Sodium alginate is the sodium salt of alginic acid. Its empirical formula is NaC₆H₇O₆ .
Sodium alginate is a gum, extracted from the cell walls of brown algae.
Potassiumalginate is a chemical compound that is the potassium salt of alginic acid.
It is an extract of seaweed.

Sodium alginate in paints :

When sodium alginate is added to paint or dye, it increases the thickness of either substance.
This is useful when trying to adjust the consistency of a product without changing its color

Types:

• Sodium 401 (viscosity 500 cps)
• LN (viscosity 1000cps)
• Potassium alginate