Optical Brightener BA-L
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Optical Brightener BA-L

The optical brightener BA-L is 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  CAS:12768-92-2

STRUCTURE:

 

MOLECULAR FORMULA: C40H42N12O10S2Na2

MOLECULAR WEIGHT: 960.94(As International relative Atom Mass 2005)

MAX UV ABSORPTION WAVELENGTH: 348 nm

EXECUTIVE STANDARD:HG/T3990-2007

SPECIFICATIONS  

ITEM

INDEX

Appearance

Amber transparent liquid

Fluorescent intensity (equivalent to the standard sample E130)

35±1

Viscosity (25℃), mPa.s

≤ 50

PH value

8-10

Density, g/cm3

1.0-1.3

Ionicity

anionic


PROPERTY:

The optical brightener BA-L is 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.   

            

PROCEDURE :

1. Being used in paper-making industry, add them into the paper pulp,coating solvent and surface gluing slovent. Usually dosage: 0.3-0.9% on dry pulp and dry dope.                                              

2. When whitening of the cotton,hemp or cellulose, directly adding the BA-L into the dye vat, the dosage:0.25-0.85%, bath ratio:1:20-40, the dying temperature: 60-100℅


PACKAGE:

1000kg, 200kg plastic drum or for the special demand


TRANSPORTATION:

Should be handled carefully, avoid sunlight and moisture


STORAGE:

Should be stored in cool,dry and ventilate place, and storage period should not exceed 6 months at room temperature



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