Ciba Specialty Chemicals

Coating Effects Segment

Ciba® EFKA® 6225

Edition: 05.08.2005, Basle  2005 Ciba Specialty Chemicals Inc. Page 1 of 2

General EFKA 6225 stabilizes all kinds of pigments and extenders in waterand solvent-based systems, especially in decorative coatings. 

In addition it makes polar ingredients of universal colorants more 

compatible with non-polar solvent-based paints into which they may 

be incorporated. This results in:

ß maximum color development of the colorant based on EFKA 

6225

ß higher pigment loading in colorants

ß optimum color acceptance of universal colorants in base-paints

Chemical Composition Fatty acid modified polyester

Physical Properties Active ingredients : 100%

Density at 20 °C : 1.02 - 1.06 g/cm3 DIN 51757

Acid value : 47 - 51 mg KOH/g DIN 53402

Amine value : 45 - 50 mg KOH/g DIN 16945

Color : max. 18 ISO 4630

Appearance : brownish liquid

Applications EFKA 6225, used as wetting and dispersing agent, is considered 

suitable

for VOC-free applications, particularly universal colorants. 

When using universal colorants in decorative paints, the addition of 

EFKA 6225 to the base paints (water and solvent) can increase

compatibility and color acceptance, especially in water-based and 

ultra-low aromatic content decorative paints.

Recommended concentrations 

EFKA 6225 can be incorporated into the mill-base or used as postadditive.

To reach lowest viscosity, EFKA 6225 should be neutralized to pH 8 -

8.5, before adding to the mill-base.

Calculation method for the required amount of active ingredient on 

pigment:

For universal colorants: 5 - 10% for inorganic pigments 

10 - 20% for organic pigments 

In addition in base-paints: 0.5 - 1.5% on total base-paints
Ciba®

 EFKA® 6225

Edition: 05.08.2005, Basle  2005 Ciba Specialty Chemicals Inc. Page 2 of 2

Safety and Handling EFKA 6225 should be handled in accordance with good industrial 

practice. Detailed information is provided in the Safety Data Sheet.

Storage EFKA 6225 should be stored in a cool dry place. When kept in an 

original unopened container, it will keep up to 5 years from the date 

of manufacture. The expiry date is indicated on the container.

Packaging packaging information is available on request through our local

representative

Trademark EFKA is a registered trademark.

Important Notice IMPORTANT: The following supersedes Buyer’s documents. SELLER

MAKES NO REPRESENTATION OR WARRANTY, EXPRESS OR IMPLIED, 

INCLUDING OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR 

PURPOSE. No statements herein are to be construed as inducements 

to infringe any relevant patent. Under no circumstances shall Seller 

be liable for incidental, consequential or indirect damages for

alleged negligence, breach of warranty, strict liability, tort or

contract arising in connection with the product(s). Buyer’s sole

remedy and Seller’s sole liability for any claims shall be Buyer’s

purchase price. Data and results are based on controlled or lab work 

and must be confirmed by Buyer by testing for its intended

conditions of use. The product(s) has not been tested for, and is 

therefore not recommended for, uses for which prolonged contact 

with mucous membranes, abraded skin, or blood is intended; or for 

uses for which implantation within the human body is intended.