4,4'-Dihydroxydiphenyl sulfone (BPS, Bisphenol S)

English Name: SDP; 4,4'-Sulfonyldiphenol; 4,4'-Dihydroxydiphenylsulfone; Bis(4-hydroxyphenyl) sulfone; Bisphenol S
Chinese Name: 4,4'-Dihydroxydiphenyl sulfone; Bisphenol S; 4,4'-Sulfonyldiphenol

Molecular Formula: C₁₂H₁₀O₄S

Molecular Weight: 250.2704
CAS Number: 80-09-1
C12H10O4S=250.27
Grade: CP
Purity: ≥99.5%
Melting Point: ≥245°C
Ethanol Solubility Test: Pass
Residue on Ignition: ≤0.1%
Appearance: White or nearly white needle-like crystals.

Uses:

BPS, known as 4,4'-dihydroxydiphenyl sulfone, is a white needle-like crystal and an excellent color developer. As a substitute for bisphenol A, it is mainly used in high-sensitivity thermal recording paper (such as fax paper), color photographic materials, and liquid crystal materials. As a thermal recording material and color photographic developer, BPS features high sensitivity, excellent stability, clear imaging, and resistance to water, oil, light, heat, and plasticizers. It is widely used in the field of thermal recording paper (e.g., thermal paper, electrocardiogram paper, fax paper, etc.). Additionally, BPS can be used as an intermediate in the synthesis of pesticides, dyes, polyesters, epoxy resins, etc. It is also employed as an additive in plating solutions, a leather tanning agent, a dye dispersant, and a color fixative. With a large market demand and diverse applications, BPS has broad prospects for future use.