Fluorescent Brightener Optical Brightening Agent 4BK CAS NO.12768-91-1

Fluorescent Brightener 4BK is a fluorescent brightening agent for stilbene, with a blue-violet fluorescent colour. Compared to VBL, it has better water solubility, light resistance, acid and alkali resistance and higher whiteness at the same dosage. It is particularly suitable for the whitening and brightening of high-grade paper and cotton fabrics.

Product Description:

Fluorescent Brightener 4BK is a fluorescent brightening agent for stilbene, with a blue-violet fluorescent colour. Compared to VBL, it has better water solubility, light resistance, acid and alkali resistance and higher whiteness at the same dosage. It is particularly suitable for the whitening and brightening of high-grade paper and cotton fabrics.

Common Name:   Fluorescent Brightener 4BK
Other Name:  Fluorescent Brightener 87
C.I.:  87
CAS No.:   12768-91-1
EINECS No.:  -
Appearance:  Light green powder 
Molecular Formula:  C40H40N12Na4O16S4
Category:  Textile Auxiliary Agent(Textile chemical)
Brand Name:  Colorcom
Shelf Life:  2 Years
Place of Origin:  Zhejiang, China.

Applicable industries:

It is suitable for the whitening of cotton and polyester-cotton blended fabrics, and the whitening of cotton blended fabrics.

Quick Details:

Performance characteristics:

1. It has a good fluorescent whitening effect, strong whiteness enhancing power, bright and vivid colour.
2. Insensitive to light, chemical properties are more stable. 
3. It is resistant to weak acids, alkalis, hydrogen peroxide and perborates, and is suitable for alkali-oxygen-bath processing and also for rolling and dyeing processes. 
4. It has good washing resistance.

Method of Application:

1.  Dip-dyeing and absorbing method: 
Dosage: 0.1%-0.8% (o.w.f); Bath ratio: 1:10-30; Dyeing temperature: 95-100 degrees; Holding time: 30-40 minutes. 
2.  Boiling and oxygen bleaching whitening-bath method: 
Dosage: 0.25-0.8% (o.w.f); Hydrogen Peroxide (30%): 5-15g/L; Refining agent SH-A: 3-5g/L; Bath ratio: 1:10-30; Dyeing temperature: 95-100 degrees; Holding time: 30-40 minutes; Washing and drying.

Product Advantage:

1. Stable Quality

  All products have reached national standards, product purity of more than 99%, high stability, good weatherability, migration resistance.

2. Factory Direct Supply

  Plastic State has 2 production bases, which can guarantee the stable supply of products, factory direct sales.

3. Export Quality

  Based on domestic and global, the products are exported to more than 50 countries and regions in Germany, France, Russia, Egypt, Argentina and Japan.

4. After-sales Services

24-hour online service, the technical engineer handles the whole process regardless of any problems during the use of the product.

Packaging:

In 25kg drums (cardboard drums), lined with plastic bags or according to customer's requirements.

Company Introduction:

Colorcom is a global leader in industrial chemical manufacturing and is continuously innovating and transforming to exceed client expectations and industry standards.

Colorcom prides itself on superior customer and technical focus, while focusing on support, developing and manufacturing superior colorants and specialty chemicals. All of our industrial chemical manufacturing is executed to enhance the performance, appeal and processing of a broad range of products used in various industries and consumer - based applications.

Our advantage:

The competitive advantages of Colorcom international as your business partner or supplier:

1.Established manufacturer.
2.Current ISO certified; REACH registered.
3.Track record of quality, Lot to lot consistency.
4.Zero defect, Return policy.
5.Sufficient inventory.
6.Wide product portfolio, A great choice of shades.
7.Joint product development.
8.Total innovative solutions for every industry of the specific requirements.
9.Open dialogue and communication channels.
10.Long term commitment to meet or exceed the expectations of customers.
11.Competitive pricing, Optimistic margin.
12.Providing efficient service which is second to none.
13.Constantly changing industry requirements for innovative, fully customized products and solutions.
14.Consistent color performance, adaptability, flexibility and customization.
15.26 years of chemical industry knowledge and experience.
16.Colorcom makes every effort to better serve the global customers,We create and bring the best values to you.

Sincerely look forward to your inquiry!

we will be the most sincere service attitude and product professionalism to make you satisfied!