub>2<\/sub><\/strong><\/p>\n<p>90.0 to 110.0% of the stated amount.<\/p>\n<h2>IDENTIFICATION<\/h2>\n<p>A. Gently boil a quantity containing 50 mg of Selenium Sulfide with 5 mL of nitric acid for 1 hour, dilute to 50 mL with water and filter. To 5 mL of the filtrate add 10 mL of water and 5 g of urea, boil, cool and add 2 mL of dilute potassium iodide solution. A yellow to orange colour is produced, which darkens rapidly on standing.<\/p>\n<p>B. Allow the coloured solution obtained in test A to stand for 10 minutes and filter through kieselguhr. The filtrate yields the reactions characteristic of sulfates, Appendix VI.<\/p>\n<h2>TESTS<\/h2>\n<h3>Acidity<\/h3>\n<p>pH, 4.0 to 5.5, Appendix V L.<\/p>\n<h2>ASSAY<\/h2>\n<p>To a quantity containing 0.15 g of Selenium Sulfide add 25 mL of fuming nitric acid, heat on a water bath for 2 hours, cool and dilute to 250 mL with water. To 25 mL of the solution add 10 g of urea and 25 mL of water, boil, cool, add 10 mL of dilute potassium iodide solution and 10 mL of chloroform and titrate immediately with 0.05M sodium thiosulfate VS using<br \/>\nstarch mucilage, added towards the end of the titration, as indicator. Shake vigorously as the end point is approached.<\/p>\n<p>Each mL of 0.05M sodium thiosulfate VS is equivalent to 1.789 mg of SeS<sub>2<\/sub>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Selenium Sulphide Scalp Application Selenium Sulfide Application Selenium Sulfide Cutaneous Suspension DEFINITION Selenium Sulfide Scalp Application is a cutaneous suspension of Selenium Sulfide in a suitable liquid basis. The scalp application complies with the requirements stated under Liquids for Cutaneous Application and with the following requirements. Content of selenium sulfide, SeS2 90.0 to 110.0% of&#8230;<\/p>\n","protected":false},"author":4,"featured_media":20975,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[175],"tags":[],"class_list":["post-20966","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-formulated-preparations-specific-monographs"],"acf":[],"_links":{"self":[{"href":"https:\/\/nhathuocngocanh.com\/bp\/wp-json\/wp\/v2\/posts\/20966","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nhathuocngocanh.com\/bp\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nhathuocngocanh.com\/bp\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nhathuocngocanh.com\/bp\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/nhathuocngocanh.com\/bp\/wp-json\/wp\/v2\/comments?post=20966"}],"version-history":[{"count":2,"href":"https:\/\/nhathuocngocanh.com\/bp\/wp-json\/wp\/v2\/posts\/20966\/revisions"}],"predecessor-version":[{"id":20977,"href":"https:\/\/nhathuocngocanh.com\/bp\/wp-json\/wp\/v2\/posts\/20966\/revisions\/20977"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nhathuocngocanh.com\/bp\/wp-json\/wp\/v2\/media\/20975"}],"wp:attachment":[{"href":"https:\/\/nhathuocngocanh.com\/bp\/wp-json\/wp\/v2\/media?parent=20966"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nhathuocngocanh.com\/bp\/wp-json\/wp\/v2\/categories?post=20966"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nhathuocngocanh.com\/bp\/wp-json\/wp\/v2\/tags?post=20966"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}