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HS Code |
698117 |
| Productname | Sulphur Black 521B |
| Chemicalclass | Sulphur dye |
| C I Number | 53185 |
| Physicalform | Powder |
| Color | Black |
| Solubility | Insoluble in water, soluble in sodium sulfide solution |
| Mainapplication | Textile dyeing |
| Molecularformula | Complex mixture, principal component C24H16N6Na2O16S8 |
| Lightfastness | Good |
| Stability | Stable under normal conditions |
| Meltingpoint | Decomposes before melting |
| Phvalue | Neutral to alkaline in solution |
| Storageconditions | Keep in cool, dry place |
| Odor | Slight characteristic odor |
| Appearance | Fine black powder |
As an accredited Sulphur Black 521B factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | The packaging for Sulphur Black 521B features a 25 kg woven bag with clear labeling, product details, and safety instructions. |
| Shipping | Sulphur Black 521B is shipped as a solid powder, typically packed in 25 kg woven bags with inner plastic liners to prevent moisture absorption. Containers are securely sealed, labeled with hazard and handling information, and stored in cool, dry conditions away from incompatible substances. Transport follows regulations for non-hazardous industrial chemicals. |
| Storage | Sulphur Black 521B should be stored in a cool, dry, and well-ventilated area, away from direct sunlight and sources of moisture. Keep the container tightly closed when not in use, and avoid exposure to strong acids or oxidizing agents. Store away from food, drink, and incompatible materials to ensure safety and preserve the chemical's stability and effectiveness. |
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Purity 98%: Sulphur Black 521B with a purity of 98% is used in cotton textile dyeing, where it provides deep and uniform black coloration. Solubility in water: Sulphur Black 521B with high solubility in water is used in continuous dyeing processes, where it enables fast and efficient dye bath penetration. Particle size 20 µm: Sulphur Black 521B with a particle size of 20 µm is used in pigment printing, where it ensures smooth and even color distribution. Stability at 120°C: Sulphur Black 521B with stability at 120°C is used in high-temperature exhaust dyeing, where it maintains consistent color strength without degradation. Moisture content <1%: Sulphur Black 521B with moisture content below 1% is used in dry blending for masterbatch production, where it prevents lump formation and ensures uniform dispersion. Dispersibility index: Sulphur Black 521B with a high dispersibility index is used in liquid dye formulations, where it delivers enhanced penetration and minimal residue. Light fastness grade 5: Sulphur Black 521B at light fastness grade 5 is used in outdoor upholstery fabrics, where it offers long-lasting color under sunlight exposure. Alkali resistance: Sulphur Black 521B with superior alkali resistance is used in denim dyeing, where it resists fading during alkaline washing processes. |
Competitive Sulphur Black 521B 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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