Best Whitening Optical Brightener Agent SWN/MDAC(CAS NO 91-44-1) for silk ,wool
Chemical name: 7-Diethylamino-4-methylcoumarin
Molecular formula: C14H17NO2
CAS NO.: 91-44-1
C. I. 140
Molecular weight: 231.3
The same name: Uvitex SWR SWN or the brightener 61.
Property:
1. multipurpose brightener with excellent whiteness, soluble in ethanol but insoluble in water.
2. having properties of good solubility and compatibility.
Application: mainly be used as brightener of wool, natural silk, polyamide fiber and
acrylic fiber.
Process:
Soluble with ethanol before adding.
wool: 0.05-0.35% polyamide fiber: 0.05-0.3%
natural silk: 0.05-0.4% acrylic fiber: 0.05-0.8%
| Appearance | white crystal powder |
| Solubility | dissolve in ethanol and other organic solvent |
| Melting Point | 72 -73°C |
| Assay | 99% min (HPLC) |
| Volatile Content | 0.3%max |
| Ash Content | 0.1%max |
