Fluorescent Brightener

Fluorescent Brighteners

1. Definition & Mechanism

Fluorescent brighteners (optical brightening agents, OBAs) are colorless dyes that:

Absorb UV light (300–400 nm)Re-emit blue-violet light (400–500 nm)Counteract yellowing, enhancing perceived whiteness/brightness

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2. Key Applications

Industry	Use Cases	Example Brighteners
Laundry Care	Detergents, fabric softeners	Stilbene derivatives (e.g., Tinopal)
Paper	High-quality printing paper	Diethylamino coumarin
Textiles	White/colored fabric finishing	Benzoxazole compounds
Plastics	PVC, polyester whitening	Biphenyl-stilbenes

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3. Advantages

Performance:Increase whiteness index by 20–30%Enhance color vibrancy (e.g., brighten dyed fabrics)Safety & Compliance:Non-toxic (OECD 301D biodegradable)Non-flammable (Flash point >200°C)REACH/EPA registered

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4. Technical Specifications

Property	Typical Value
UV Absorption Range	340–370 nm
Emission Range	420–470 nm
pH Stability	2–12 (compatible with detergents)
Thermal Stability	Up to 250°C (for plastics)

Declaration: The products displayed on this website are intended exclusively for industrial applications or scientific research. They are not intended for medical, pharmaceutical, or food use. In accordance with applicable laws and regulations, purchasing organizations must hold valid qualifications and approvals.