A cellulose ether with a hydroxyethyl functional group substitution. Hydroxyethyl cellulose (HEC) is a nonionic thermoplastic polymer that is soluble in water as well as many organic solvents. It is a white granular solid that is used as an emulsifier, stabilizer, thickener, and film former in many types of solutions such as foods, cosmetics, paints, and glazes. It is also used as a sizing agent and consolidant. Hydroxyethyl cellulose discolors and becomes insoluble with thermal aging (Feller and Wilt 1990).
Synonyms and Related Terms
HEC; hydroxyethylcellulose; hidroxietilcelulosa (Esp.); hidroxietilcelulose (Port.)
Examples: Natrosol® [Aqualon]; Cellosize® [Dow]; Tylose® H [SE Tylose]
Soluble in water, ethylene glycol. Insoluble in ethyl ether. pH = 6.5-8.5. Softening point = 135-140C.
R.Feller, M.Wilt, Evaluation of Cellulose Ethers for Conservation, in Research in Conservation Series, Getty Conservation Institute, 1990.
Sources Checked for Data in Record
- Book and Paper Group, Paper Conservation Catalog, AIC, 1984, 1989