Summary: Alfa Chemistry offers an extensive catalog of building blocks, reagents, catalysts, reference materials, and research chemicals in a wide range of applications. We supply 2-Naphthalenesulfonic acid, 5(or 8)-amino-8(or 5)-[(4-hydroxyphenyl)amino]-, reaction products with sodium sulfide (Na2(Sx)) (CAS:1327-69-1). More information please visit the website: https://www.alfa-chemistry.com/2-naphthalenesulfonic-acid-5-or-8-amino-8-or-5-4-hydroxyphenyl-amino-reaction-products-with-sodium-sulfide-cas-1327-69-1-item-58670.htm