{"id":100594,"date":"2026-05-02T05:40:49","date_gmt":"2026-05-02T03:40:49","guid":{"rendered":"https:\/\/medqmedicalsuppliers.co.za\/?post_type=product&#038;p=100594"},"modified":"2026-05-02T05:40:53","modified_gmt":"2026-05-02T03:40:53","slug":"methyl-orange-ar-100g","status":"publish","type":"product","link":"https:\/\/medqmedicalsuppliers.co.za\/?product=methyl-orange-ar-100g","title":{"rendered":"Methyl Orange AR 100g"},"content":{"rendered":"<p>Methyl Orange AR 100g<\/p>\n<p>Methyl Orange AR 100g is primarily used in laboratory settings as a pH indicator for acid-base titrations and for general pH determinations. <\/p>\n<p>The \ufffd\ufffd\ufffdAR\ufffd\ufffd\ufffd designation indicates it is an \ufffd\ufffd\ufffdAnalytical Reagent\ufffd\ufffd\ufffd grade, signifying a high-purity chemical suitable for laboratory analysis. <\/p>\n<p>Key uses in the laboratory Acid-base titrations Methyl orange is especially useful for titrations involving a strong acid and a weak base because its color change range (pH 3.1\ufffd\ufffd\ufffd4.4) is very sharp and aligns with the equivalence point of such reactions. <\/p>\n<p>Methyl Orange AR 100g<\/p>\n<p>It is unsuitable for titrating a weak acid with a strong base. Color change: Below pH 3.1, the indicator is red.<br \/> Above pH 4.4, it is yellow. At the intermediate pH, it appears orange.Example titrations: It is commonly used for titrating strong acids like hydrochloric acid (HCl) against weak bases such as ammonia ((NH_{3})) or sodium carbonate ((Na_{2}CO_{3})). <\/p>\n<p>Analytical chemistry Bromide ion assay: Methyl orange can be used as a reagent for the colorimetric assay of bromide ions.<\/p>\n<p>Acidity and alkalinity testing: It is used in analytical labs to measure the acidity or alkalinity of various substances.<\/p>\n<p>Water quality testing: In water treatment facilities, methyl orange is used to monitor pH levels in water samples. <\/p>\n<p>Biomedical and histological applications Histological stains: Methyl orange can be used as a component of polychrome histological stain solutions.<\/p>\n<p>Cell and tissue staining: It is sometimes used for staining cells and tissue sections.<\/p>\n<p>Staining pollen tubes: It can act as a counterstain to crystal violet when staining pollen tubes. <\/p>\n<p>Educational demonstrations In school and university settings, methyl orange is a popular teaching tool for chemistry. <\/p>\n<p>Demonstrating pH: Its distinct color change makes it excellent for visually demonstrating acid-base reactions and the concept of pH to students.<\/p>\n<p>Titration technique: It is used to teach titration techniques and help students identify the endpoint of a reaction. <\/p>\n","protected":false},"excerpt":{"rendered":"<p>Methyl Orange AR 100g<\/p>\n<p>\ufffd\ufffd <\/p>\n<p>C\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffdH\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffdN\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffdNaO\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffdS<\/p>\n<p>\ufffd\ufffd <\/p>\n<p>Other names<br \/> Sodium 4-[(4-dimethylamino)phenylazo]benzenesulfonate<br \/> Sodium 4-{[4-(dimethylamino)phenyl]diazenyl}benzene-1-sulfonate<\/p>\n","protected":false},"featured_media":0,"template":"","meta":{"content-type":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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