Optical Brightener BA for cotton and paper：
| Product name | Optical Brightener BA |
| Other name | Fluorescent Brightener 113 |
| CAS NO | 4193-55-9 |
| C.I.NUMBER | 113 |
| Chemical name | Stilbene bistriazine derivative |
| Formula | C40H42 N12O10 S2 Na |
Specification:
| Item | Specification |
| Appearance | straw yellow uniform powder |
| Stength | 100 (Highest 145%) |
| Water content, %≤ | 5 |
| Insoluble matter in water, %≤ | 0.5 |
| Fineness (180um residue) , %≤ | 10 |