High viscosity polyanionic cellulose (PAC) is often used in powder form. Powdered PAC needs to be mixed with water or other solvents to prepare a solution before use to obtain the required concentration and viscosity.

Emulsion PAC is generally suitable for applications with low viscosity requirements, such as certain coatings and adhesives. Emulsion-based PACs are already water-based dispersions, making them easier to apply in these specific applications.

Therefore, if you need high viscosity PAC, you often need to choose powdered PAC and prepare a solution with an appropriate solvent when using it.