Hostavin® 3225-2 DISP

Synergistic Light Stabilizer Mixture for Waterborne Coatings

Edition Number :
Edition Date :
October 06, 2020

Hostavin 3225-2 DISP is a 52% aqueous dispersion of a halogenated benzotriazole UV absorber combined with a low molecular weight HALS, designed for UV stabilization of paints and clearcoats.


Hostavin 3225-2 DISP is an easy to use dispersion requiring no milling or dissolving before use and can be incorporated at any stage of the paint production.
Hostavin 3225-2 DISP has been primarily developed for exterior waterborne wood coatings protection, due to its broad UV absorption profile, which is a key requirement for clearcoat systems.

Alexis Dudley
Alexis Dudley
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Product Data Sheet

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Hostavin® 3225-2 DISP

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Classification according CLP regulation (Regulation (EC) No. 1272/2008, as amended).
    Serious eye damage, Cat. 1
    Specific target organ toxicity - repeated exposure, Cat. 2
    Long-term (chronic) aquatic hazard, Cat. 2
For further information please refer to the Material Safety Data Sheet.

Chemical Compostition

Chemical Nature: 2-(5-chloro-2H-benzotriazol-2yl)-6-(1,1dimethyl-ethyl)-4-methyl-phenol + 2,2,4,4-Tetramethyl-7-oxa-3,20-diazadi-spiro []-heneicosan-21-on

Classification: 2:1 mixture of halogenated benzotriazole UV absorber + low molecular weight HALS


Delivery Specifications and (*) General Properties

CharacteristicsUnitTarget ValueTest Method
Appearance whitish-yellow dispersionA.931.0003
Solids content[%]64.8 - 68.6A.951.0001
UVA content[%]33 - 36A.022.1003
HALS content[%]16 - 19A.022.1003
*pH value ~ 7.5 
*Density (20°C)[g/cm³]~ 1.08 



Hostavin 3225-2 DISP is recommended for high performance exterior waterborne wood coating systems.

Recommended dosage level of Hostavin 3225-2 DISP:       1.0 - 3.0% (active additive on solid resin)

Packaging and Handling
Delivery form

PE drums 25 kg
Pallet 300 kg (12 drums)

Hostavin 3225-2 DISP can be stored for at least three years from the date of shipping when kept cool and dry in the orginal sealed containers.
Storage temperatures above +40°C and below +4°C should be avoided.
Hostavin 3225-2 DISP should always be well stirred prior to use, as a slight sedimentation might occur over time.

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Alexis Dudley
Alexis Dudley
Contact Person
This information corresponds to the present state of our knowledge and is intended as a general description of our products and their possible applications. Clariant makes no warranties, express or implied, as to the information’s accuracy, adequacy, sufficiency or freedom from defect and assumes no liability in connection with any use of this information. Any user of this product is responsible for determining the suitability of Clariant’s products for its particular application.<br />
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