Fluorescent Whitening Agent SWN

Fluorescent Whitening Agent SWN is a specialized fluorescent brightener designed for use in the textile dyeing industry. This product enhances the whiteness and brightness of wool and silk fabrics, improving their overall appearance. It appears as a white crystalline powder and is known for its ability to dissolve in ethanol, ethylene glycol, acidic aqueous solutions, resins, varnishes, and some organic solvents, while its solubility in water is limited to 0.006%.

Product Uses
Wool and Silk Textiles
1. Enhancing Whiteness:
   - Wool: Fluorescent Whitening Agent SWN is particularly effective in brightening woolen fabrics, making them appear cleaner and more vibrant.
   - Silk: The brightener also works excellently on silk textiles, giving them a more luxurious and refined look.

2. Application Method:
   - Salt Formation: Commercially, it is often combined with sulfuric acid or hydrochloric acid to form a salt, or mixed with organic acids like tartaric, citric, or oxalic acids to enhance solubility.
   - Addition of Dispersants: To improve its application, solubilizing agents and dispersants are added, resulting in a solution that can be easily applied to textiles.

3. Color Tone Adjustment:
   - Red-Purple Hue: The use of Fluorescent Whitening Agent SWN imparts a red-purple hue to the whitened textiles, which enhances the visual appeal of the fabrics.

Product Advantages
1. Effective Brightening:
   - Enhanced Whiteness: Fluorescent Whitening Agent SWN significantly improves the whiteness of wool and silk textiles, making them appear more attractive and of higher quality.
   - Visual Appeal: The brightener adds a subtle red-purple hue, enriching the overall appearance of the fabrics.

2. Versatility in Solvents:
   - Multiple Solvent Compatibility: The brightener is soluble in a variety of solvents including ethanol, ethylene glycol, and acidic aqueous solutions, providing flexibility in its application.
   - Ease of Use: This versatility makes it easier to integrate the brightener into various textile processing methods.

3. Improved Appearance:
   - Enhanced Brightness: By effectively increasing the brightness of wool and silk textiles, the brightener ensures that fabrics look more vivid and appealing.
   - Consistency: It provides uniform brightening, ensuring that the entire fabric maintains a consistent appearance.

Product Features
1. Application Specifics:
   - Not Suitable with Sodium Chlorite: It is important to note that Fluorescent Whitening Agent SWN should not be used in baths containing sodium chlorite.
   - Red-Purple Hue: The brightener imparts a distinctive red-purple hue, enhancing the visual quality of the treated textiles.

2. Solubility:
   - Limited Water Solubility: The brightener has limited solubility in water (0.006%), but is highly soluble in other solvents, allowing for flexible application methods.
   - Solution Formation: It is commonly combined with acids or solubilizing agents to form a solution that can be applied to textiles.

Usage Instructions
Wool and Silk Textiles
1. Dosage:
   - Recommended Amount: For every 100 kg of wool or silk textiles, the recommended amount of Fluorescent Whitening Agent SWN is between 50 g and 500 g (0.05-0.5%).

2. Preparation:
   - Salt Formation: Prepare the brightener by combining it with sulfuric acid, hydrochloric acid, or organic acids such as tartaric, citric, or oxalic acids to form a salt.
   - Solution Preparation: Add solubilizing agents and dispersants to enhance the solubility and distribution of the brightener in the solution.

3. Application Process:
   - Textile Treatment: Apply the prepared solution to the wool or silk textiles as per the specified dosage to achieve the desired brightening effect.
   - Avoid Sodium Chlorite: Ensure that the brightener is not used in baths containing sodium chlorite to avoid any adverse reactions.