Fluorescent Brightener OB

Fluorescent Brightener OB is used as an brightener and to reduce the yellowness of a polymer. Mainly used as thermoplastic (PVC, PS, PE, PP, ABS) optical brightener. Also for coatings, printing inks, paints, dyes, manufactured fibers, synthetic leather, waxes, fats, and oils. Recommend indoor use only.

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Product Description

Fluorescent Brightener OB, Optical Brightener OB, Uvitex/Tinopal OB
Chemical Name:
2,5-Thiophenediylbis(5-tert-butyl-1,3-benzoxazole)

Formula C26H26N2O2S
Optical brightenerob(tinopal OB) chemical structure
MW 430
CAS# 7128-64-5
Synonym Name:
Uvitex Ob, Tinopal OB, Fluorescent Brightener 184 (FB 184) , C.I.184, Fluorescent Brightener OB

Specification:
Appearance Slight greenish yellow powder
Dosage 0.01-0.05%
Melting point 196-200℃
Purity ≥99%
Solubility (g/100 g solution) at 20° C:
Acetone 0.5
Chloroform 14
Dimethylformamide 0.8
Dioxane 2
n-Hexane 0.2
Methanol ＜0.1
Methylethylketone 1.3
Tricresylphosphate 0.8

Xylene 5

Application:
Features:Brilliant bluish whitening effects; excellent heat resistance; high chemical stability; good compatibility in a wide range of resin.

Optical Brightener OB is used as an brightener and to reduce the yellowness of a polymer. Mainly used as thermoplastic (PVC, PS, PE, PP, ABS) optical brightener. Also for coatings, printing inks, paints, dyes, manufactured fibers, synthetic leather, waxes, fats, and oils. Recommend indoor use only.

If OB must be used in combination with a UV absorber, the absorption spectrum of the latter must leave an open window in the near UVA for the optical brightener ob.

Recommended concentrations:0.02-5% depend on the application and degree of desired whiteness.

Handing and Safety:
FDA approved.
For additional handing and toxicological information, please consult us for Maternal Safety Date Sheet.

Package:
25kg per fiber drum with pallet
Optical Brightener Uvitex OB TDS & MSDS is available any time.

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