4,4'-Dihydroxydiphenyl Sulfone

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