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HS Code |
638887 |
| Product Name | Direct Yellow 157 |
| C I Number | 29077 |
| Chemical Class | Direct azo dye |
| Chemical Formula | C32H22N10Na2O11S3 |
| Molecular Weight | 888.77 g/mol |
| Appearance | Yellow powder or granules |
| Solubility | Soluble in water |
| Hue | Bright yellow |
| Application | Textile dyeing (cellulose fibers, paper, leather) |
| Maximum Absorption Wavelength | 400-415 nm |
| Cas Number | 13125-23-6 |
| Ph Stability | Stable in neutral and slightly alkaline solutions |
| Lightfastness | Moderate |
| Heat Stability | Stable up to 150°C |
| Ionic Nature | Anionic |
As an accredited Direct Yellow 157 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Direct Yellow 157 is packaged in a 25 kg net weight fiber drum, lined with plastic, and features clear labeling for safe handling. |
| Shipping | Direct Yellow 157 is typically shipped in tightly sealed, moisture-proof containers, such as fiber drums or plastic bags, to prevent contamination and moisture absorption. The shipment must comply with local and international regulations for transporting chemicals, ensuring clear labeling and proper documentation. Handle with care to avoid spillage and environmental release. |
| Storage | Direct Yellow 157 should be stored in a cool, dry, and well-ventilated area, away from direct sunlight and moisture. Keep the container tightly closed when not in use to prevent contamination. Store away from incompatible substances such as strong oxidizing agents. Properly label storage containers and ensure that only trained personnel access the chemical to maintain safety. |
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Purity 98%: Direct Yellow 157 with purity 98% is used in cotton fabric dyeing, where it ensures vibrant color penetration and fastness. Light Fastness Grade 4: Direct Yellow 157 with light fastness grade 4 is used in paper coloring, where it provides enhanced resistance to fading under sunlight. Molecular Weight 600: Direct Yellow 157 with molecular weight 600 is used in viscose fiber dyeing, where it delivers uniform shade distribution. Solubility 50 g/L at 60°C: Direct Yellow 157 with solubility 50 g/L at 60°C is used in water-based ink formulation, where it produces stable and bright yellow prints. pH Stability Range 6-9: Direct Yellow 157 with pH stability range 6-9 is used in silk dyeing, where it maintains color quality across varying process conditions. Melting Point 230°C: Direct Yellow 157 with a melting point of 230°C is used in textile printing pastes, where it withstands high-temperature curing without decomposition. Particle Size <10 μm: Direct Yellow 157 with particle size less than 10 μm is used in specialty coating applications, where it delivers smooth film formation and uniform coloration. |
Competitive Direct Yellow 157 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!
