Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Ashland Aqualon N50 Pharm Ethyl Cellulose

Ashland Aqualon N50 Pharm Ethyl Cellulose is a pharmaceutical-grade ethyl cellulose polymer with 48–49.5% ethoxyl substitution. Designed for controlled-release tablet coatings and sustained-delivery systems, it offers excellent film-forming ability, water insolubility, and regulatory compliance (USP/NF, EP, JP). Widely used in oral solid dosage forms requiring precise drug release profiles.
  • ashland aqualon n50 pharm ethyl cellulose_affd0419
  • ashland aqualon n50 pharm ethyl cellulose_affd0419

Features Of Ashland Aqualon N50 Pharm Ethyl Cellulose

  1. Pharmaceutical-grade ethyl cellulose meeting USP/NF and EP monograph requirements.

  2. Consistent batch-to-batch performance with strict control of substitution level and molecular weight distribution.

  3. Excellent film-forming capability for controlled-release and enteric-coating applications.

  4. High purity with low residual solvents and heavy metals, compliant with ICH Q3D guidelines.

  5. Free-flowing white to off-white powder with excellent dispersibility in organic solvents.

Typical Applications Of Ashland Aqualon N50 Pharm Ethyl Cellulose

  1. Sustained-release matrix tablets and granules.

  2. Enteric and functional film coatings for oral solid dosage forms.

  3. Microencapsulation and pellet coating in multiparticulate systems.

  4. Viscosity modifier in topical and ophthalmic formulations.

  5. Binder and release modifier in hot-melt extrusion (HME) processes.

Specifications Of Ashland Aqualon N50 Pharm Ethyl Cellulose

Chemical TypeEthyl cellulose polymer
Product FormFree-flowing powder
AppearanceWhite to off-white granular or powdered solid
Substitution Level (Ethoxy Content)48.0–49.5% w/w
Viscosity (2% w/v in toluene/ethanol 4:1)46–54 mPa·s
Heavy Metals (as Pb)≤ 10 ppm
Residual Solvents (Ethanol/Toluene)Complies with ICH Q3C Class 2 limits
Microbial LimitsMeets USP <71> requirements for non-sterile pharmaceutical excipients


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