|
HS Code |
127621 |
| Product Name | Sulphur Black 521B |
| Color Index | CI Sulphur Black 1 |
| Chemical Class | Sulphur Dyes |
| Appearance | Black powder or granules |
| Solubility | Insoluble in water, soluble in sodium sulfide solution |
| Molecular Formula | Approximate, varies; commonly C28H20N6Na2O6S2 |
| Application | Textile dyeing (mainly cotton and viscose) |
| Shade | Jet black |
| Ph Value | Alkaline conditions required for dyeing |
| Lightfastness | Good to very good |
| Tinctorial Strength | High |
| Moisture Content | Typically less than 2% |
| Storage | Keep in a cool, dry, and well-ventilated area |
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 | Sulphur Black 521B is packaged in a 25 kg woven plastic bag with inner lining, labeled with product name and safety information. |
| Shipping | Sulphur Black 521B is typically shipped as a powder or granular substance in tightly sealed, moisture-resistant bags or drums, each weighing 25 or 50 kg. Packaging complies with relevant safety regulations, clearly labeled with hazard warnings. Shipments are transported in dry, well-ventilated containers to prevent exposure to moisture and contamination. |
| Storage | Sulphur Black 521B should be stored in a cool, dry, and well-ventilated area, away from direct sunlight and sources of heat or ignition. Keep the chemical in tightly sealed containers, clearly labeled, and away from incompatible materials such as strong oxidizers. Proper storage prevents moisture absorption, contamination, and deterioration, ensuring both safety and product quality. |
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 +8615365186327 or mail to sales3@ascent-chem.com.
We will respond to you as soon as possible.
Tel: +8615365186327
Email: sales3@ascent-chem.com
Flexible payment, competitive price, premium service - Inquire now!
