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HS Code |
942272 |
| Chemical Name | 4,4'-Bis(2-sulfostyryl)biphenyl disodium salt |
| Appearance | White to light yellow powder |
| Cas Number | 27344-41-8 |
| Molecular Formula | C28H20S2O6Na2 |
| Molecular Weight | 562.57 g/mol |
| Solubility | Easily soluble in water |
| Melting Point | Above 300°C (decomposes) |
| Main Application | Optical brightening agent for textiles and detergents |
| Fluorescence Color | Blue-violet under UV light |
| Ionic Character | Anionic |
| Stability | Stable under normal conditions |
| Recommended Ph Range | 6-11 |
As an accredited Optical Brightener ER-II factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | The packaging for Optical Brightener ER-II is a 25 kg net weight fiber drum with an inner plastic liner for moisture protection. |
| Container Loading (20′ FCL) | Container Loading (20′ FCL) for Optical Brightener ER-II: 9,000 kg packed in 25 kg drums or bags, securely stacked for export. |
| Shipping | Optical Brightener ER-II is securely packed in fiber drums or plastic containers, each lined with inner plastic bags to prevent contamination and moisture. Standard package sizes are typically 25 kg per drum. The material should be shipped in cool, dry conditions, avoiding exposure to sunlight, heat, and sources of ignition. |
| Storage | Optical Brightener ER-II should be stored in a cool, dry, and well-ventilated area, away from direct sunlight and sources of heat or ignition. Keep the container tightly closed when not in use to prevent contamination and moisture absorption. Avoid contact with strong oxidizing agents. Store in a labeled, suitable chemical container to ensure safety and maintain product stability. |
| Shelf Life | Optical Brightener ER-II typically has a shelf life of 12 months when stored in a cool, dry, and well-ventilated area. |
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Purity 99%: Optical Brightener ER-II with purity 99% is used in polyester fiber processing, where it delivers superior whitening effect and color brightness uniformity. Melting point 230°C: Optical Brightener ER-II with melting point 230°C is used in high-temperature textile extrusion, where it ensures thermal stability and consistent performance. Particle size ≤10 μm: Optical Brightener ER-II with particle size ≤10 μm is used in plastic masterbatch production, where it promotes homogeneous dispersion and enhanced optical clarity. Viscosity grade low: Optical Brightener ER-II of low viscosity grade is used in paper coating applications, where it enables smooth mixing and uniform surface gloss. Stability temperature 220°C: Optical Brightener ER-II with stability temperature 220°C is used in polypropylene molding, where it maintains fluorescent intensity after thermal processing. Molecular weight 600 g/mol: Optical Brightener ER-II with molecular weight 600 g/mol is used in detergent formulation, where it increases washing efficiency by improving fabric luminance. Solubility in water moderate: Optical Brightener ER-II with moderate water solubility is used in aqueous ink production, where it enhances print brightness and sharpness. Light fastness grade 7: Optical Brightener ER-II with light fastness grade 7 is used in outdoor plastic goods manufacturing, where it preserves whiteness under prolonged UV exposure. pH stability 4–10: Optical Brightener ER-II with pH stability 4–10 is used in textile dyeing processes, where it remains effective across a wide pH range for reliable performance. Thermal decomposition point 260°C: Optical Brightener ER-II with thermal decomposition point 260°C is used in PET resin compounding, where it avoids yellowing during high-temperature extrusion. |
Competitive Optical Brightener ER-II 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
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