Optical Brightener OB-1 TDS

Optical Brightener OB-1 (TDS) is a heat resistant and chemically stable optical brightener that increases whiteness and provides brighter looking colors. Optical Brightener OB-1 (TDS) is used to offset the yellowness of a polymer and to yield a whiter appearance. Optical brighteners OB-1 (TDS) create brilliance by a fluorescence process involving absorption of invisible UV light and emission of visible blue light. Optical Brightener OB-1 (TDS) is useful in polyester and nylon fibers as well in high temperature engineering plastics. 

Optical Brightener OB-1 TDS
Product Name Optical Brightener OB-1   
Chemical Name 2.2’-(4.4’-diphenol vinyl) dibenzoxazol
CAS No. 1533-45-5
C.I. No. 393
Structural Formula
Molecular Formula C28H18N2O2
Molecular Weight 414 
Technical Index Appearance：Greenish/yellowish powder
Molecular weight:414.4    Melting Point:356℃～360℃
Purity: ≥98.5%     Fineness: ≧200 mesh
Volatile content: ≦0.5%    Ash content :≦0.5%
Uses Mainly be used in whitening of polyester and plastic, as well in
whitening of Nylon during polymerization. 
For whitening of polyester and nylon; also used in ABS, PS,PVC, HIPS, PA, PC, PP, PE,PET,EVA, PVC, etc.    
Rate of use: (per 1000kg of substrate)   Polyester: 75-300g  EVA, PP, nylon: 75-200g
Package 25kg per fiber drum

STOREAGE: Optical brightener OB-1 (TDS) should be stored in a cool, dry area. Extended storage at elevated
temperatures or exposure to direct heat or sunlight could reduce product life. Keep Container sealed when not in use