CG-C 305 is a thickening and stabilizing agent in the form of a ready-to-use fluid inverse emulsion, and is equivalent to Sepigel 305. It has emulsifying properties with oil phases, providing a soft and unctuous gel-cream texture. CG-C 305 thickens extreme media (highly acidic, highly alkaline, or oxidizing) and stabilizes mineral additives. CG-C 305 is a ready-to-use liquid form. The polymer swells immediately in water at room temperature without any neutralization. It is a thickening agent for aqueous based formulations.