{"product_id":"disodium-2-naphthol-3-6-disulfonate-2klp-2klp","title":"Disodium 2-naphthol-3,6-disulfonate, 500 g","description":"\u003cp\u003eDisodium 2-naphthol-3,6-disulfonate is a sulfonated naphthol salt for laboratory and process chemistry applications. It is identified by CAS number 135-51-3, empirical formula C₁₀H₆Na₂O₇S₂ and a molar mass of 348,26 g\/mol, corresponding to the disodium salt of 2-naphthol bearing sulfonate groups at the 3- and 6-positions. This ionic aromatic structure is relevant where water-compatible naphthol derivatives, dye intermediates or sulfonated coupling components are required in chemical and biochemical workflows. The product is Molecular mass and formula data support accurate preparation of solutions and stoichiometric calculations. Positioned in the chemicals and biochemicals offering from manufacturer Carl ROTH, the salt serves laboratories that need a defined disulfonated naphthol reagent without additional grade claims beyond the manufacturer description. Use standard laboratory practice for sulfonated organics, consult the safety documentation before handling, and integrate the stated molar mass into your weighing and dilution protocols.\u003c\/p\u003e\n\u003c!-- lx-pdp-inline --\u003e\n\u003cp\u003eThis article is part of \u003ca href=\"\/en-be\/collections\/inorganic-salts\"\u003eInorganic salts\u003c\/a\u003e, in \u003ca href=\"\/en-be\/collections\/inorganic-chemicals\"\u003eInorganic chemicals\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eColour: off-white to brown to gray\u003c\/li\u003e\n\u003cli\u003eForm: powder\u003c\/li\u003e\n\u003cli\u003ePurity (HPLC): ≥97 %\u003c\/li\u003e\n\u003cli\u003eAssay (titr.): ≥80 %\u003c\/li\u003e\n\u003cli\u003e¹H-NMR Spectrum: complies\u003c\/li\u003e\n\u003cli\u003eCAS number: 135-51-3\u003c\/li\u003e\n\u003cli\u003ePack sizes: 500 g, 1 kg, 2 kg\u003c\/li\u003e\n\u003cli\u003eEmpirical formula: C₁₀H₆Na₂O₇S₂\u003c\/li\u003e\n\u003cli\u003eMolar mass: 348,26 g\/mol\u003c\/li\u003e\n\u003cli\u003eWeight: 0,610 kg\u003c\/li\u003e\n\u003cli class=\"lx-tis-li\"\u003eTechnical Information Sheet: \u003ca class=\"sds-link\" href=\"https:\/\/api.carlroth.com\/medias\/SPEZ-2KLP-EN.pdf?context=bWFzdGVyfHNwZWNpZmljYXRpb25zfDEwMjcyNHxhcHBsaWNhdGlvbi9wZGZ8YURsa0wyZ3dNeTg1TWpVME5EY3hOekk1TVRneUwxTlFSVnBmTWt0TVVGOUZUaTV3WkdZfDEzZjI1YWQzMzA0ODBiMTcxZTljYmE2MDM3MDJhMTJkZWRiZDNjODVhOTBkMzFjOGEyOTgyMDViZmZhNTcwNjY\" target=\"_blank\" rel=\"noopener noreferrer\" style=\"display:inline;vertical-align:middle\" title=\"Technical sheet PDF\" aria-label=\"Technical sheet PDF\"\u003e\u003cimg class=\"sds-icon\" src=\"https:\/\/img.icons8.com\/color\/48\/pdf.png\" alt=\"PDF\" width=\"18\" height=\"18\" style=\"width:18px;height:18px;max-width:18px;margin:0;padding:0;display:inline;vertical-align:middle;border:0;\"\u003e\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli class=\"lx-tis-li\"\u003eSafety Data Sheet: \u003ca class=\"sds-link\" href=\"https:\/\/api.carlroth.com\/medias\/SDB-2KLP-DE-EN.pdf?context=bWFzdGVyfHNlY3VyaXR5RGF0YXNoZWV0c3wyMzk3NDR8YXBwbGljYXRpb24vcGRmfGFEUmxMMmhpWmk4NU1qQTJORFkxTVRBeE9EVTBMMU5FUWw4eVMweFFYMFJGWDBWT0xuQmtaZ3w3MmZkYzFkN2IzMzI5N2E4MmRjMmY4YTZkNGU1M2U3NzYwNWM1ZGEwODAyMzI3Y2Q3ZWNiOWU2YWZhNWM0ZGQ0\" target=\"_blank\" rel=\"noopener noreferrer\" style=\"display:inline;vertical-align:middle\" title=\"SDS PDF\" aria-label=\"SDS PDF\"\u003e\u003cimg class=\"sds-icon\" src=\"https:\/\/img.icons8.com\/color\/48\/pdf.png\" alt=\"PDF\" width=\"18\" height=\"18\" style=\"width:18px;height:18px;max-width:18px;margin:0;padding:0;display:inline;vertical-align:middle;border:0;\"\u003e\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Carl Roth","offers":[{"title":"500 g \/ 1 piece","offer_id":56137309225292,"sku":"2KLP.3","price":263.4,"currency_code":"EUR","in_stock":true},{"title":"500 g \/ 6+ pieces","offer_id":56137309258060,"sku":"2KLP.3","price":250.23,"currency_code":"EUR","in_stock":true},{"title":"500 g \/ 24+ pieces","offer_id":56137309290828,"sku":"2KLP.3","price":237.06,"currency_code":"EUR","in_stock":true},{"title":"1 kg \/ 1 piece","offer_id":56137309323596,"sku":"2KLP.4","price":504.2,"currency_code":"EUR","in_stock":true},{"title":"1 kg \/ 6+ pieces","offer_id":56137309356364,"sku":"2KLP.4","price":504.2,"currency_code":"EUR","in_stock":true},{"title":"1 kg \/ 24+ pieces","offer_id":56137309389132,"sku":"2KLP.4","price":504.2,"currency_code":"EUR","in_stock":true},{"title":"2 kg \/ 1 piece","offer_id":56137309421900,"sku":"2KLP.5","price":966.45,"currency_code":"EUR","in_stock":true},{"title":"2 kg \/ 6+ pieces","offer_id":56137309454668,"sku":"2KLP.5","price":918.13,"currency_code":"EUR","in_stock":true},{"title":"2 kg \/ 24+ pieces","offer_id":56137309487436,"sku":"2KLP.5","price":869.81,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0955\/4827\/7068\/files\/1000Wx1000H-2KLP-SF.jpg?v=1766417874","url":"https:\/\/www.luminixhealth.com\/en-be\/products\/disodium-2-naphthol-3-6-disulfonate-2klp-2klp","provider":"Luminix Health","version":"1.0","type":"link"}