| Customization: | Available |
|---|---|
| CAS No.: | 55585-28-9 |
| Formula: | C40h40n12o16s4na4 |
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1.Optical brightener 4BK has strong fluorescence, excellent whitening effect and slight bluish shade or reddish shade.
2.Optical brightener 4BK is with high light resistance and chemical stability.
3.Optical brightener 4BK has good acid resistance, stable in acid condition.
| Chemical Name | Fluorescent brightener 4BK optical brightener 4bk Powder |
| Cas No. | 99549-42-5 |
| Ingredients | Stibene sulfonic acid derivative |
| Fluorescent intensity(equivalent to standard product) | 250 |
| Whiteness WCIE | ≥1.1 |
| Viscosity(25 ºC),mPa.s | ≤50 |
| PH Value | 8-10 |
| Ionicity | Anion |
Optical brightener 4BK is mainly used in whitening of cotton fabric and polyester /cotton blends,T/C whitening in one bath.
1.Exhaust process: 0.1-0.8% (o.w.f.), bath ratio: 1:10-30
Temperature: 90--100ºC 30-40min-wash-dry.
The process can be adjusted according to the actual situation.
2.One bath process of Scouring hydrogen peroxide bleaching and whitening:
Dosage:0.2-0.8%( o.w.f.)
Stabilizer:1-5g/L
Scouring agent:0.5-1g/L
NaOH:2-4g/L
Bath ratio:1:10-30
Temperature:90--100ºC×30-40min wash dry. The processing can be adjusted according to the actual situation.
Stored in a cool dry place out of direct sunlight
Shanxi Colorshine Chemical Industry Co.,ltd is experienced and dynamic in chemical line. We are a professional manufacturer and supplier in the business scope of producing optical brighteners, carbon black, masterbacth, polyvinyl alcohol, sulphuric dyes, acid dyes,direct dyes and surface surfactant etc in China. We have our own R&D center and team. With most strict quality contral system and advanced modern equipment, we always provide our customers with best quality. The advanced equipment/technology, competitive price, sustainable and reliable quality control from us enable our customers enjoy more trust and cutting-edge strength in the local and world market. Our goal is to survive by quality and develop by credit.
In the past 16 years, our products have been exported to more than 31 countries in the world, Europe, South America, North America,Southeast Asia and Africa.we have developed mutual profitable and long-term relationship across the world wide.We will always give our customers the best quality products, the most reasonable prices and effective safe transportation.
What is Optical brightener 4BK?
Optical brightener 4BK, also known as Fluorescent Brightener 4BK, is a type of fluorescent whitening agent that is commonly used in the textile industry. It is a water-soluble compound that is primarily used to enhance the brightness and whiteness of textile products, such as cotton, wool, and synthetic fibers
How does Optical brightener 4BK work?
Optical brightener 4BK works by absorbing UV light and emitting blue light, which enhances the perceived whiteness of fabrics. It is especially effective in brightening yellowish or dull fabrics.
What is the advantage of 4BK?
Some of the advantages of optical brightener 4BK include its high effectiveness, versatility, and compatibility with other textile chemicals.
Optical brightener 4BK is also known for its high stability and good light fastness properties, which make it suitable for use in a wide range of applications. It is compatible with a range of textile fibers and can be used in different stages of textile production, including dyeing, printing, and finishing.
Optical brightener 4BK is generally considered to be safe for use in textile products, but it is important to follow proper safety guidelines when handling and using the compound.
Q1: Are you a manufacturer?
Answer: Yes, we are a factory since 2006.
Q2: How to contact with us?
Click the "Contact Supplier" And then send us message the product you interest in, you will get valid reply within TWO hours.
Q3:Which kind of payment terms do you accept?
For small order,you can pay by T/T,Western Union or Paypal,nomal order by T/T, L/C,D/P At sight or negotiable.
Q4:Can you give me a discount price?
Sure,It depends on your quantity
Q5:How can i get a sample?
free samples is available,but freight charges will be at your account and the charges will be return to you or deduct from your
order in the future.
Q6: How to confirm the Product Quality before placing orders?
A:You can get free samples for some products,you only need to pay the shipping cost or arrange a courier to us and take the
samples. You can send us your product specifications and requests,we will manufacture the products according to your requests.
Q7:How do you treat quality complaint?
A:First of all, our quality control system will reduce the quality problem to near zero. If there is a real quality problem caused by us,
we will send you free goods for replacement or refund your loss.
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