Optical Brightener SWN 140 made in China,mainly be used as optical brightener of H-PVC,S-PVC,wool, natural silk, polyamide fiber and acrylic fiber. Also can be used for detergent. This product is a common laser dyestuff.
Chemical Name:optical brightener SWN;optical brightener MDAC,4-methyl-7-diethyl amino coumarin
Purity:99.5%
Appearance:White to light brown crystalline powder
Molecular Formula:C14H17NO2
Melting point:68.5-72℃
CAS:91-44-1/61968-71-6
C.I.NO.:140
Application:
This product is used for whitening wool, natural silk, nylon, acetate fiber, triacetate fiber.Also can be used for cotton,
cellulose fiber, acrylic fiber whitening.
The dosage is 0.05% ~ 2.0%.
Adding synthetic washing powder to the fabric can improve the appearance whiteness of the fabric after washing.
Recommended Dosage
Polyamide:0.05-0.3%
Wool:0.05%-0.35%
Cellulose acetate fiber:0.05-1.4%
Triacetate fibre:0.1-2%
Acrylic：0.05%-0.8%
