natrosol™ hec

chemistry: cellulosics

INCI/chemical name: hydroxyethylcellulose

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Natrosol™ hydroxyethylcellulose (hec), a nonionic, water-soluble polymer, is a white, free-flowing granular powder. It is made by reacting ethylene oxide with alkali-cellulose under rigidly controlled conditions. Purified hec for personal care and cosmetic applications is typically sold at 95.0 percent minimum purity (dry basis).

Natrosol™ hec is easily dissolved in cold or hot water to give crystal-clear, shear-thinning solutions of varying viscosity. Furthermore, low to medium molecular weight types are fully soluble in glycerol and have good solubility in hydro-alcoholic systems containing up to 60 percent ethanol. Natrosol™ hec is generally insoluble in organic solvents.

oral care features and benefits:

  • offers excellent tolerance to mono-, di-, and tri-valent cations
  • provides rheology properties such as shear-thinning for ease of filling tubes during manufacture and dispensing onto toothbrush
  • imparts glossy, smooth ribbon appearance
  • inhibits syneresis formation
  • is nonionic resulting in compatibility with wide range of actives

oral care applications:

  • toothpastes
  • mouthwashes
  • mouth moisturizers
  • mouth sprays and gels

oral care grades:

Selecting the natrosol™ grade for your oral care formulation will depend on the desired properties of the final formulation. Many grades are available, and our solvers can help you select the optimum grade. Good starting points are natrosol™ 250 m pharm hec and natrosol™ 250 h pharm hec.


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