Ashland Benecel HPMC 2208K Hydroxyethyl Cellulose

Features Of Ashland Benecel HPMC 2208K Hydroxyethyl Cellulose

1. Direct Compression Adaptation - Optimized particle morphology, excellent powder flow, direct tableting to reduce processes

2. Precise Sustained-Release Regulation - High-viscosity hydrophilic matrix feature, precisely regulating drug release rate for long-acting delivery

3. Strong Binding Enhancement - Excellent binding performance, improving tablet hardness and molding stability, ensuring content uniformity

4. Low Nitrite Advantage - Nitrite content below 200ppb, reducing potential impurity formation risk

Typical Applications Of Ashland Benecel HPMC 2208K Hydroxyethyl Cellulose

1. Direct Compression Tablet Preparation - Used for various oral direct compression tablets to improve tableting efficiency and product stability

2. Controlled-Release Matrix Formulations - Used as hydrophilic matrix material to prepare long-acting controlled-release tablets and granules

3. Tablet Binding & Granulation - Used as binder in tablet granulation process to ensure particle formation and flowability

4. Pharmaceutical Film Coating - Used as formulation film coating material to improve appearance and protection performance

Specifications Of Ashland Benecel HPMC 2208K Hydroxyethyl Cellulose

Ashland Benecel HPMC 2208K Hydroxyethyl Cellulose – Frequently Asked Questions (FAQ)

Q1: What is the primary functional role of Benecel HPMC 2208K in formulations?

A: Benecel HPMC 2208K functions primarily as a rheology modifier and thickener, providing viscosity enhancement, suspension stability, and improved film-forming characteristics in aqueous systems. Its hydroxypropyl and methyl substitutions contribute to balanced water solubility and thermal gelation behavior.

Q2: How does Benecel HPMC 2208K differ from standard hydroxyethyl cellulose (HEC) grades?

A: Unlike HEC, Benecel HPMC 2208K is a hydroxypropyl methylcellulose — not hydroxyethyl cellulose — and features both hydroxypropyl and methyl ether substitutions. This imparts distinct thermal gelation properties, improved surface activity, enhanced compatibility with surfactants and electrolytes, and greater resistance to enzymatic degradation compared to typical HEC derivatives.

Q3: Is Benecel HPMC 2208K suitable for use in personal care products requiring clear, non-irritating gels?

A: Yes, it is widely used in clear rinse-off and leave-on personal care formulations such as shampoos, body washes, and hand sanitizers. It delivers excellent clarity, low skin and eye irritation potential, and compatibility with common preservatives and mild surfactant systems when properly dispersed and hydrated.

Q4: What are key handling considerations during incorporation into aqueous systems?

A: To avoid agglomeration, Benecel HPMC 2208K should be gradually dispersed into cold water under high-shear mixing. Pre-blending with water-soluble solids (e.g., salts or sugars) or using a vortex mixer can aid uniform wetting. Hydration is typically complete within minutes at ambient temperature, though full viscosity development may require additional time depending on system pH and ionic strength.