Overview
4,4'-Sulfonyldiphenol (CAS 80-09-1 ), commonly known as BPS, is a bisphenol analogue used as a monomer and chemical intermediate across polymer and specialty chemical manufacturing.
It functions primarily as a building block in the synthesis of polysulfone resins, epoxy systems, and other high-performance polymers where thermal and chemical resistance are required.
In plastics and polymer manufacturing, BPS is incorporated into polysulfone and polyethersulfone chains to produce engineering resins used in membranes, filtration components, and medical-grade plastics.
The paper and textile industries use BPS as a color developer in thermal recording papers and as a dye-fixing agent in fabric treatment processes for industrial applications.
Formulators in personal care and cosmetics evaluate BPS as a functional ingredient in product stabilization systems. It also serves as a pharmaceutical intermediate in the synthesis of active compounds.
Its antioxidant character supports its use in stabilizing polymer formulations against degradation during processing. 4,4'-Sulfonyldiphenol is supplied as a white to off-white crystalline powder.
Technical and pharmaceutical-grade specifications are the most commonly available, with purity levels typically ranging from 98% to 99%+. Packaging options generally include 25 kg bags or drums.
Bulk quantities are available for industrial procurement to meet large-scale manufacturing needs. This chemical is essential for high-performance applications requiring durability and stability.
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Physical Properties
| Melting Point | 240.5 °C |
| Boiling Point | 230-240 °C |
| Density | 1.366 |
| Appearance | light yellow crystalline powder |
| Color | White to grayish-green |
| Odor | odorless |
| Form | Crystalline Powder |
| Water Solubility | 1.1 g/L (20 ºC) |
| Vapor Pressure | <0.0001 Pa (20 °C) |
| Refractive Index | 1.5220 (estimate) |
| pH | 6.6-7.0 (100g/l, H2O, 20℃) |
| Log P | 1.2 at 23℃ |
Safety & Handling
Danger GHS08 Hazard Statements H360 May damage fertility or the unborn child H371 May cause damage to organs H373 May causes damage to organs through prolonged or repeated exposure H402 Harmful to aquatic life H412 Harmful to aquatic life with long lasting effects Precautionary Statements P203 Obtain, consult and follow expert instructions for use. P260 Do not breathe dust/fume/gas/mist/vapours/spray. P264 Wash … thoroughly after handling. P270 Do not eat, drink or smoke when using this product. P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P318 IF exposed or concerned, get medical advice. P319 Get medical advice/attention if you feel unwell. P405 Store locked up. P501 Dispose of contents/container in accordance with local regulations. P308+P316 Get emergency medical help immediately.
Trade & Regulatory
| HS Code | 29309070 |
| Storage Class | 6.1C - Combustible acute toxic Cat.3 toxic compounds or compounds which causing chronic effects |
| WGK (Germany) | 2 |
Other Names
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Chemical Properties
- CAS Number
- 80-09-1
- EC Number
- 201-250-5
- Mol. Weight
- 250.27
- HS Code
- 29309070
- Category
- Pigments & Colorants