Optical brightener 5BM is applicable to whiten cellulose fiber and polyamide fiber, is also one of excellent brighteners used in detergent industry.

1. Formula: C38H38N12O8S2Na2

2. Molecular weight: 900.84 (As international relative Atom Mass 1997)

3. Max UV absorption wavelength: 349nm

4. Max fluorescent emission wavelength: 440nm

5. Character: Show nionic character and optical blue color

6. Exclusive standard: Q/LQH012-2007

7. Appearance: yellow uniform powder

8. Fluorescent strength (equivalent to the standard sample): 100±3

9. The solubility in distilled water at 30℃: ≥2.5g

10. The extinction value of 10 ppm product: ≥0.483

11. Moisture content: ≤5%

12. Content of water-insoluble impurities: ≤0.5%

13. Fineness (residual content passed through 250μm-pore sieve): ≤10%

14. Property: It is yellow uniform powder, soluble in water and has good stability to chlorine bleaching

15. Storage: STORAGE: should be stored in cool, dry and ventilate place, and storage period should not exceed 2 years