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Optical brightener SWN
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Optical brightener SWN

  • Product name: Optical Brightener SWN
  • Main Ingredient: coumarin
  • C.I.:  140
  • CAS: 91-44-1
  • Synonyms:  Optical brightener SWN, Coumarin 1, coumarin 460, Optical brightener MDAC, 7-(diethylamino)-4-methyl-coumarin, OBA 140, Fluorescent whitening agent 140, Optical brightening Agent 140, Fluorescent Brightener 140, OPTICAL BRIGHTENER 140, Fluorescent brightening agent 140,  Uvitex WSG, HakkoL P, Uvitex SWN, SWR, Leucophor DC, WS, Blankophor FBP,
  • Application:
    In whitening and brightening of wool, silk, acetate fiber, triacetate fiber, etc.
    Also can be used in cotton, plastic, and chromatically pressed paint and added into resin to whiten the fiber cellulose.
    Optical brightener SWN is also a common laser dye.
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Description

Description

1.Properties of Optical Brightener SWN
  • Appearance: White to light brwon Crystalline Powder
  • Content: 99.50%
  • Melting point: 70-74℃
  • Ash: 0.5%
  • Max Absorption Wavelength:375nm (in ethanol)
2. Synonyms/Alternative:

Optical brightener SWN, Coumarin 1, coumarin 460, Optical brightener MDAC, 7-(diethylamino)-4-methyl-coumarin, OBA 140, Fluorescent whitening agent 140, Optical brightening Agent 140, Fluorescent Brightener 140, OPTICAL BRIGHTENER 140, Fluorescent brightening agent 140,  Uvitex WSG, HakkoL P, Uvitex SWN, SWR, Leucophor DC, WS, Blankophor FBP,

3. Feature:

Optical brightener SWN is soluble in ethanol and ethylene glycol, soluble in acidic aqueous solutions, and soluble in resins, varnishes, and some organic solvents. Its solubility in water is only 0.006%. Do not use in one bath with Sodium Chlorite.

4. Common Application and Recommend Dosage
  • In whitening and brightening of wool, silk, acetate fiber, triacetate fiber, etc.
    Dosage: Chinlon:0.05-0.3%, wool: 0.05-0.35%, acetate fiber: 0.05-1.4%, Triacetate fiber: 0.1-2%, Acrylic fiber: 0.05-0.8%.
    Mix it with sulfuric acid or hydrochloric acid to form a salt, or mix it with organic acids (such as tartaric acid, citric acid, and oxalic acid), or add a solvent to increase solubility and a dispersant to make a solution for applications. Add it to textiles to give a reddish-violet shade.
  • Also can be used in cotton, plastic, and chromatically pressed paint and added into resin to whiten the fiber cellulose.
  • Add in detergent to improve the whiteness of washed fabrics. Active with pH: 3-11.
  • optical brightener SWN is also a common laser dye.
5 Packaging & Storage

25KG fiber drum lined with PE liner.
Should be stored in a cool, dry, and ventilated place, and the storage period should not exceed two years.

6. Transportation and Safty

Avoid inversion, sunlight, moisture, and crash. Avoid damaging the package.
Non Hazardous. Stock as ordinary chemicals. Wear Protective goggles and gloves while using. And avoid direct contact with skin and eyes. Soap clean if the skin is contaminated.

Shandong Grand Chemical Co., Ltd, is a professional manufacturer of optical brighteners in China.
If you have any inquiries about optical brighteners for textiles, please do not hesitate to contact us via sales@obachemical.com, or WhatsApp: +86 13173009832.

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