Ashland Natrosol 250HX PHARM is a fine-particle high-molecular-weight pharmaceutical excipient in the hydroxyethyl cellulose series, tailored for scenarios such as pharmaceutical solid preparations, cosmetics, personal care and food. As an off-white or beige odorless fine granular powder and non-ionic water-soluble polymer, it has excellent binding, controlled-release, thickening and stabilizing effects
High Viscosity & Efficient Thickening - Excellent thickening efficiency with high viscosity, strongly improve system consistency, balance suspension and stability
Cold Water Soluble & Easy Processing - Surface-treated powder, disperses in cold water without agglomeration, easy to add and improve production efficiency
Wide Range Stability & High Salt Resistance - Stable performance at pH2-12, resistant to high salt concentration, suitable for complex ionic water-based systems
Excellent Rheology Control - Pseudoplastic fluid characteristics, suitable for high-shear construction processes, good workability and anti-splashing
Architectural Coatings - Used in latex paints, interior and exterior wall putties to thicken and prevent sedimentation, improve the leveling and construction anti-splashing of coatings
Daily Chemical Products - Used in shampoos and body washes for high-viscosity thickening and foam stabilization, improve product texture and skin feel
Building Material Additives - Used in cement-based mortar and tile adhesive as water retaining agent and thickener, improve bonding strength and workability
Oilfield Chemistry - Used in drilling fluid as a viscosifier to improve sand carrying capacity and ensure the smooth progress of drilling construction
| Chemical Name | Hydroxyethyl Cellulose (HEC) |
| CAS No. | 9004-62-0 |
| Chemical Type | Nonionic Cellulose Ether |
| Appearance | White to off-white free-flowing powder |
| Viscosity (2% aqueous solution, 20°C) | 10000±1500 mPa·s |
| Molar Substitution (MS) | 2.5-3.0 |
| Effective pH Range | 2.0-12.0 |
| Moisture Content | ≤5% |
| Ash Content | ≤5% |
| Gel Temperature | ≈65°C |
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