STRUCTURE:

MOLECULAR FORMULA: C40H38N12O8S2Na2
MOLECULAR WEIGHT: 924.93 (As International relative Atom Mass 1997)
Max UV ABSORPTION WAVELENGHTH: 350nm
EXCUTIVE STANDARD: HG/T 3675-2007
SPECIFICATION:

APPLICATIONS:
    Fluorescent Whitening Agent ER-330 is a diphenylethylene 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 hypochloride,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 liquid. It especially used in low temperature fixing absorption polyeaster whitening.
Directions for usage and dosage: (sush as fixing absorption whitening)
PROCESS:
    polyeaster dipping heating heat kept washing drying finished products
Material and mix ratil:
    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 diping polyeaster materlals, 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 weirht is 25 kg or 50 kg each.
STORAGE: Should be stored in cool and dry place.