Optical brightener SWN

Optical Brightener SWN is a specialized optical brightener designed for use in the textile dyeing industry. This product increases the whiteness and brightness of wool and silk fabrics, improving their overall appearance. It comes in the form of white crystalline powder and is soluble in ethanol, ethylene glycol, acidic aqueous solutions, resins, varnishes and some organic solvents, but its solubility in water is limited to 0.006%.

Product use:
wool and silk textiles
1. Whitening:
- Wool: The optical brightener SWN is particularly effective at whitening wool fabrics, making them look cleaner and brighter.
- Silk: Optical brighteners also work well on silk fabrics, making them look more luxurious and sophisticated.
2. How to use:
- Salt formation: Commercially, it is usually combined with sulfuric acid or hydrochloric acid to form a salt, or mixed with organic acids such as tartaric acid, citric acid or oxalic acid to improve solubility.
- Adding dispersants: To improve its application, solubilizers and dispersants can be added to make the solution easy to apply to textiles.
3. Color tone adjustment:
- Reddish-purple hue: Using the fluorescent whitening agent SWN can give the whitened fabric a reddish-purple hue, thereby enhancing the visual appeal of the fabric.

Product advantages:
1. Effective whitening:
- Improve whiteness: Fluorescent whitening agent SWN can significantly improve the whiteness of wool and silk textiles, making them more beautiful and better.
- Visual appeal: Brighteners add a small amount of reddish-purple tones, enriching the overall appearance of the fabric.
2. Solvent diversity:
-Multiple solvent compatibility: The whitening agent is soluble in a variety of solvents, including ethanol, ethylene glycol and acidic aqueous solutions, making it flexible in application.
- Ease of use: This versatility makes it easier to incorporate the brightener into various textile processing methods.
3. Improve appearance:
- Enhance brightness: By effectively increasing the brightness of wool and silk textiles, whitening agents ensure that fabrics look more vibrant and attractive.
- Consistency: It provides an even lightening effect ensuring a consistent look throughout the fabric.

Features:
1. Application characteristics:
- Not suitable for sodium chlorite: It should be noted that the optical brightener SWN is not suitable for use in bathtubs containing sodium chlorite.
- Reddish-purple tint: This whitener imparts a unique reddish-purple tint, thereby improving the visual quality of treated fabrics.
2. Solubility:
- Limited water solubility: This brightener has limited solubility in water (0.006%) but is highly soluble in other solvents, allowing for flexible application methods.
- Solution formation: It is usually combined with acids or solubilizers to form solutions that can be used on textiles.

Instructions for use:
wool and silk textiles
1. Dosage:
- Recommended dosage: The recommended dosage of optical brightener SWN is 50 g to 500 g (0.05%-0.5%) per 100 kg of wool or silk textiles.
2. Preparation:
- Salt formation: Mix the whitening agent with sulfuric acid, hydrochloric acid or organic acids (such as tartaric acid, citric acid or oxalic acid) to form a salt.
- Solution preparation: Add solubilizers and dispersants to improve the solubility and distribution of the whitening agent in the solution.
3. Application process:
- Textile treatment: Apply the prepared solution to wool or silk textiles in the specified amount to achieve the desired whitening effect.
-Avoid using sodium chlorite: Make sure not to use whiteners in baths that contain sodium chlorite to avoid adverse reactions.