Product Parameters
Property |
Details |
Chemical Name |
2,2'-(1,2 - Ethenediyldi - 4,1 - phenylene)bisbenzoxazole; OB - 1 |
CAS Number |
1533 - 45 - 5 |
Molecular Formula |
C28H18N2O2 |
Molecular Weight |
414.46 g/mol |
Appearance |
Yellow - green or light green powder |
Melting Point |
357 - 360 °C |
Solubility |
Insoluble in water. Soluble in organic solvents like chloroform, benzene, toluene, and xylene. |
Fluorescence Characteristics |
Strong blue - violet fluorescence under ultraviolet light. |
Stability |
Stable under normal conditions. Exhibits good heat resistance, light resistance, and migration resistance. |
The uses of OB - 1 are as follows:
- Plastics Industry: It is widely used in the plastics industry. For example, in the production of ABS, PS, and HIPS plastics, adding OB - 1 can significantly improve the whiteness and brightness of the products, making them more aesthetically pleasing. In the case of engineering plastics such as PA and PC, OB - 1 not only enhances their appearance but also helps to improve their resistance to ultraviolet light, thereby prolonging the service life of the products. For polyolefin plastics like PP and EVA, as well as rigid PVC, OB - 1 can improve their surface gloss and color stability.
- Textile Industry: In the textile industry, OB - 1 is mainly used for the whitening treatment of polyester - based fabrics. It can make polyester fibers and polyester - blended fabrics with cotton or other fibers appear whiter and more vivid. Moreover, it has good fastness properties, ensuring that the whitening effect remains after multiple washes. In the production of polyester - based textiles, OB - 1 can be added to the spinning solution to achieve uniform whitening throughout the fiber.
- Paper Industry: In the paper industry, OB - 1 is used to improve the whiteness and optical properties of paper. It can make the paper look more glossy and smooth, enhancing its printability and appearance. Whether it is used in writing paper, printing paper, or packaging paper, OB - 1 can improve the overall quality of the paper product.
- Coating and Ink Industry: OB - 1 is also used in coatings and inks. It can improve the whiteness and brightness of coatings, making the coated surface more attractive. In inks, it helps to enhance the color saturation and gloss of printed images, especially for applications where high - quality visual effects are required, such as in packaging printing and graphic arts
Detailed Photos
Product Description
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Chongqing Yuhan Technology Co., Ltd. -- Bridging High-Quality Chemicals to Global Markets
About Us
Since 2017, Chongqing Yuhan Technology has grown from a local supplier to a leading international trader of chemical raw materials and reagents. We serve diverse industries including electric power, metallurgy, agriculture, pharmaceuticals, textiles, plastics, and research institutions, with a global client base.
Our Business Scope
We offer a wide range of chemical products, specializing in high-purity acids, perovskite materials, and hazardous chemicals. Our focus on bulk and high-performance materials ensures we meet the unique needs of our clients with customized solutions.
Our Strengths
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Diverse Product Lines: Comprehensive range of chemicals for one-stop procurement.
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Market Competitiveness: Strong market position with long-term partnerships.
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Looking Forward
We are committed to continuous improvement, offering more professional and efficient solutions. We aim to expand our international presence and become the preferred partner for high-quality chemical raw materials and reagents globally.
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Industry Reputation: Recognized for professionalism and reliability.
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Risk Control: Effective management of safety and environmental risks.
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Partner Trust: Trusted for securing favorable terms and prices.








Q1: Can I get some samples?
A: Yes, sure. Usually, we can provide free samples for less than 5 kg, but the customer needs to pay for the shipping.
Q2: What is your MOQ?
A: The minimum order quantity varies for different products, with most requiring a minimum of 1 ton. However, we can accommodate smaller quantities, such as 100kg, with a 100% sample charge.
Q3: How to confirm product quality before placing an order?
A: You can obtain free samples of the products, but you need to cover the shipping fee or arrange for the samples to be sent to us by express. Additionally, you can provide us with your product specifications and requirements, and we will manufacture the products accordingly.
Q4: Is there a discount for bulk purchases? How much is the discount?
A: Yes, we offer discounts for bulk purchases. The discount is determined by evaluating factors such as purchase volume, product type, and cooperation period. Generally, the larger the purchase volume, the greater the discount.
Q5: How do I start paying?
A: Payment can be made by wire transfer, Western Union, PayPal, Visa, Mastercard, T/T, Apple Pay, Google Pay, etc.
Q6: What is the shipping time?
A: We ship the products out within 1-3 days and provide a tracking number. Shipping time varies by country.
Q7: What qualifications and certifications does the company have? Such as ISO certification, etc.
A: Our supply manufacturers hold several authoritative certifications to ensure our products and services meet international standards and industry regulations. This includes the ISO 9001 Quality Management System certification, which indicates we have reached internationally recognized levels in product quality control, production process management, and continuous improvement, providing stable and reliable quality assurance for customers.
Q8: How about the after-sale service of products?
A: After purchasing products from our company, you will be supported by our professional technical team and after-sales team, who will help solve any problems you may encounter.