liquid optical brightener

Optical Brightener Agent have Liquid Optical Brightener and Powder Optical Brightener.
For paper making using, we recommend liquid optical brightener BBU.
Liquid optical brightener BBU is easy to use, can be arbitrary proportion miscible with water,is suitable for continuous addition.
Liquid optical brightener BBU has good acid-resistance, under low PH value also has excellent whitening effect.

Product Name Optical Brightener Agent BBU Liquid (four sulfur)
CAS No 16470-24-9
C.I.No 220

Technical Index
Appearance: amber transparent liquid PH value:8.5-10.8
Density:1.1-1.2g/cm3 Viscoisty:≤80mpas lonicity:anionic

Properties and characteristics
1.Convenient to use,freely soluble in water, applicable to automatic continuous adding measuring.
2.With high acid resistance, and excellent brightening effect even at low PH value.
3.With high storage stability at normal temperature.
4.Especially applicable to brighten in coating and surface sizing.
5.With similar light fastness, acid resistance and alkali resistance with products alike

Application method
1. In coating, it can be added at any place, and its effect will be better if work with PVC, CMC and starch. Normal dosage: 0.1-1.4% (of
coating weight).
2. In surface sizing, its effect will be better if work with common starch, CMC and PVC. Normal dosage: 0.5-10g/L.
3. It can be added into pulp directly. Normal dosage: 0.05-1.2% (of absolute dry pulp).

Package  25kg per plastic drum

Liquid optical brightener BBU is very stable above 0°C.If temperature is below -3°C,it will freeze, if move to room temperature place or heating can melt,and to use effectively without any adverse effects.
Liquid optical brightener BBU product uses advanced nanofiltration technology to make it contain low salt content At room temperature, it has good storage stability.