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HS Code |
909921 |
| Product Name | Direct Fast Yellow RS |
| C I Number | C.I. 40040 |
| Chemical Class | Azo dye |
| Appearance | Yellow powder |
| Solubility In Water | Soluble |
| Ph Value | 6-8 (1% solution) |
| Molecular Formula | C16H14N4Na2O7S2 |
| Molecular Weight | 500.41 g/mol |
| Primary Application | Textile dyeing |
| Heat Stability | Good up to 120°C |
| Light Fastness | Moderate |
| Ionic Nature | Anionic |
| Cas Number | 6538-68-3 |
As an accredited Direct Fast Yellow RS factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Direct Fast Yellow RS is packaged in 25 kg net weight woven plastic bags, clearly labeled with product name, manufacturer, and hazard symbols. |
| Shipping | Direct Fast Yellow RS should be shipped in tightly sealed containers, protected from moisture, heat, and direct sunlight. Ensure labeling complies with applicable regulations. Handle with care to prevent leaks or spills. Transport under standard chemical safety protocols, keeping it separate from incompatible substances. Store in a cool, dry, and well-ventilated area. |
| Storage | Direct Fast Yellow RS should be stored in a cool, dry, and well-ventilated area, away from direct sunlight and sources of ignition. Keep the container tightly closed and properly labeled. Avoid contact with incompatible materials such as strong oxidizing agents. Ensure storage areas prevent contamination and accidental spillage, and utilize appropriate personal protective equipment when handling the product. |
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Purity 98%: Direct Fast Yellow RS with purity 98% is used in cotton textile dyeing, where it ensures high color yield and consistent shade reproducibility. Molecular weight 526.49 g/mol: Direct Fast Yellow RS with a molecular weight of 526.49 g/mol is used in paper coloration, where it provides uniform color penetration and fastness. Water solubility 50 g/L at 25°C: Direct Fast Yellow RS with water solubility of 50 g/L at 25°C is used in silk fabric printing, where it enables efficient dye uptake and sharp pattern definition. Light fastness grade 4: Direct Fast Yellow RS with light fastness grade 4 is used in school uniform manufacturing, where it maintains color stability under prolonged exposure to sunlight. pH stability 5-9: Direct Fast Yellow RS with pH stability range of 5-9 is used in denim yarn dyeing, where it delivers consistent performance in various alkaline and acidic environments. Melting point 220°C: Direct Fast Yellow RS with a melting point of 220°C is used in synthetic fiber dyeing, where it resists thermal degradation during high-temperature processing. Particle size 10 microns: Direct Fast Yellow RS with a particle size of 10 microns is used in pigment paste formulations, where it achieves excellent dispersion and minimized sedimentation. Bath stability 2 hours at 80°C: Direct Fast Yellow RS with bath stability of 2 hours at 80°C is used in batch dyeing processes, where it prevents precipitation and ensures even color distribution. Salt compatibility up to 60 g/L: Direct Fast Yellow RS with salt compatibility up to 60 g/L is used in blended fabric dyeing, where it supports strong dye-fiber interaction and vivid coloration. Wash fastness grade 3: Direct Fast Yellow RS with wash fastness grade 3 is used in household textiles, where it offers moderate resistance to repeated laundering. |
Competitive Direct Fast Yellow RS 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!
