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Optical Brightener Agent MDAC/SWN (C.I.140/61)

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Optical Brightener Agent MDAC/SWN (C.I.140/61)
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CAS NO: 91-44-1
Purity: 98%
E Value: 1000
Application: Best Whitening Wool,silk
Chemical Name: 7-Diethylamino-4-methylcoumarin
High Light:

optical bleaching agent


fluorescent brightener

Basic Infomation
Place of Origin: China
Brand Name: Longpu
Certification: REACH,SGS,ISO9001
Model Number: OBA SWN ; FWA MDAC
Payment & Shipping Terms
Packaging Details: 25kg fiber drum
Delivery Time: Prompt
Payment Terms: T/T ,L/C
Supply Ability: Prompt
Product Description


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.


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.


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
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