Pre F. C. Acid   Product Details Chemical Name 4 - Nitro 4' - Amino Diphenyl Amine 2 - Sulfonic Acid ( Pre. F.C. Acid) Chemical Formula C12H11N3O5S Molecular Formula CAS No. 91-29-2 Specification Isomer by HPLC :0.5 % Max. PPDA1.0 % Max. PNCBOSA Molecular Weight 309 Typical impuriy Insoluble in Caustic:0.5 % Max. Purity by DIAZO 60.00% End Use DYESTUFF & DYESTUFF INTERMEDIATES Main Page | Home Page | Introduction | Code of Conduct | Goals | Financials | Our Associate | Product Profile | Product List Enduse Wise | New API Division | Custom Manufacturing | QC and RD | Environment | Product Search | What's New Enquiry Form | Members Login | Contact Us | Dyes | Bulk Pharmaceuticals