Fluorescent Whitening Agent VBU
Properties: Fluorescent Whitening Agent VBU, also called acid-resistant Whitening Agent VBU, is a derivative of diphenylethylene bistriazine. It has an appearance of light yellow powder, anature of anion and an acid and alkali-resistance of PH2~10. This whitening agent can be used in a bath together with anionic or non-ionic surfacant, anionic dyes and synthetic resin.
Applications: Having a rather strong acid and chlorine-resistance, VBu is mainly use for Whitening white cotton or viscose products and suitable for one-bath whitening of cotton fabric in resin finishing liquor. It can be used for whitening knitted undershirts to prevent them from being yellowed by sweat stain.
Item |
Indices |
Appearance |
white even-sized powder |
Whitening intensity |
equivalent to the 100 points of the standard agent |
Hue |
slightly different from the standard agent |
WCIE(whiteness difference between DMS and the standard agent) |
≥-3.0 |
Moisture content |
≤5% |
Content of insoluble impurities |
≤0.5% |
Fineness (quantity of residue on sieve having 180um meshes) |
≤10% |
Packaging and storing: Packaged in cardboard barrels, 20kg or 25kg each. Stored in cool and dry place.
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