CAS NO. 80-08-0 Category Intermediates for advanced composite materials Chemical Name 4,4'-Diamino Diphenyl Sulfone Synonyms 4-Aminophenyl sulfone，Bis(4-aminophenyl) sulfone Molecular Formula C12H12N2O2S Molecular weight 248.30 Standard Company standard or as customers specification for new design Packing 25kg fibre drums, 25kg/bag or  as per requirements Specifications Appearance: white crystalline powder Purity: ≥99.5% MIN(HPLC) Melting point:175 - 181℃ Loss on drying: ≤0.2% PH value: 6.5 - 7.5 Application 1. for polysulfone amide and other polymers2. as epoxy hardener3. as adhesives 4. as gas chromatography 5. for anti-leprosy drug The above usages mainly involve in aerospace industry, laminates industry, insulated materials, weaving machines and pharmaceutical Recommend product 4,4′-Dichlorodiphenyl Sulfone CAS 80-07-9 Bis(4-Chlorophenyl) Sulphone Powder ITEM OF TEST SPECIFICATION RESULTS APPEARANCE WHITE TO ALMOST WHITE CRYSTALLINE POWDER CONFORM                       PURITY ≥99.0% (HPLC) 99.51%  MELTING POINT 175-181℃ 178.2-178.8℃  IRON ION ≤0.5mg/kg  CONFORM   IMPURITY ≥0.5mm 0  CONFORM 0.5mm-0.2mm ≤20            CONFORM ≤0.2mm ≤30  CONFORM LOSS ON DRYING ≤0.2% 0.09% COLOUR OF SOLUTION APHA NO: ≤40 20