Home/Products/Catalyst & Auxiliary/Optical Brightening Agent OB
Optical Brightening Agent OB 2018-08-10T07:42:24+00:00
Fluorescent Brightener 184

Optical Brightening Agent OB | CAS 7128-64-5/12224-40-7

  • CAS No.: 7128-64-5/12224-40-7
  • EINECS No.: 230-426-4
  • Molecular Formula: C26H26N2O2S

Product Information of Optical Brightening Agent OB

  • Product Name: Optical Brightening Agent OB
  • Molecular Weight: 430.56
  • Synonyms: 2,5-bis-(5-ter-butyl-benzoxazolyl-)thiophene; Fluorescent brightener OB; Fluorescent brightener 184

Specifications of Optical Brightening Agent OB

Items Specifications
Appearance Light yellow or milk white powder
Purity ≥ 99%
Melting point 201-205 °C
Water content ≤ 0.50%
Ash content ≤ 0.10%

2,5-bis-(5-ter-butyl-benzoxazolyl-)thiopheneProperties of Optical Brightening Agent OB

Its decomposition temperature is larger than 220 ℃. Fluorescent brightener 184 is hard to dissolve in water. It dissolves in paraffin fat, miner oil, wax and common organic solvents. The hue of the fluorescent light is blue light. The wave length of the maximum absorptive light is 375 nm (ethyl alcohol).

Applications of Optical Brightening Agent OB

Fluorescent brightener 184 can be used in whitening and brightening PVC, polystyrene, polyethylene, polypropylene, thermoplastic plastic, ABS, cellulose acetate fiber, coating, paint, ink, etc.