It is a blend of slightly alkaline titanium/ oxidizing compounds.Activates steel surfaces and accelerates formulation of zinc-phosphate coating. Also accelerates the phosphate coating formulation process.
Comparison Between Acidic and alkaline Activation:
Sr No.
Items
Acidic Activation
Alkaline Activation
1.
Chemical Compostion
Oxalic acid based
Titanium based
2.
Toxicity
High
Very low
3.
Phosphate crystal size
>30 m
>10 m
4.
Coating Appearance
Uneven and patchy
Compact and uniform
5.
Tank and Pipe (lining)
Forms yellow-brown deposit which are easy to remove