optical brightener MST

optical brightener MST

optical brightener MST suitable for cotton or other cellulose fiber fabrics. optical brightener MST used in continuous pad dyeing process of this kind of fabric to have the best whitening effect.

Product Details

optical brightener MST

other name: optical brightener 353, fluorescent brightener MST, fluorescent whitener MST

CAS No.: 55585-28-9 C.I.: 353

optical brightener MST suitable for cotton or other cellulose fiber fabrics. optical brightener MST used in continuous pad dyeing process of this kind of fabric to have the best whitening effect. According to optical brightener MST basic properties and staining method is introduced as follows:


Physical CharacteristicsFastness Properties
Chemical Construction:Stilbene derivativeH2O2:Stable
Appearance:Light brown transparent liquidReductant:Stable
Ionicity:negativeChlorine:Unstable
Affinity:lowChlorate:Unstable
Fluorescent Colors:White with violet lightPH:1-12
Solubility:
Storage:12 month


Performance features

A. optical brightener MST is widely used for continuous pad dyeing process of cotton and nylon fabric. Low affinity on fiber, no color different. Good performance on levelling property.

B. Good performance on Lifting property, better whiteness.

C. Wide temperature range.

D. Good performance on stability of reducant agent, and hardwater. Acid and alkali resistant (pH=1-12), work with resin finishing  in one-bath. Good whiteness effort when polyelectrolyte exists.

optical brightener MST could not be bleached with hypochlorous acid compound.


Application Method
Pad Dyeing MethodSoftening treatment
Dosage:MST 4-25g/LDosage:MST 5-30g/L
Process:Pad (mangle expression 70%) – drying (110-130℃)softer (nonionic):15-30g/L


Process:Pad (expression 70%) – drying (110-130℃)


Note:

1. Please do not use cationic additives with optical brightener MST at the same time. Because that may cause ion conflict between cation and  anion ( optical brightener agent), if so, there will be precipitation phenomenon.

2. Metal ions in water will impact the whitening effort of Optical brightener, such as Cu、Fe、Mn、Zn. In this aspect, please use metal chelating agent to remove them in advance.

3. Optical brightener agent should not expose to the sunlight directly.


Packing:

In 25kg plastic drum or as customer request.

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