Cobalt Octoate

Cobalt 2-EthylHexanoate

  • Cobalt octoate is a primary/active drier
  • Cobalt drier is the most widely used drier in coating
  • It is primarily an oxidation catalyst that acts on top of the coated film (Surface Drier)
  • Cobalt octoate has a deep blue color, and if used at higher concentrations may affect the color of the paint
  • Cobalt octoate prevents water vapor present in atmosphere from penetrating the paint film
  • It is generally used in combination with other auxiliary and through driers
  • Cobalt drier is usually added at 0.05 to 0.4 % based on vehicle solids
  • It preferably should be added as near as possible to the end of the manufacturing process
  • To prevent a very quick initial drying which would result in surface wrinkling, the dosage of cobalt drier should be chosen precisely
  • It accelerates the catalytic effect of Methyl ethyl ketone (M.E.K.) Peroxide in polymerizing unsaturated polyester (UPR) resins.

 

 

Quick info

Categories: ,

Applications

  • Used as paint drier for solvent-borne and water-borne coatings
  • Used as rubber adhesion promoters (solid phase of cobalt octoate)
  • Used as printing Ink drier
  • As accelerator for unsaturated Polyester resins

 

 

Quick Details

Grade

Industrial

CAS Number

136-52-7

EINECS Number

205-250-6

Shelf Life

1 year

The Grades

Product Code

Chemical Name

Metal Content %

Color

Appearance

OCTitis® Co-12

Cobalt Octoate 12%

11.8-12.2

Dark Violet

Clear Liquid

OCTitis® Co-10

Cobalt Octoate 10%

7.8-8.2

Dark Violet

Clear Liquid

OCTitis® Co-8

Cobalt Octoate 8%

5.8-6.2

Dark Violet

Clear Liquid

OCTitis® Co-6

Cobalt Octoate 6%

5.8-6.2

Dark Violet

Clear Liquid

OCTitis® Co-3

Cobalt Octoate 3%

2.8-3.2

Dark Violet

Clear Liquid

Test Standards

Num.

Issue

Code

Topic

1

Metal Content

ASTM D2373-05

Standard Test Method for Determination of Cobalt in Paint Driers by EDTA Method

2

Color

ASTM D1544-04

Standard Test Method for Color of Transparent Liquids (Gardner Color Scale)

3

Nonvolatile Content

ASTM D1644-01

Standard Test Methods for Nonvolatile Content of Varnishes

4

Viscosity

ASTM D1200-10

Standard Test Method for Viscosity by Ford Cup

Chemical Formula