Optical Brightener BA
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Optical Brightener BA

The Optical Brightener BA is readily soluble in water, acid-resistant, alkali-resistant, and has much better whitening effect than VBL at pH 4.5-7. Belonging to anionic type, it can be used in the one bath with anionic or nonionic surfactants.

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Product Description

C.I.113 or 85 or 28     CAS:12768-92-2

STRUCTURE:

 

MOLECULAR FORMULA: C40H42N12O10S2Na2

MOLECULAR WEIGHT: 960.95 (As International relative Atom Mass 1991)

Max UV ABSORPTION WAVELENGHTH: 348 nm

EXCUTIVE STANDARD: HG/T3990-2007

SPECIFICATION:

ITEM

INDEX

Appearance

Light yellow uniform powder

Fluorescent Strenghth (equivalent to the standard sample)

350±10

Color Shade

Similar to Slightly Different

Moisture content                                                 

5%

Content of water-insoluble impurities 

0.5%

Fineness (residual content passed through 180μm-pore sieve )     

10%

 

PROPERTY:

The optical brightener BA is readily soluble in water, acid-resistant, alkali-resistant, and has much better whitening effect than VBL at pH 4.5-7. Belonging to anionic type, it can be used in the one bath with anionic or nonionic surfactants.


APPLICATION:

Mainly applied to whiten paper pulp, surface sizing, coating, and also applied to whiten cotton, linen and cellulose fiber as well as cellulose fabrics, and to brighten light-colored cellulose fabrics.


USAGE::

1. Being used in paper-making industry, add them into the paper pulp, coating solvent and surface gluing solvent after dissolving with the 20 times water.usual dosage: 0.1-0.3% on dry pulp or dry dope.
2. When whitening of the cotton, hemp or cellulose, directly adding the optical brightener dissolved with water into the dye vat, the dosage:0.08-0.3%, bath ratio:1:20-40, the dying temperature:60-100℃.


PACKAGE:Packed in cardboard bucket or plastic coating paper sack after being packed in plastic bag either 25 Kg or 50 Kg per bucket or sack.


TRANSPORTATION: Should be handle carefully, avoid sunlight and moisture.


STORAGE: Should be stored in cool, dry and ventilate place, and storage period shouldn't exceed 2 years.




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