Description

Sulfurous Acid, Disodium Salt, Polymer With Formaldehyde And 4,4-Sulfonylbisphenol CAS NO 37372-10-4 is a specialized polymeric sulfonate compound. This engineered material is valued for its unique combination of thermal stability and ionic functionality derived from its sulfonyl and sulfonate groups. It serves as a critical performance additive and intermediate in advanced material synthesis for industries requiring high-temperature resistance and specific chemical reactivity. Key users include manufacturers in the polymer, specialty chemical, and industrial coating sectors.

Application

• High-Performance Polymer Modification: Acts as a comonomer or additive to enhance thermal stability, flame retardancy, and ionic conductivity in engineering plastics and polyelectrolytes.
• Specialty Ion-Exchange Resins: Serves as a key component in the synthesis of resins with high selectivity and stability for water treatment and chemical separation processes.
• Advanced Coating Systems: Utilized as a cross-linking agent or functional additive to improve adhesion, chemical resistance, and durability in industrial and protective coatings.
• Flame Retardant Synergist: Incorporated into polymer formulations, particularly with halogenated compounds, to improve flame retardant efficiency and reduce smoke emission.
• Dispersant and Stabilizer: Functions as a polymeric dispersant for pigments and fillers in demanding applications due to its surfactant-like properties.
• Chemical Intermediate: Used in further organic synthesis to create more complex sulfonated polymers and specialty chemicals.

Basic Information

Product Name	Sulfurous Acid, Disodium Salt, Polymer With Formaldehyde And 4,4-Sulfonylbisphenol
CAS No.	37372-10-4
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	4,4'-Sulfonylbis[phenol] polymer with formaldehyde and sodium sulfite; Phenol, 4,4'-sulfonylbis-, polymer with formaldehyde and sodium sulfite; Sodium sulfite-formaldehyde-4,4'-sulfonyldiphenol polymer; Sulfonated polyphenylsulfone; Bisphenol S polymer with formaldehyde and sodium sulfite; Poly(sodium 4,4'-sulfonyldiphenoxide sulfonate); Sodium poly(sulfonated bisphenol S formaldehyde)
EINECS	Contact for details

Quality Control

Our production of Sulfurous Acid, Disodium Salt, Polymer With Formaldehyde And 4,4-Sulfonylbisphenol adheres to stringent quality management protocols. Each batch undergoes rigorous analytical testing to ensure consistent composition, functionality, and purity. Certificates of Analysis (COA) detailing key parameters such as sulfonate content, molecular weight distribution, and residual monomers are available upon request. We are committed to meeting the specific quality requirements of our global B2B partners.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive). Keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture, which can affect product performance. Keep away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Off-white to light tan powder or granules
Identification (IR)	Conforms to structure
Sulfonate Content	Contact for details
Moisture Content	≤ 5.0% (Karl Fischer)
pH (1% Solution)	6.0 - 9.0
Residual Monomers	≤ 0.5% (HPLC)

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.