Optical Brightener BA

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:

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.