{"id":8085,"date":"2025-10-02T17:15:57","date_gmt":"2025-10-02T10:15:57","guid":{"rendered":"https:\/\/nhathuocngocanh.com\/bp\/?p=8085"},"modified":"2025-10-02T17:15:57","modified_gmt":"2025-10-02T10:15:57","slug":"calcium-hydroxide-solution","status":"publish","type":"post","link":"https:\/\/nhathuocngocanh.com\/bp\/calcium-hydroxide-solution\/","title":{"rendered":"Calcium Hydroxide Solution"},"content":{"rendered":"<p>Edition: BP 2025 (Ph. Eur. 11.6 update)<\/p>\n<p>General Notices<\/p>\n<p>Lime Water<\/p>\n<h2>DEFINITION<\/h2>\n<p>Calcium Hydroxide<\/p>\n<p>Purified Water, freshly boiled and cooled<\/p>\n<p><b>Extemporaneous preparation<\/b><\/p>\n<p>The following directions apply.<\/p>\n<p>Shake together thoroughly and repeatedly; allow to stand until clear. Siphon off the clear solution as required.<\/p>\n<p><b>Content of calcium hydroxide, <\/b><strong>Ca(OH)<sub>2<\/sub><\/strong><\/p>\n<p>Not less than 0.15% w\/v.<\/p>\n<h2>CHARACTERISTICS<\/h2>\n<p>A colourless liquid. It absorbs carbon dioxide from the air, a film of calcium carbonate being formed on the surface of the liquid. It becomes turbid when boiled and clear again on cooling.<\/p>\n<h2>IDENTIFICATION<\/h2>\n<p>Yields the reactions characteristic of calcium salts, Appendix VI.<\/p>\n<h2>ASSAY<\/h2>\n<p>Titrate 25 mL with 0.1M hydrochloric acid VS using phenolphthalein solution R1 as indicator. Each mL of 0.1M hydrochloric acid VS is equivalent to 3.705 mg of Ca(OH)<sub>2<\/sub>.<\/p>\n<h2>STORAGE<\/h2>\n<p>Calcium Hydroxide Solution should be kept in a well-filled container.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Edition: BP 2025 (Ph. Eur. 11.6 update) General Notices Lime Water DEFINITION Calcium Hydroxide Purified Water, freshly boiled and cooled Extemporaneous preparation The following directions apply. Shake together thoroughly and repeatedly; allow to stand until clear. Siphon off the clear solution as required. Content of calcium hydroxide, Ca(OH)2 Not less than 0.15% w\/v. CHARACTERISTICS A&#8230;<\/p>\n","protected":false},"author":5,"featured_media":8087,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[175],"tags":[],"class_list":["post-8085","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\/8085","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\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/nhathuocngocanh.com\/bp\/wp-json\/wp\/v2\/comments?post=8085"}],"version-history":[{"count":2,"href":"https:\/\/nhathuocngocanh.com\/bp\/wp-json\/wp\/v2\/posts\/8085\/revisions"}],"predecessor-version":[{"id":8100,"href":"https:\/\/nhathuocngocanh.com\/bp\/wp-json\/wp\/v2\/posts\/8085\/revisions\/8100"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nhathuocngocanh.com\/bp\/wp-json\/wp\/v2\/media\/8087"}],"wp:attachment":[{"href":"https:\/\/nhathuocngocanh.com\/bp\/wp-json\/wp\/v2\/media?parent=8085"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nhathuocngocanh.com\/bp\/wp-json\/wp\/v2\/categories?post=8085"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nhathuocngocanh.com\/bp\/wp-json\/wp\/v2\/tags?post=8085"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}