Name: Chemical Factory Top Pure Best Price Fluorescent Brightener 220 CAS 16470-24-9
Brand: Wuhan Fortuna Chemical Co., Ltd.

Items	Specifications	Results
Appearance	Slight brown liquid	Slight brown liquid
Whiteness	Correspond to the standard±1.5	0.2
E VALUE	122 TO 128	125.7
PH VALUE	8 TO 11	9.0
Conclusion	The product conforms to the above specifications.

Fluorescent Brightener 220 (also known as Fluorescent Brightener BBU, C.I. Fluorescent Brightener 87, or sometimes associated with the CAS number 16470-24-9) is a specialized chemical compound used primarily in the textile and paper industries to enhance the whiteness and brightness of materials.

It belongs to the diamino stilbene triazine class of fluorescent whitening agents (FWAs). Its primary function is to absorb invisible ultraviolet (UV) light and re-emit it as visible blue light, which counteracts the natural yellowish tint of fibers and paper, making them appear brighter and whiter to the human eye.

Key Selling Points & Advantages

Based on its chemical properties and industrial applications, here are the main selling points of Fluorescent Brightener 220:

Exceptional Whiteness and Brilliance:

It provides a strong, clean blue-white shade, significantly improving the visual appeal of treated substrates. It is particularly effective at neutralizing yellow tones in cotton and cellulose-based materials.

Excellent Affinity for Cellulose Fibers:

It has a high affinity for cotton, viscose (rayon), and other cellulosic fibers. This ensures deep penetration and uniform distribution, resulting in consistent whiteness without patchiness.

Superior Fastness Properties:

Light Fastness: It demonstrates good resistance to fading when exposed to sunlight, making it suitable for products that will be used outdoors or in bright environments.

Chlorine Bleach Resistance: Unlike some other brighteners, FBA 220 maintains its effectiveness and color stability even after chlorination or exposure to bleach, which is crucial for laundry detergents and industrial cleaning processes.

Wash Fastness: It resists washing out during laundering, ensuring the whiteness lasts through multiple wash cycles.

Versatility in Application:

Textile Industry: Widely used for dyeing and finishing cotton and blended fabrics. It can be applied during the dyeing process or as a separate finishing step.

Paper Industry: Effective for increasing the brightness of various paper grades. It can be added directly to the pulp (mass addition), used in surface sizing, or applied via coating.

Detergents: Sometimes used as an additive in laundry detergents and soaps to keep clothes looking white.

Water Solubility and Stability:

It typically comes in a form that is readily soluble in water, facilitating easy integration into industrial liquid processes. It remains stable across a range of pH levels (acidic to alkaline) and in both soft and hard water conditions.

Cost-Effectiveness:

Due to its high efficiency (often requiring low dosage to achieve significant brightening effects) and durability, it offers a cost-effective solution for manufacturers looking to improve product quality without drastically increasing production costs.

Typical Applications

Cotton and Viscose Textiles: T-shirts, bed linens, towels, and denim.

Paper Products: High-quality printing paper, tissue, and cardboard.

Laundry Detergents: As a functional ingredient to maintain fabric whiteness.

Note: While CAS 16470-24-9 is frequently associated with "Fluorescent Brightener 220" or "BBU" in commercial listings, specific trade names and exact chemical formulations can vary slightly between manufacturers. Always consult the specific Technical Data Sheet (TDS) from your supplier for precise usage instructions and safety data.