OPTICAL BRIGHTENER ER-2

C.I.199:1 CAS：13001-38-2

CHEMICAL NAME: 1,4-Bis(2-cyano styryl)benzene

MOLECULAR FORMULA: C24H16N2

MOLECULAR WEIGHT: 332.2 (As International relative Atom Mass 1997)

SPECIFICATIONS:

Item	Indices
Appearance	Greenish yellow powder
Purity	≥ 99.0 %
Melting point	188-192℃
Grain finess (> 4μm grain)	≤ 3

APPLICATIONS:

Optical Brightener ER-2 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-2 liquid. It especially used in low temperature fixing absorption poly easter whitening.

Directions for usage and dosage: (such as fixing absorption whitening)

PROCESS:

Poly easter — dipping — heating — heat kept — washing — drying — finished productsMaterial and mix ratil:

Optical Brightener ER-2 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 poly easter 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.

SHANGHAI JECA COLOR CO.,LTD.

ER-2