"R" grades (like 250 HHR or 250 MR) feature surface treatments to delay hydration, preventing lumping and ensuring lump-free dispersion during mixing.
It is resistant to biological degradation and offers high salt tolerance, which is critical for long-term shelf stability in products like toothpaste and industrial coatings. Natrosol 250™ hydroxyethylcellulose (HEC) - ChemPoint.com
Natrosol™ 250 is a high-performance polymer that serves as a versatile thickener, stabilizer, and rheology modifier across numerous industries . Derived from natural, renewable cellulose, it is widely utilized for its ability to create clear, smooth, and non-tacky solutions in both hot and cold water. Why Formulators Choose Natrosol 250
Being nonionic, it remains stable in high-salt environments and across a wide pH range (typically 4.0–10.0), making it ideal for everything from acidic cleaners to alkaline shampoos.
In personal care, it delivers a silky, non-stringy texture that improves the spreadability of serums, lotions, and conditioners.
