What is the difference between potassium polyacrylate and sodium polyacrylate?

What is the difference between potassium polyacrylate and sodium polyacrylate?

What is the difference between potassium polyacrylate and sodium polyacrylate?

Usages

potassium polyacrylate: water retaining agent for plants

sodium polyacrylate: absorbent material of diaper, sanitary napkins, etc.

Process of absorbing

potassium polyacrylate: white powder => transparent water gel

sodium polyacrylate: white powder => white water gel => transparent water gel

Decomposition time

potassium polyacrylate: more than two weeks

sodium polyacrylate: in one week

Decomposition product

potassium polyacrylate: K+, carbon dioxide, water, etc.

sodium polyacrylate: Na+, carbon dioxide, water, etc.

Price

potassium polyacrylate: high

sodium polyacrylate: low

Update

It’s unwise to use Sodium polyacrylate as water retaining agent. It’s no working and would cause salinization of soil.