[CHEMICAL NAME] 4.4'-bis(2-disulfonic acid styryl) biphenyl

[Molecular weight]  562.6

[STRUCTURAL FORMULA]

[Application range and recommended dosage]

TYPE	Dosage (%w/w in detergents)
General washing powders	0.01-0.10
Concentrated washing powders	0.02-0.20
Liquid detergents	0.10-0.30
Scented soaps,soaps	0.02-0.20
Fabric softening agents	0.10-0.30
Washing cream	0.01-0.10

[Specifications]

E(1%/cm)	1105-1181
Indissoluble substance	≦0.5%
Particle Size	95% through 50 mesh screen

[Physical properties]

Solubility in water	25℃,25g/l
	70℃,100g/l
	95℃,300g/l
λmax in ultra-violet range	348-350nm
Ionic character	anion

[C.I.NO] C.I.351

[CAS NO.]27344-41-8

[Characterization]

CBS-X is an optical fluorescent brightener of the distyryl biphenyl class,suitable for the optical brightening of synthetic.

Detergents,scented soaps,and soaps at all stages of processing.

[Feature]

CBS-X features high whitening strength,excellent fastness,to chlorine/oxygen bleaching,washing,and dry/wet light fastness,level dyeing properties.It is liable to biology degradation.Even in low temperature,the product has a high solubility in water,especially suitable for liquid detergent.CBS-X is mainly used as the optical brightening agents of cotton,linen,silk,wool,polyamide fibers and papers etc.

[Guidelines for use]

CBS-X can be added to synthetic detergents,scented soaps,soaps or dissolved in an ingredient and blendend equably at all stages of processing.

[Appearance]

Flow free bright yellowish granule.

[Storage]

Keep in cool dry place,keep away form sunlight,provided the usual precautions for handing chemicals are observed.

[Package]

Paper drum lined with plastics bags,net weight 25kg.

[Handing&safety]

CBS-351 can be handled in accordance with the ususl rules for industrial chemicals.Avoid dust formation and ignition sources.