High Whitening Effect Wool Optical Brightening Swn CAS 91441 for Cotton Oba Swn

Fluorescent brightener SWN is soluble in ethanol, glycol, acidic liquor, resin and varnish. It's functions by emitting red light and present purple tincture.

Fluorescent brightener SWN is soluble in ethanol, glycol, acidic liquor, resin and varnish. 

It's functions by emitting red light and present purple tincture.


Product Name
Optical brightener SWN
Chemical Name
White crystal powder
Melting point
Soluble in ethanol, glycol, acidic liquor, resin and varnish. It functions by emitting red light and present purple tincture.

This fluorescence brightener SWN is mainly used for brightening the wool, natural silk, nylon, acetate fiber and the cellulose triacetate. Also used for brightening the cotton and acrylic fiber.

Can add the resin in the detergent for washing the fabrics, can improve the fabrics' external whiteness after washing within the range of Ph=3-11. 

Also can be used on the coating paper and used at the aspect of plastic and coating of chromaticity printing. 

1.Multipurpose brightener with excellent whiteness, soluble in ethanol but insoluble in water.
2.Good solubility and compatibility.

Package: Packaged in 25kgs fiber drum with double PE liners
Using method:
1. Applied to Plastics: the dosage of SWN is generally 0.01-0.06%, which can be mixed evenly with corresponding processing plastics.
2. When used for wool, natural silk and acrylic fiber, it is generally used in liquid state
SWN dosage: wool: 0.05-0.35%; natural silk: 0.05-0.4%; acrylic: 0.05-0.8%
3. This product can also be added to detergents and washing powder as whitening agent with the dosage of 0.001-0.005%.

1. One-stop service, track logistics information 18 hours a day.

2. Short delivery time: 3-7 days after delivery.

3. Payment : T/T, Paypal, Western Union,Alibaba Credit Insurance Order

4. Transportation mode: shipping, air transportation, express delivery and other ways you can choose. The professional team recommends the most cost-effective transportation mode for you.

5. Provide free samples, you can take the sample first and then make the purchase decision.

6. Low MOQ

1.It's our first business, how do I ensure your quality ?
1st confirmation: Credit will send you free samples and good quality speaks for itself!

2nd confirmation: Before the bulk order, we can provide pre-production samples according to your demands. During production, you are welcome to check by video at any time, or a third-party inspection agency to inspect the goods before shipment.

3rd confirmation : If there is indeed a normal defective rate of product after our successful cooperation, we will arrange the same amount of high quality products to try our best to reduce your money loss and deadline risk.

2.Is there a MOQ?
No moq, but In order to save your precious time and energy, and considering the opportunity cost of our factory, we do not
recommend the small batch cooperation model, but we will provide you with the most suitable solutions with the right number according to your actual requirements and our factory real situation. The Win-Win Cooperation is the ultimate goal of Credit!

3.Can I get free samples?
We can send free samples.

4.How long will I receive the quotation?
For most items, once we know the size ,the material,the package way and quantity, we will provide you with a quotation within 8 hours.

5.Can I customize the design?
It is highly appreciated that you can provide us with detailed designs and your business ideas. We design and build each project according to the needs of individual customers, so as to establish a Long-Term Cooperative partnership. We focus on creating high-quality innovative and environmentally responsible designs for you to highlight the advantages of your products.

6.Can I send an inquiry and get the solution today?
If you send email, WhatsApp, WeChat to contact us, we promise to reply to you within 8 hours! WhatsApp is the best because we all 18 hours online :)