Detailed Product Description

Optical Brightener SWN C.I.140
CAS: 91-44-1
Main Chemical Composition: Coumarin

CAS: 61968-71-6

C.I.NO.: 140

Formula: C14H17NO2

Molecular Formula: 231.28

Appearance: white crystalline powder

Purity%: ≥ 99%

Melting Point: 70-71.5°C

Properties: This fluorescence brightener SWN is mainly used for brightening the wool, natural silk, nylon, acetate fiber and the cellulose triacetate. Also used for brightening the cotton and acrylic fiber. Can add the resin in the detergent for washing the fabrics, can improve the fabrics' external whiteness after washing within the range of Ph=3-11. Also can be used on the coating paper and used at the aspect of plastic and coating of chromaticity printing.
Use Level:
Use level of each fiber: nylon:0.05-0.3%,wool:0.05-0.35%,acetate fiber:0.05-1.4&,cellulose triacetate:0.1-2%,acrylic fibre:0.05-0.8%