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HS Code |
312363 |
| Chemical Name | 4,4'-Bis(2-sulfostyryl)biphenyl |
| Appearance | White to light yellowish powder |
| Solubility | Soluble in water |
| Melting Point | Over 300°C (decomposes) |
| Molecular Formula | C28H20S2O6Na2 |
| Molecular Weight | 562.57 g/mol |
| Cas Number | 7128-64-5 |
| Fluorescence | Emits blue fluorescence under UV light |
| Ph Range | 6-9 in aqueous solution |
| Stability | Stable under normal storage conditions |
| Ionic Character | Anionic |
| Odor | Odorless |
As an accredited Optical Brightener VBL factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Optical Brightener VBL is packaged in a 25 kg woven plastic bag with inner lining, labeled with product name and safety information. |
| Shipping | Optical Brightener VBL is typically shipped in tightly sealed, moisture-proof, 25 kg fiber drums or bags with inner plastic lining. Packages are clearly labeled, handled with care, and stored in a cool, dry, well-ventilated area away from direct sunlight and incompatible substances to ensure product quality during transport. |
| Storage | Optical Brightener VBL should be stored in a cool, dry, and well-ventilated area, away from direct sunlight, moisture, and sources of heat or ignition. Keep the container tightly closed when not in use. Avoid contact with incompatible substances such as strong acids and oxidizing agents. Ensure proper labeling and follow all safety regulations for chemical storage. |
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Purity 99%: Optical Brightener VBL with purity 99% is used in high-quality detergent manufacturing, where it ensures maximum fabric whiteness and brightness. Water Solubility: Optical Brightener VBL with high water solubility is used in liquid laundry formulations, where it provides rapid dispersion and uniform optical effect. Molecular Weight 756 g/mol: Optical Brightener VBL with molecular weight 756 g/mol is used in paper coating processes, where it delivers enhanced brightness and reduced yellowing. Melting Point 220°C: Optical Brightener VBL with a melting point of 220°C is used in textile fiber production, where it maintains optical stability during high-temperature processing. Stability pH 4–10: Optical Brightener VBL with stability in pH 4–10 is applied in textile dyeing baths, where it preserves brilliant whiteness under varied chemical conditions. Particle Size <50 μm: Optical Brightener VBL with particle size less than 50 μm is used in emulsion paint systems, where it ensures homogenous distribution and superior surface luminance. Light Fastness Grade 4: Optical Brightener VBL with light fastness grade 4 is used in outdoor coating applications, where it provides prolonged color retention and anti-yellowing performance. Thermal Stability up to 180°C: Optical Brightener VBL with thermal stability up to 180°C is used in plastic extrusion processes, where it resists degradation and ensures long-term whitening effect. Reflectance Increase 15%: Optical Brightener VBL with reflectance increase of 15% is used in specialty printing inks, where it achieves higher print brilliance and sharper image contrast. |
Competitive Optical Brightener VBL prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please contact us at +8615651039172 or mail to sales9@bouling-chem.com.
We will respond to you as soon as possible.
Tel: +8615651039172
Email: sales9@bouling-chem.com
Flexible payment, competitive price, premium service - Inquire now!
