Chemical Name:
4.4-bis(5-methyl-2-benzoxoazol)-ethylene
| Formula | C29H20N2O2 |  |
| MW | 442 | |
| CAS# | 5242-49-9 |
Synonym name:
Hostalux KSN, Fluorescent Brightener 368 (FB 368) , c.i.368
OPTICAL BRIGHTENER 368；Fluorescent Brightener KSN;FBA 368
Specification:
| Appearance | Light yellow green powder |
| Assay | ≥99% |
| Melting point | 250-300℃ |
| Density | 1.261g/cm3 |
| Ash content | ≤0.5% |
| Shade | blue-violet light |
| Fineness | ≥100 mesh |
| Solubility | insoluble in water, soluble in high-boiling organic solvents such as trichlorobenzene. |
Features and Uses:
1. It is suitable for whitening polyester, polyamide, polyacrylonitrile and other fibers, silk fabrics and wool fabrics.
2. Widely used in film, injection molding and extrusion molding materials, suitable for all plastic processing.
3. It is very suitable for whitening at any processing stage of synthetic polymers, including the polymerization stage.
Reference dosage:
The general whitening reference dosage for plastic substrates is 0.002-0.03%, that is, the amount of fluorescent whitening agent KSN added is about 10-30 grams per 100 kg of plastic raw materials.
The reference dosage of brightener in transparent plastics is 0.0005 to 0.002%, that is, 0.5-2 grams per 100 kilograms of plastic raw materials.
The reference dosage of brightener in polyester resin (polyester fiber) is 0.01-0.02%, that is, about 10-20 grams per 100 kilograms of resin.
Pack：
25kg/drum
Storage:
Stored in a cool dry place out of direct sunlight.
