Optical Brightener 4BK(87), CAS 12768-91-1
2.5-bis-(benzoxazol-2-)thiophene
| Formula | C40H40N12O16S4.4Na |  |
| MW | 1165.05 | |
| CAS# | 12768-91-1 |
Synonym Name:
Fluorescent Brightener 87(FBA 87), Fluorescent Brightener 4BK
Specification:
Appearance: Slight yellow uniform powder
Shade: Slight bluish
Water:<5%
Fineness(120 mesh residue):≤5%
Features:
>Optical Brightener 4BK is used in whitening cotton fabric and polyester/cotton blends.
Handing and Safety:
>For additional handing and toxicological information, please consult us for Maternal Safety Date Sheet.
Package:
Corrugated paper box with a liner of plastic bag.The net weight of each box is 10 kg. Or according to customers’ requirements.