2,5-Bis (5-tert-butyl-2-benzoxazolyl) thiophene (also known as fluorescent brightener 184)1 is used as an optical brightener, which converts UV light into visible light. It is also used as a fluorescent brightener for thermoplastic resins of polyvinyl chloride, acrylic resin, polyester fiber, thermoplastic plastic, ABS, cellulose acetate fiber, paint, coating and printing ink. It is also useful in detecting the presence of thin-film electrical contact lubricants2-4.
- https://pubchem.ncbi.nlm.nih.gov/compound/bbot#section=Top
- https://www.alfa.com/zh-cn/catalog/A14928/
- http://www.xcolorpigment.com/FLUORESCENT-BRIGHTENER-OB.html
- http://www.offerchems.com/products/catalyst-auxiliary/fluorescent-brightener-184-cas-7128-64-5/
light yellow-green crystals
Optical brightener additive in polymers, fibers, films, inks, laquers, and paints. In liquid scintillators.
2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene is used as an optical brightener which converts UV light into visible light. It is also used as a fluorescent brightener for thermoplastic resins of polyvinyl chloride, acrylic resin, polyester fiber, paint, coating and printing ink. It is also useful in detecting the presence of thin-film electrical contact lubricants.
Flammability and Explosibility
Not classified
Low toxicity by ingestion. Whenheated to decomposition it emits toxic vapors of NOx andSOx.
Properties and Applications
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TEST ITEMS
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SPECIFICATION
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APPEARANCE
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LIGHT YELLOW OR MILK WHITE POWDER
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SHADE
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LIGHT YELLOWISH
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METLING POINT
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201-202
°
C
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PURITY
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99% min
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FINENESS
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300 mesh min
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SOLUBILITY
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hardly soluble in water,but soluble in paraffin, mineral oils and ordinary organic solvents.
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