{"id":68120,"date":"2026-05-02T05:40:27","date_gmt":"2026-05-02T03:40:27","guid":{"rendered":"https:\/\/chestxray.co.za\/?post_type=product&#038;p=68120"},"modified":"2026-05-02T05:40:34","modified_gmt":"2026-05-02T03:40:34","slug":"methyl-orange-ar-100g","status":"publish","type":"product","link":"https:\/\/chestxray.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":""},"product_brand":[],"product_cat":[4114],"product_tag":[18831],"class_list":{"0":"post-68120","1":"product","2":"type-product","3":"status-publish","5":"product_cat-laboratory-chemicals","6":"product_tag-methyl-orange-ar-100g","8":"first","9":"instock","10":"shipping-taxable","11":"purchasable","12":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/chestxray.co.za\/index.php?rest_route=\/wp\/v2\/product\/68120","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/chestxray.co.za\/index.php?rest_route=\/wp\/v2\/product"}],"about":[{"href":"https:\/\/chestxray.co.za\/index.php?rest_route=\/wp\/v2\/types\/product"}],"wp:attachment":[{"href":"https:\/\/chestxray.co.za\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=68120"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/chestxray.co.za\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_brand&post=68120"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/chestxray.co.za\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_cat&post=68120"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/chestxray.co.za\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_tag&post=68120"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}