Structural formula

C36H34N12O8S2NA2

Appearance

Light yellow green powder

Strength

标准品100%+2

PH 值

8-10.5

密度（20℃）

1.20g/cm

粘度（20℃）

≤80mpa.s

Solubility

In use, it can be dissolved in any proportion with water

Performance and characteristics

Fluorescent whitening agent VBL is a typical product of bis (triazinylamino) fluorescent whitening agent. It is soluble in 80 times of soft water and has an anionic property. Its acid and alkali resistance is pH = 6-11, and the pH of dye bath is 8-9. In the acidic solution, the fluorescence gradually weakened and turned yellow due to the strengthening of acidity. It is resistant to hard water to 300ppm, free chlorine to 0.25%, copper, iron and other metal ions, stable to powder, but not high temperature baking. It can be used in the same bath with anionic surfactant or dye, non-ionic surfactant and hydrogen peroxide