Pigments & Colorants
REACH
Fluorescent brightener 378
CAS Number
40470-68-6
EC Number
254-935-6
Abbreviation
CBS-127
What is Fluorescent brightener 378?
Fluorescent Brightener 378 (CAS 40470-68-6), commercially known as CBS-127, is a stilbene-based optical brightening agent used to enhance the perceived whiteness and brightness of substrates.
Where is Fluorescent brightener 378 used?
- Plastics and polymer processing: incorporated into polyolefins, PET, and engineering resins for high-whiteness aesthetics in packaging films, molded parts, and synthetic fibers
- Paper and board: applied during coating or surface sizing to meet brightness specifications for premium print and packaging grades
- Textiles: used in finishing baths for synthetic fabrics where conventional washing-based brighteners are unsuitable
- Coatings and adhesives: added to white and near-white systems
- It counteracts yellowing in finished materials by absorbing UV light and re-emitting it as visible blue fluorescence.
Commercial specifications
- Technical and industrial grades; specifications typically cover active content, melting point range, and solvent compatibility
- Packaging in kilogram quantities through to bulk bags
Other Names (Synonyms)
CBS-127|4,4'-Bis(2-methoxystyryl)-1,1'-biphenyl|1,1'-Biphenyl-4,4'-bis[2-(methoxyphenyl)ethenyl]|RefChem:1069270|4,4'-BIS(2-(2-METHOXYPHENYL)ETHENYL)-1,1'-BIPHENYL|4,4'-Bis(2-methoxystyryl)biphenyl|4,4'-bis(O-Methoxystyryl)-L,L'-biphenyl|C30H26O2
What are the physical properties of Fluorescent brightener 378?
Melting Point 216-222°C
Boiling Point 590.3±50.0 °C(Predicted)
Density 1.133±0.06 g/cm3(Predicted)
Color Light lemon (hint of lime), fluorescent
Form powder
Vapor Pressure 10Pa at 25℃
Log P 7.7 at 25℃
Which trade and regulatory codes apply to Fluorescent brightener 378?
HS Code 3204200090
Storage Class 10 - Combustible liquids
WGK (Germany) nwg