{"id":78040,"date":"2026-03-15T22:17:24","date_gmt":"2026-03-15T20:17:24","guid":{"rendered":"https:\/\/medqmedicalsuppliers.co.za\/?post_type=product&#038;p=78040"},"modified":"2026-03-15T22:17:31","modified_gmt":"2026-03-15T20:17:31","slug":"methylene-blue-zinc-free","status":"publish","type":"product","link":"https:\/\/medqmedicalsuppliers.co.za\/?product=methylene-blue-zinc-free","title":{"rendered":"Methylene Blue (Zinc Free)"},"content":{"rendered":"<p>Methylene Blue (Zinc Free) is a laboratory-grade dye that serves as both a biological stain and a redox indicator. Its zinc-free formulation ensures greater purity, making it suitable for sensitive applications such as staining cells and tissues in microbiology and histology, as well as for use in redox reactions in analytical chemistry.<br \/>\nFormula: C16H18ClN3S, Molar mass: 319,85 g\/mol, Density: 1.0 g\/mL at 20 \u00b0C<br \/>\n\u2022 Chemical Code: M6450<br \/>\n\u2022 Chemical Grade: ACS Reagent<br \/>\n\u2022 Chemical Formula: C\u2081\u2086H\u2081\u2088ClN\u2083S.xH\u2082O<br \/>\n\u2022 Chemical Weight: 319,85 g\/mol<br \/>\n\u2022 CAS No: 122965-43-9<br \/>\n\u2022 Chemical Synonyms: Tetramethylthionine Chloride, 3,7-bis(Dimethylamino)Phenazathionium Chloride, Basic Blue 9<br \/>\n\u2022 Appearance: Dark Green Crystals with Bronze lustre, or Crystalline Powder<br \/>\n\u2022 Odour: Odourless<br \/>\n\u2022 pH: No Data Available<br \/>\n\u2022 Melting Point: No Data Available<br \/>\n\u2022 Boiling Point: No Data Available<br \/>\n\u2022 Flash Point: No Data Available<br \/>\n\u2022 Water solubility: Soluble<\/p>\n<p>\u2022 Laboratory-grade dye<br \/>\n\u2022 Biological stain and redox indicator<br \/>\n\u2022 Zinc-free formulation for greater purity<br \/>\n\u2022 Suitable for microbiology and histology<br \/>\n\u2022 Used in analytical chemistry<br \/>\n\u2022 Size: [&#8217;25g&#8217;, &#8216;100g&#8217;]<br \/>\n\u2022 Pack Size: [&#8216;Single Item&#8217;, &#8216;Box of 4&#8217;]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Methylene Blue (Zinc Free) is a laboratory-grade dye that serves as both a biological stain and a redox indicator.<\/p>\n","protected":false},"featured_media":78054,"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 center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}}},"product_brand":[],"product_cat":[13544],"product_tag":[13551],"class_list":{"0":"post-78040","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-powders-dyes","7":"product_tag-methylene-blue-zinc-free","8":"desktop-align-center","9":"tablet-align-center","10":"mobile-align-center","12":"first","13":"instock","14":"shipping-taxable","15":"purchasable","16":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/medqmedicalsuppliers.co.za\/index.php?rest_route=\/wp\/v2\/product\/78040","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/medqmedicalsuppliers.co.za\/index.php?rest_route=\/wp\/v2\/product"}],"about":[{"href":"https:\/\/medqmedicalsuppliers.co.za\/index.php?rest_route=\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/medqmedicalsuppliers.co.za\/index.php?rest_route=\/wp\/v2\/media\/78054"}],"wp:attachment":[{"href":"https:\/\/medqmedicalsuppliers.co.za\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=78040"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/medqmedicalsuppliers.co.za\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_brand&post=78040"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/medqmedicalsuppliers.co.za\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_cat&post=78040"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/medqmedicalsuppliers.co.za\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_tag&post=78040"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}