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Fluorescent Brightener 393 Optical Brightener OB-1 CAS:1533-45-5
Name: Fluorescent Brightener 393
CAS:1533-45-5
MF: C28H18N2O2
Physical and chemical index:
Appearance Yellow greenish powder
Content ≥98.0%
Melting point 353 — 359℃
Mesh size ≥800mesh (or customize)
Maximum absorption spectral wavelength 374nm
Maximum fluorescence emission wavelength 434nm
Tint Near to minor, compared with standard
CIE L*a*b* L*≥102; a*≤-20; b≥50
Fluorescent Intensity (E1%1cm) ≥2000
Volatile content ≤0.3%
Ash content ≤0.5%
Contamination control ≤5’
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