| Identification | Back Directory | [Name]
Fluorescent Brightener 191 | [CAS]
12270-53-0 | [Synonyms]
OBA 191
uvitex sfc
Phorwite CL
Blankophor Ch
blankophor cl
Blankophor CLE
OPTICAL BRIGHTENER 191
fluorescent brightener 191
FLUORESCENT BRIGHTENER CL-L
OPTICAL BRIGHTENER CL C.I.191
OPTICAL BRIGHTENING AGENT 191
Optical Brightening Agent CL-L
C.I. Fluorescent Brightener 191
Fluorescent brightening agent 191
Fluorescent Brightener 191 ISO 9001：2015 REACH | [Molecular Formula]
C30H20N6Na2O6S2 | [Molecular Weight]
670.63 |
| Questions And Answer | Back Directory | [Uses]
Fluorescent whitening agent 191 absorbs high-energy near-ultraviolet light, causing its molecules to enter an excited state. The excited molecules then transition to a lower-energy ground state and emit fluorescence. Due to the energy loss, the emitted fluorescence wavelength becomes longer, approximately 450 nm blue light. The yellow color of yellowed items can be compensated by the blue light reflected by the fluorescent whitening agent, thereby increasing the apparent whiteness of the items. |
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