Bisphenol S (BPS)

Bisphenol S, commonly abbreviated as BPS, is a solid aromatic diphenol used as a building block and processing intermediate in polymer, resin and specialty chemical production.

Aozun supplies Bisphenol S in several quality levels ranging from 75% to 99.9%. Customers can select a suitable grade according to the required 4,4'-BPS content, 2,4'-isomer limit, moisture, color and melting range.

Bisphenol S Product Information

The two phenolic hydroxyl groups provide useful reactivity in polymerization and chemical-modification processes. Its sulfone-linked aromatic structure also makes BPS relevant to materials designed for demanding processing conditions.

Bisphenol S Specifications

The figures above describe the available commercial quality levels. Final acceptance should be based on the agreed specification and the Certificate of Analysis for the supplied batch.

How to Select a Bisphenol S Grade

Choosing a grade should be based on the production process and finished-product requirements rather than purity alone.

Purity and Isomer Control

Processes involving polymerization or sensitive chemical reactions may require tighter control of both 4,4'-BPS content and the 2,4'-isomer.

The 99.8% and 99.9% grades are suitable for customers requiring low isomer content and consistent raw-material quality. Lower-purity grades may be considered when the downstream process has broader acceptance limits.

Moisture

Moisture can affect weighing accuracy, storage condition and reaction control. Grades with a maximum moisture content of 0.1% are more appropriate for moisture-sensitive production processes.

Color

APHA color should be considered when BPS is used in white or light-colored polymers, coatings and other appearance-sensitive materials.

For applications where the final color is not critical, a standard or lower-purity grade may offer a more economical option.

Melting Range

The melting range can be used as one part of incoming raw-material inspection. It should be reviewed together with assay, isomer content, moisture and appearance.

Bisphenol S Applications

Engineering Polymers and Resins

Bisphenol S can be used as a functional raw material or intermediate in the preparation of:

• Polyethersulfone and related engineering polymers

• Polysulfone materials

• Selected polycarbonate systems

• Bisphenol S-based epoxy materials

• Phenolic resin formulations

• Heat-resistant polymer intermediates

High-purity grades are generally selected when the reaction is sensitive to impurities, moisture or raw-material color.

Thermal and Functional Materials

BPS may be used as a formulation component or chemical intermediate for:

• Thermal-recording materials

• Functional coatings

• Photosensitive chemical systems

• Specialty imaging materials

• Performance additives based on diphenolic chemistry

Suitability for thermal paper or other consumer-related products must be reviewed according to the regulations of the destination market.

Dyeing and Textile Chemicals

Bisphenol S may be processed into chemical intermediates or auxiliaries for:

• Dye-fixing systems

• Textile-processing formulations

• High-temperature dyeing processes

• Dye and pigment intermediates

The required grade depends on the acceptable color, impurity level and performance of the finished auxiliary.

Leather and Surface Treatment

Additional applications may include the production or formulation of:

• Leather-treatment chemicals

• Metal surface-treatment products

• Electroplating-related additives

• Specialty coating intermediates

• Other functional industrial chemicals

BPS is normally used as one component of a larger formulation. Compatibility, dosage and processing conditions should be confirmed through laboratory or production trials.

Recommended Grade Selection

The table provides general selection guidance only. The final grade should be confirmed against the customer’s formulation and quality standard.

Packaging

Available packaging options include:

• 25 kg plastic woven bags

• 25 kg paper bags

• FIBC packaging for suitable order quantities

• Alternative packaging by prior agreement

Please confirm the required packaging type and net weight when requesting a quotation.

Storage and Handling

Store Bisphenol S in its original sealed packaging in a cool, dry and ventilated warehouse.

Protect the product from:

• Moisture

• Direct sunlight

• Excessive heat

• Package damage and contamination

Avoid unnecessary dust generation during handling. Use appropriate personal protective equipment and follow the latest Safety Data Sheet and local handling regulations.

Quality Documents

Documents can be provided according to the selected grade and order requirements, including:

• Certificate of Analysis

• Safety Data Sheet

• Technical Data Sheet

• Packing information

• Batch information

• Commercial shipping documents

If your process has a special limit for purity, 2,4'-isomer, moisture, melting range or color, include the requirement in your inquiry.

Request a Bisphenol S Quote

To receive an accurate quotation, please provide:

• Required purity or specification

• Intended application

• Trial or commercial quantity

• Estimated annual demand

• Destination country or port

• Preferred packaging

• Required documents

• Expected delivery schedule

Contact Aozun to confirm the current specification, sample availability, packaging and bulk supply conditions for Bisphenol S CAS 80-09-1.

Bisphenol S FAQ

What is Bisphenol S?

Bisphenol S is an aromatic diphenol identified by CAS number 80-09-1. It is mainly used as a functional raw material or intermediate in polymers, resins and specialty chemical production.

Is 4,4'-Dihydroxydiphenyl Sulfone the same as Bisphenol S?

Yes. Bisphenol S, BPS, 4,4'-dihydroxydiphenyl sulfone, 4,4'-sulfonyldiphenol and bis(4-hydroxyphenyl) sulfone are commonly used names for CAS 80-09-1.

Which Bisphenol S grade should I choose?

The 99.8% and 99.9% grades are suitable when low moisture, low isomer content and controlled color are important. The 99.5% grade can be considered for general resin and fine chemical production, while lower-purity grades may be evaluated for less demanding industrial processes.

Does higher purity always provide better results?

Not always. Higher purity provides tighter control of impurities and raw-material consistency, but the most suitable grade depends on the formulation, process conditions and finished-product standard.

Can Bisphenol S directly replace Bisphenol A?

Bisphenol S and Bisphenol A have different molecular structures and processing characteristics. Any substitution should be confirmed through formulation testing, product-performance evaluation and regulatory review.

What should be checked on the COA?

The main parameters normally include 4,4'-BPS assay, 2,4'-isomer content, moisture, melting range, appearance and APHA color when applicable.