optical brightener BBU

optical brightener BBU

optical brightener BBU good water solubility, dissolve in 3-5 times of boiling water by volume, optical brightener BBU 300g can be dissolved per liter of boiling water, 150 g can be dissolved per liter of cold water.

Product Details

optical brightener BBU

other name: optical brightener 220, fluorescent brightener BBU, fluorescent whitener BBU

C.I.: 220

CAS NO.: 16470-24-9

Molecular Formula: C40H40N12Na4O16S4

Molecular Weight: 1165.04

Specification:

ItemsIndex of quality
AppearanceLight yellow uniform powder
Fluorescent intensity(equivalent to standard E370)100±3
Whiteness(Difference with the standard)≥-3
Moisture≤5%
Insoluble impurity in water≤0.5%
Fineness(Residue on 250µm sieve)≤10%


Characteristics and advantages:

1、optical brightener BBU good water solubility, dissolve in 3-5 times of boiling water by volume, optical brightener BBU 300g can be dissolved per liter of boiling water, 150 g can be dissolved per liter of cold water;

2、optical brightener BBU is insensitive to hard water and the whitening effect will not be affected by Ca+、Mg2+;

3、Resistant to peroxide bleach, including reductant(sodium hydrosulfite)bleaching agent;

4、Average acid resistance, PH>7 is the optimum whitening condition;

5、Anionic, blue light.


Application fields:

1、optical brightener BBU Used for whitening of cotton fiber and mucilage glue fiber;

2、optical brightener BBU Suitable for white discharge printing pulp;

3、optical brightener BBU Whitening during paper pulp;

4、optical brightener BBU Whitening during surface sizing procedure;

5、optical brightener BBU Whitening during coating procedure.


Method:

Dip 60-100 ℃ temperature, residence time of 20-40 minutes, bath ratio: 1:20-30, dosage: 0.1-0.5%.

Package: 25KG cardboard drum

Storage period: two years

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