Our factory, Anhui Lixing Chemical Co., Ltd., is a high-tech enterprise specializing in the production of fine chemicals. The company's leading products include Ether series, oil agent, Silicone series products,which are mainly used in Medicine, Electronic chemicals, Printing ink, coating, Chemical fiber, Pesticides and other industries, with an annual production capacity of more than 10,000 tons. Please click on the link below to visit the website, and we would much appreciate your enquiries.
Our current business as below:
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Product name: |
7-Diethylamino-4-methylcoumarin（fluorescent whitening agent SWN） |
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CAS NO. |
91-44-1 |
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Molecular formula |
C14H17NO2 |
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Molecular weight |
231.3 |
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Properties |
Rice white crystal |
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Item |
Specification |
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purity |
99 |
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Melting point |
71-74℃ |
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volatile matter |
≤0.5% |
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ash |
<0.05% |
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ionic |
nonionic |
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Main ingredients |
Coumarin derivatives |
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Dyed color |
Neutral color |
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Others |
This product is mainly used for the whitening of wool, feathers and silk, but also can be used in the whitening and brightening treatment of acetate fabric.Having good wet fastness characteristics;It is suitable for finishing and continuous processing. This product also has a liquid form product, product name:AW-LThe whitening feature is equivalent to the Leucophor WS ofClariant, which is very superior in water solubility; Acid resistant, hard water, and no alkali. Stabilize the reducer. |
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usage way |
Exhaust dyeing process：Texbrite SWN 0.05-0.15% o.w.f 90℃×10-60minutes Fluorescence whitening agent SWN is soluble in ethanol and glycol, acid aqueous solution, resin, varnish and some organic solvents, whereas in water solubility is only 0.006%. Commercialized products usually need to associate it with sulfuric acid or hydrochloric acid into or after salt and organic acid (such as tartaric acid, citric acid, oxalic acid), or to join and dissolved substances to improve solubility of dispersant type, made of a solution. Therefore, it is necessary to use this product before it is fully dissolved. |
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