Optical brightener OB (C.I. 184 )

MF

C26H26N2O2S

EINECS No

230-426-4

CAS No

7128-64-5

Chemical  Name

2,5-Thiophenediylbis(5-tert-butyl-1,3-benzoxazole)

MF

C26H26N2O2S

Appearance

Light green powder

Purity

≥98%

Melting point

196-202 °C

Volatile:

<0.5%

Package

20kg per carton, 25/30kg per fiber drum with PE liner, or as per the customers' requirements.

Applications:  

It is widely used in thermoplastic such as PVC, PE, PP, ABS, PS,unsaturated resin, paint, ink and oil soluble coatings.

Properties: 

The product is light green or green powder, non-toxic and tasteless, can dissolve in alkane, fat, mineral oil, paraffin and most organic solvents, the absorption spectra of the largest value for 375 mm (in ethanol).

Dosage:

PVC: White 0.01~0.05%        Transparent: 0.0001~0.001%(to improve the brightness)

PS: White 0.001%                Transparent: 0001~0.001%         

ABS:Natural color 0.01~0.05%      White 0.01-0.05%

PE,PP: Colorless 0.0005~0.001%   White 0.005~0.05%