Tinopal CBS-X is one of the most widely used optical brighteners in the detergent industry, valued for its excellent whitening efficiency, outstanding water solubility, and superior resistance to bleaching agents. As a disulfonic distyrylbiphenyl compound, Tinopal CBS-X delivers reliable optical whitening across a broad range of textile fibers and aqueous formulations.
Equivalent to BASF Tinopal® CBS-X, this optical brightener CBS-X complies with QB/T 2953-2023 and has become a benchmark product for detergent, soap, and water-based coating applications.
Chemical Identity and Regulatory Information
- Product Name: Optical brightener CBS-X
- Chemical Type: Disulfonic distyrylbiphenyl compound
- C.I. No.: 351
- CAS No.: 27344-41-8
- Molecular Formula: C₂₈H₂₀Na₂O₆S₂
- Molecular Weight: 562.60
- Executive Standard: QB/T 2953-2023
- Equivalency: BASF Tinopal CBS-X
Technical Specifications and Optical Properties
| Item | Specification |
|---|---|
| Appearance | Light yellow-greenish granules |
| Odor | Odorless |
| Max. UV Absorption Wavelength | 348 ± 1 nm |
| 1% Extinction Coefficient | 1105 – 1181 |
CBS-X exhibits strong absorption in the near-UV region and emits blue fluorescence that effectively neutralizes yellow tones in textiles and substrates.
Working Principle of Optical Brightener CBS-X
CBS-X functions by absorbing ultraviolet light and re-emitting it as visible blue fluorescence. This emitted blue light compensates for the inherent yellowish hue of fibers and materials, resulting in a noticeably brighter and cleaner appearance.
Due to its excellent solubility in water, Tinopal CBS-X disperses uniformly in aqueous systems, ensuring consistent whitening performance even at low dosages.
Performance Advantages of Optical Brightener CBS-X
CBS-X is recognized as one of the most effective optical brighteners for detergent applications due to the following advantages:
- Exceptional Whitening Efficiency
Provides up to 2.7 times higher brightening intensity on cotton compared with diphenylethylene tristriazine derivatives. - Excellent Fiber Affinity
Highly effective on cellulosic fibers, polyamide (nylon), and protein fibers at room temperature. - Outstanding Bleach Resistance
Maintains stable performance in the presence of sodium hypochlorite, making it a true bleach-resistant optical brightener. - Superior Solubility and Dispersibility
Rapidly dissolves in water, ensuring uniform optical effects without sedimentation. - Versatility in Aqueous Formulations
Suitable not only for detergents and soaps but also for water-based paints and inks.
Application Areas and Recommended Dosage
Detergent and Cleaning Products
- Common washing powder: 0.02 – 0.05%
- Concentrated washing powder: 0.05 – 0.2%
- Liquid detergent: 0.05 – 0.2%
- Washing syrup: 0.02 – 0.05%
Soap and Fabric Care
- Soap: 0.01 – 0.05%
- Fabric softeners: 0.01 – 0.05%
Water-Based Systems
- Water-based paints and inks: 0.01 – 0.05%
These dosage ranges ensure optimal whitening while maintaining formulation stability and cost efficiency.
Packaging, Transportation, and Storage
- Packaging: 25 kg drums or kraft bags
- Transportation: Protect from inversion, sunlight, moisture, and mechanical impact
- Storage: Store in a cool, dry, and well-ventilated area; recommended shelf life is up to 2 years
Conclusion
CBS-X is a high-performance optical brightener specifically designed for detergent and aqueous applications. Its superior whitening power, excellent bleach resistance, and outstanding water solubility make it an industry-preferred solution for enhancing fabric brightness and cleanliness. For manufacturers seeking consistent quality, regulatory compliance, and cost-effective whitening performance, CBS-X remains a proven and reliable choice.
At Shandong Grand Chemical Co., Ltd., we specialize in producing and supplying a wide range of high-performance optical brighteners for plastics, coatings, detergents, and textiles.
📩 Contact us for product data sheets, samples, or technical guidance:
Email: sales@obachemical.com
WhatsApp: +86 13173009832