~4,4'-Dihydroxydiphenyl Sulfone
Product Name 4,4'-Dihydroxydiphenyl Sulfone Molecular Structure 
Other
Name 4,4'-sulfonyldiphenol; Phenol, 4,4‘-sulfonylbis-;
4,4'-Sulfonyldiphenol;
4-(4-hydroxyphenyl)sulfonylphenol;  
CAS No 80-09-1  
Molecular Formula C12H10O4S  
 
Check-Point Specification
 High Pure Product 1 High Pure Product 2 Pure Product Ordinary Product Purified Product Purified Product Crude
Product  -B Crude
Product  -A
Appearance Colorless and needlelike crystal or white powder.
4,4'- Dihydroxydiphenyl sulfone Purity (HPLC) ≥99.9% ≥99.8% ≥99.7% ≥99.5% ≥98% ≥97% ≥96% ≥95%
2,4'- Dihydroxydiphenyl sulfone Purity(HPLC) ≤0.1% ≤0.2% ≤0.3% ≤0.5% ≤2% ≤3% ≤4% ≤4%
Melting Point,℃ 246-250 246-250 246-250 245-250 243-248 243-248 238-245 220-230
Moisture ≤0.1% ≤0.1% ≤0.5% ≤0.5% ≤0.5% ≤0.5% ≤1.0% ≤1.0%
Color 10-20 20-30 100-150 White powder  White powder White to Off-White powder Pink or Brown Powder Pink or Brown Powder
classification by use In the PES, Polycarbonate and Epoxy resin etc. In the manufacture of heat sensitive materials and High-grade auxiliaries synthesis In the manufacture of printing & dyeing auxiliaries and leather tannic agent
Packing：Packed in knitted bag lined with PE bag, 25kgs or above 500kgs big bags etc or according customer's requirements.
Product Usage：It is widely used as the raw material of polycarbonate, epoxy resin, polyether sulfone, Thermal Material and also as the intermediate of dyes, medicine, fire retardant and weave auxilianries etc.