High purity 2,2'-(1,2-Ethenediyldi-4,1-phenylene)bisbenzoxazole CAS NO.1533-45-5

product name:

2,2'-(1,2-ethenediyldi-4,1-phenylene)bisbenzoxazole

synonyms:

4,4'-bis(2-benzoxazolyl)stilbene;2,2'-(1,2-ethenediyldi-4,1-phenylene)bisbenzoxazole;2,2'-(vinylenedi-p-phenylene)bisbenzoxazole;2,2’-(1,2-ethenediyldi-4,1-phenylene)bis-benzoxazol;fluorescentbrightener393;fluorescent brightener ob-1;optical brightening agent ob-1 c. i. 393;opticalbrighteningagentob-1c.i.

cas:

1533-45-5

mf:

c28h18n2o2

mw:

414.45

product categories:

industrial/fine chemicals;stilbenes;building blocks;heterocyclic building blocks;oxazoles;brightener

mol file:

1533-45-5.mol

chemical properties

melting point

>300 °c(lit.)

boiling point

566.8 °c at 760 mmhg

density

1.281 g/cm3

vapor pressure

2.79e-12 mmhg at 25°c

flashing point

285.1 °c

storage temp.

-20°c

solubility

insoluble in water, but soluble in high boiling point organic solvents such as phenyl-chloride.

stability

stable. incompatible with strong oxidizing agents.

usage and synthesis

chemical properties

bright yellow crystalline powder

usage

fluorescent brightener agent ob-1 is especially suitable for shaping various kinds of plastics and their products under high temperature. it has an extra ideal whitening effect on polyester-cotton blend fabric. it can be used for whitening polyester melt. this whitening agent is similar to whitex snk, uvitex ert and eastobrite ob-1 made in foreign country.