Optical brightener SWN

CAS NO.: 91-44-1

C.I. NO.: 140

Send Inquiry


Optical brightener SWN for wool


CAS NO.: 91-44-1

C.I. NO.: 140

Molecular formula: C14H17NO2

Molecular weight: 231.3



Appearance: white crystal powder

Shade: blue

Purity: 98.5%

Melting point: 68.5-72.0℃

Ash content: 0.15% max

Solubility: soluble in acid water, ethanol, and other organic solvents


Application and recommended dosage:

Whitening for wool, silk, nylon, acetic acid, and triacetate fibers.

Whitening for cotton, cellulose, and acrylic fibers. The dosage ranged from 0.05% to 2.0%.

Added to synthetic detergent powder used in washing fabrics.


Package and storage

25kg per drum. Store in a dry place, avoid light.