Hydroxyethyl cellulose

Hydroxyethyl cellulose (CAS 9004-62-0), commercially known as Natrosol or HEC, is a water-soluble polymer derived from cellulose used primarily as a thickener and rheology modifier across industrial and consumer formulations. It builds viscosity in aqueous systems without requiring heat activation, making it a practical choice for formulators working across multiple end-use sectors. In architectural and industrial coatings, HEC controls sag resistance.

It improves brush drag, directly affecting application quality and shelf stability. Construction product manufacturers use it in tile adhesives, cement renders, and joint compounds to extend open time and improve workability. Personal care formulators rely on it to thicken shampoos, lotions, and topical gels, where it also contributes moisture retention to the finished product. In pharmaceutical manufacturing, Cellosize-grade material is used.

It is utilized in ophthalmic solutions and tablet coatings where consistent viscosity and purity are critical to product performance. Hydroxyethyl cellulose is supplied as a free-flowing white to off-white powder. Grades are available across a broad viscosity range, including low, medium, and high, to suit different formulation requirements. Recognized specifications include USP, Ph.Eur., and technical grades.

Food-contact and cosmetic-compliant variants are also available from established producers. These materials meet rigorous industry benchmarks for consistency and performance in diverse chemical applications.