![CAS No 39713-40-1 7,8-dihydro-5H-cyclohepta[b]pyridine-5,9(6H)-dione Pharmaceutical Intermediates](https://ecdn6.globalso.com/upload/p/2209/image_other/2025-04/39713-40-1-7-8-dihydro-5h-cyclohepta-b-pyridine-5-9-6h-dione-structural-formula.png)
0102030405
Optical Brightening Agent CBS-L For Detergent
Product name: Optical Brightening Agent CBS-L
Structural formula: 
C.I. No.: 351
CAS No.: 27344-41-8
Molecular mass: 562.56
Formula: C28H20O6S2Na2
| Appearance | Greenish Liquid |
| Ionic character | Anion |
| Main content | 20±1% |
| E Value | 250±10 |
| Brightness CIE(Comparing with standard) | ± 1.5 |
| pH Value（1% solution） | 6.5~7.5 |
| Density(20℃±0. 1℃) | 1. 11~ 1. 13g/cm3 |
01
Performance and Features
7 Jan 2019
CBS-L can also be used in liquid detergent, it is conveniently added and the dosage can be exactly controlled;
High hard water fastness;
Dust free;
High acid fastness, alkaline fastness, chlorine fastness, and high oxide fastness. The recommend dosage is 0.05~0.2% (% W/W Detergent).
Packaging and Storage
Packaging with 25kg bag, 20kg carton, 500kg bag or according to customer’s request. Shelf-life: 2 years, store under the room temperature, avoid sunlight and moisture.
02
Short description
7 Jan 2019
Our optical brightener is a versatile, high-performance additive that improves the brightness and whiteness of a variety of materials. With over 20 years of experience producing optical brighteners, we have perfected our formulations to deliver superior results in textiles, paper, plastics, detergents, paints and more. Our products stand out for their superior performance, reliability and versatility, making them ideal for industries looking to enhance the visual appeal of their products.
Product details
Functional principle and performance of fluorescent whitening agents
Our optical brighteners are also known as optical brighteners (OBA), optical brighteners (FB), optical brighteners (FBA), optical brighteners, optical brighteners (FWA) and optical brighteners , its principle of action is fluorescence. When exposed to UV light, it absorbs light energy and re-emits it as visible light, thereby increasing the brightness and whiteness of the material being coated. This mechanism ensures that the treated products take on a shiny, vibrant appearance, making them visually attractive to consumers.
03
7 Jan 2019
Widely used in various industries
Our optical brighteners are used in a wide range of industries including textiles, paper, plastics, detergents and paints. In textiles, it gives fabrics a bright white appearance, making them look fresher and more vibrant. In paper production, it can improve the brightness and whiteness of paper, resulting in a more visually appealing final product. When incorporated into plastics, it improves optical properties and makes products appear brighter and more attractive. Additionally, in detergents and paints, it can improve the whiteness and brightness of the final product, resulting in a more attractive visual effect.
Superior performance and company advantages
Our optical brighteners stand out for their exceptional performance and reliability. It's formulated to provide consistent and long-lasting brightness enhancement, ensuring treated products maintain their visual appeal over time. Additionally, our extensive experience in manufacturing optical brighteners allows us to improve our products to meet the highest quality standards, making them a trusted choice in various industries around the world. Our commitment to innovation and customer satisfaction sets us apart as we continually strive to develop advanced formulations to meet our customers' ever-changing needs.
In summary, our optical brightener is a premium additive that improves the visual appeal of products across a variety of industries. With its proven performance, versatility and reliability, it is ideal for enhancing the brightness and whiteness of textiles, paper, plastics, detergents, paints and more. Choose our optical brighteners to make your products shine and attract consumers with their dazzling appearance.
description2