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Fluorescent Brightener 367 (CAS 5089-22-5), also known as Optical Brightener KCB, is a naphthalene-based whitening agent appearing as a yellowish-green powder. It is primarily used to whiten EVA foam shoe soles, plastics (PE, PP, PVC, ABS), and synthetic fibers.
Key Selling Points:
Brilliant Blue-White Tone: Delivers a high-intensity, greenish-blue fluorescence that effectively neutralizes yellowing in materials.
High Thermal Stability: Withstands processing temperatures up to 210°C, making it ideal for extrusion and injection molding.
Excellent Performance: Offers superior light fastness, weather resistance, and low migration (non-blooming) in polymer matrices.
Versatility: Effective at low dosages (0.01–0.05%) across footwear, coatings, and masterbatches.
Compliance Note: While widely used in industrial plastics, verify current REACH/TSCA status and specific migration limits before promoting for food-contact or cosmetic applications.
Specifications of Fluorescent Brightener 367 CAS 5089-22-5 COA:
Items | Specifications | Results |
Appearance (25℃) | Yellowish-green crystalline powder | Yellowish-green crystalline powder |
Volatile Matter | ≤0.5% | 0.26% |
Melting Point | 210-212℃ | 210.4-211.5℃ |
Assay | ≥99.0% | 99.58% |
Conclusion | The product conforms to the above specifications. | |
Product Name:Fluorescent Brightener 367
CAS:5089-22-5
MF:C24H14N2O2
Melting point :210-212°C
form:Crystalline powder
color:Yellowish-green
Uses:
Fluorescent Brightener 367, also called Optical Brightener KCB / C.I. 367 (CAS 5089-22-5), is a naphthalene-bisbenzoxazole fluorescent whitening agent. It appears as a yellowish-green crystalline powder, is insoluble in water, has a melting point of 210–212 °C, and shows maximum UV absorption around 370 nm with a bright blue-white fluorescence.
Main uses
Whitening and brightening synthetic fibers and plastics, especially EVA foam shoe materials.
Used in PE, PP, PVC, PS, ABS, TPR, PU foam, polyester fiber, plastic films, injection molding and extrusion materials.
Also applied in coatings, inks, paper, rubber and color masterbatch.
Typical dosage in plastics is about 0.01–0.05%.
Chemical-grade selling points
Strong whitening effect with bright blue-white tone, attractive for Asian footwear and plastic markets.
Good thermal stability matching EVA processing around 210 °C.
Good light resistance, weather resistance and migration resistance.
Good compatibility with polymers; low risk of blooming or extraction.
High purity grades commonly reach ≥98–99%.
Compliance note: It is listed under US TSCA and has active EU REACH registrations; Canadian assessment has noted its presence in some nail polishes.1113 For cosmetic, footwear, food-contact or export applications, confirm current REACH/TSCA status, SDS and customer-specific regulatory limits before promotion.
Also, if you have any other questions, you can contact us
FAQ From Wuhan Fortuna Chemical Co.,Ltd
Q1: Can I get a sample for free ?
A: For small QTY and low value product, we can provide sample for free exclude shipping cost. For high value sample, we will charge the basic sample cost, but we can refund all the cost if customers place order after sample test.
Q2: How to confirm the product quality before placing orders ?
A: Most of our products confirm to international standards like USP/EP/BP/JP/CP. We will provide COA/TDS/MSDS for customers to confirm the specification before placing order.
Q3: What is the payment you accept?
A: For small and low value order, we accept CreditCard, MaterCard,VISA,Western Union and T/T.For large order, we can do T/T and L/C. Any pay on delivery or pay-after are not available for us.
Q4: What is your shipment way ?
A: For less than 100kg gross weight order will ship with courier like FedEx or UPS, we support customers to place courier orders remotely by their account, we will package the goods well and wait for pick up.For more than 100kg goods, we will transport by Air or Sea according to customers' requirement.
Q5: How long is your after-sales service?
A: We accept customer’s quality complaint in three month after customer received the goods. We provide tech.support for all-life if customer place order from our company.
Q6: How do you treat quality complaint ?
A: We support customer to provide our products to any rightful third party testing organization to test our products according to the COA specification, if the test result is confirm with COA, we will take all the loss for customers.
Company Information: Wuhan Fortuna Chemical Co.,Ltd established in 2006, is a big integrative chemical enterprise being engaged in Pharmaceutical and Intermediates, Food and Feed additives, Fine chemicals,Biochemical and Reagent, which is the members of Hubei E-commerce Chamber.
Our company has professional persons who major in chemical R&D and sicentific management, supply fine chemical products with high quality and close service, also supply custom-tailored products according to our clients' requirement.
We have a positive and self-motivated management work team with a common philosophy, caring and commitment through teamwork, our team strive to achieve success in delighting our clients and ourselves.
Since Wuhan Fortuna Chemical Co., Ltd founded, we continuously innovate our products and improve our service, sales network. Hence, we initiate the first sale mode on net in China, which is the retail trade of small package bring along wholesale of diversified management modes. Our products are exported widely to South Korea, Vietnam, Australia, Europe and South America, highly recommended by our clients.We insist on the management creed “Market is our compass, Quality is our life, Credit is our soul”. Clients’ trust is our forward power, their satisfaction is our struggling goal.
Wuhan Fortuna Chemical Co.,Ltd is a professional manufacturer which provide Fluorescent Brightener 367 with good quality and best price, welcome to contact us to get COA/TDS/MSDS of Fluorescent Brightener 367.
1. Guaranteed purity;
2. Large quantity in stock;
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