Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

BASF Tinopal OB Fluorescent Brightener

BASF (Ciba) Thiophene-Benzotriazole series Tinopal OB is a yellow-green powder fluorescent brightener. It fits polymer whitening, with excellent thermal/light stability, low volatility, good compatibility, and pure blue effect at low dosage.


Features Of BASF Tinopal OB Fluorescent Brightener

  1. Outstanding high-temperature resistance, suitable for extrusion, injection molding and other polymer processes.

  2. Excellent weather resistance, delaying whitening attenuation in outdoor applications.

  3. Good compatibility with resins and additives, no precipitation, ensuring uniform product appearance.

  4. Strong whitening selectivity, accurately correcting polymer yellowness and enhancing whiteness.

  5. Low migration property, meeting safety requirements of high-end packaging materials.

Typical Applications Of BASF Tinopal OB Fluorescent Brightener

  1. Suitable for general and engineering plastics like PP/PE, PVC, PC and acrylates.

  2. Used in textile fibers, film products, sheet molding and plastic injection parts.

  3. Applicable in UV-curable coatings, flexographic inks and synthetic leather brightening.

  4. Fits optical performance optimization of hot melt adhesives and pressure-sensitive adhesives.

  5. Serves as yellowness corrector for plastic recycled materials to restore whiteness.

Specifications Of BASF Tinopal OB Fluorescent Brightener

PropertySpecification / Value
AppearanceYellow-green powder
Chemical CategoryThiophene-benzotriazole
Melting Range196 - 202 °C
Flash Point> 350 °C
Density (20°C)1.26 g/cm³
Vapor Pressure (20°C)2.6 x 10⁻⁸ Pa
Absorption Wavelength (λ_max)375 nm
Molar Absorptivity (K)113.0
Water Solubility (20°C)< 0.01 % (w/w)
Acetone Solubility (20°C)0.5 % (w/w)
Chloroform Solubility (20°C)14 % (w/w)
Ethyl Acetate Solubility (20°C)1 % (w/w)
n-Hexane Solubility (20°C)0.2 % (w/w)
Light Fastness (Polyolefin)5 - 6
Heat ResistanceUp to 300 °C (short-term)
Recommended Addition Level0.001 - 0.1 % (w/w) (varies by substrate)




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