{"id":69664,"date":"2026-05-02T06:00:59","date_gmt":"2026-05-02T04:00:59","guid":{"rendered":"https:\/\/chestxray.co.za\/?post_type=product&#038;p=69664"},"modified":"2026-05-02T06:01:06","modified_gmt":"2026-05-02T04:01:06","slug":"methyl-orange-ar-25g","status":"publish","type":"product","link":"https:\/\/chestxray.co.za\/?product=methyl-orange-ar-25g","title":{"rendered":"Methyl Orange AR 25g"},"content":{"rendered":"<p>Methyl Orange AR 25g<\/p>\n<p>Methyl orange AR 25g is most commonly used as a pH indicator in analytical chemistry and for educational purposes. <\/p>\n<p>The \ufffd\ufffd\ufffdAR\ufffd\ufffd\ufffd designation means it is an \ufffd\ufffd\ufffdAnalytical Reagent\ufffd\ufffd\ufffd grade, indicating a high level of purity suitable for laboratory testing. <\/p>\n<p>Methyl Orange AR 25g Primary lab uses<br \/> Acid-base titrations: Methyl orange is particularly effective for titrations of strong acids and weak bases.<br \/> Its color change from red to yellow occurs sharply in the acidic pH range of 3.1 to 4.4, providing a clear endpoint.<br \/> This makes it useful for accurately determining the concentration of an unknown solution.<\/p>\n<p>pH indicator: In general pH testing, it indicates a specific acidic range. It is yellow in alkaline and neutral solutions, orange in the transition phase, and red in strong acidic solutions.<\/p>\n<p>Water quality testing: It is used to test the pH of water samples, especially in industrial wastewater or effluent analysis where acidic conditions may be present.<br \/> Soil testing: Methyl orange can be used in soil chemistry to assess the pH of soil samples.<br \/> Other applications<br \/> Biological staining: As an azo dye, methyl orange is sometimes used for staining cells and tissue sections in biological and histological studies.<br \/> Educational demonstrations: Its distinct and reliable color change makes it a popular choice for classroom demonstrations and student experiments to teach acid-base concepts.<br \/> Handling precautions<br \/> As with all lab chemicals, standard safety precautions should be followed when handling methyl orange. It can stain skin and clothes, and there is a potential risk of it causing irritation if ingested, inhaled, or exposed to the skin or eyes.<\/p>\n<p>Methyl Orange AR 25g<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Methyl Orange AR 25g<\/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":[],"product_brand":[],"product_cat":[24937],"product_tag":[20612],"class_list":["post-69664","product","type-product","status-publish","product_cat-other-miscellaneous-other-disposable-consumables-items","product_tag-methyl-orange-ar-25g","first","instock","shipping-taxable","purchasable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/chestxray.co.za\/index.php?rest_route=\/wp\/v2\/product\/69664","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=69664"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/chestxray.co.za\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_brand&post=69664"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/chestxray.co.za\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_cat&post=69664"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/chestxray.co.za\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_tag&post=69664"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}