Optical Brightener ER-330
C.I.199 CAS：13001-38-2
STRUCTURE:
CHEMICAL NAME: 1,4-Bis(2-cyanostyryl)benzene
MOLECULAR FORMULA: C24H16N2
MOLECULAR WEIGHT: 332.2 (As International relative Atom Mass 1997)
Max SPECTRUM ABSORPTION WAVWLENGHTH: 370 nm (ethanol)
Max FLUORESCENCE EMISSION WAVWLENGHTH: 435 nm
EXCUTIVE STANDARD: Q/LQH008-2003
SPECIFICATIONS:
Item |
Indices |
Appearance |
Greenish yellow slurry |
Purity |
≥ 99.0 % |
Melting point |
230-232℃ |
Grain finess (> 4μm grain) |
≤ 3 |
APPLICATIONS:
Optical Brightener ER-330 is a stilbene type compound, it is insoluble in water, but well soluble in most organic solvents. It is stable to cationic softening agent.I t can be used in the same bath with sodium hypo chloride,hydrogen peroxide and reductional bleaching agent, it is very suitable for whitening and brightening polyester fiber, acetate fiber, polyvinlye, etc. Products can be remarkably upgraded by adding ER-330. It is especially used in low temperature fixing absorption polyester whitening.
DIRECTIONS FOR USAGE AND DOSAGE:
(such as fixing absorption whitening)
PROCESS
Polyester — dipping — heating — heat kept — washing — drying — finished products Material and mix ratio: Optical Brightener ER-330 0.3-1.5% Na2SO3 (chemical grade)1.0% Lavocal AFR 1.0% Acetic acid (98%) 0.55g/L Bath ration:1:5-40 pH = 4-5 Forming the whitening liquid as the above ration and dipping polyester materials, heating to 50℃ at the speed of 1-1.5℃ per minute, holding for 30 minutes, then cooled and washing with cool water, drying and modeling to obtain the products.
PACKAGE
Packaged in plastic drum. Net weight is 25 kg or 50 kg each
Storage
Should be stored in cool and dry place.