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Fluorescent brightener 199

Product Name Fluorescent brightener 199
Synonyms 1,4'-bis(2-cyanostyryl) Benzole; optical brightener 199; Brightener ER-I
Molecular Formula C24H16N2
Molecular Weight 332.3972
CAS Registry Number 13001-40-6;13001-39-3
EINECS 235-836-7;235-835-1
Molecular Structure Fluorescent brightener 199
Density 1.18g/cm3
Melting point 230-234℃
Boiling point 571.3°C at 760 mmHg
Refractive index 1.66
Flash point 272.8°C
Vapour Pressur 4.61E-13mmHg at 25°C
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