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SperseBright OB

1 of 2 products in this brand
SperseBright OB is ideal for adhesives, coatings, acrylics, and urethanes, as well as rigid and plasticized PVC. It is a heat-resistant, solvent-soluble, and chemically stable fluorescent whitener supplied in a fine powder form that is easier to dissolve and/or disperse compared to conventional product forms of larger particle sizes. This form is ideal for screen-printing and coating applications. SperseBright OB can be used in combination with antioxidants and certain UV stabilizers that absorb UV-B radiation.

Functions: Optical Brightener

Dye Type: Fluorescent Dyes

Technical Data Sheet
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Knowde Enhanced TDS

Identification & Functionality

CASE Ingredients Functions
Plastics & Elastomers Functions
Chemical Structure

SperseBright OB - Chemical Structure

2,5-Thiophenediylbis(5-tert-butyl-1,3-benzoxazole)

Features & Benefits

Applications & Uses

Guidelines for Use
  • Plastic and fiber applications: 50 to 1000 ppm
  • Polyurethane Foam: 1000 to 2500 ppm

Due to the high melting temperature, take care to ensure complete dispersion in the substrate.

Properties

Color
Physical Form
Appearance
Light green to yellow crystalline powder
Typical Properties
ValueUnitsTest Method / Conditions
Melting Point192 - 208 °C
Specific Gravity1.26
Ash Contentmax. 0.5%
Volatilesmax. 0.5%
Solubility
ValueUnitsTest Method / Conditions
Acetone0.2g/100 ml
Butanol0.2g/100 ml
Carbon Tetrachloride5g/100 ml
Chlorobenzene10g/100 ml
Chloroform14g/100 ml
Cyclohexanone3g/100 ml
Dimethvlformamide0.8g/100 ml
Ethylene Glycol0.2g/100 ml
n-Hexane0.2g/100 ml
Methanol0.05g/100 ml
Methyl Ethyl Ketone (MEK)1g/100 ml
Methylene Chloride/Methanol (9:1)2g/100 ml
Tetrahydrofuran5g/100 ml
Toluene5g/100 ml

Regulatory & Compliance

Certifications & Compliance
Chemical Inventories