A hydroxyethylcellulose HEC, chemical name: hydroxyethyl cellulose (HEC) structural formula: Second, the technical requirements: molar degree of substitution (MS) 1.8-2.0 Moisture (%) ≤10 Water insoluble (%) ≤0.5 PH value of 6.0-8.5 Heavy Metal (ug / g) ≤20 Ash (%) ≤5 viscosity (mpa.s) 2% 20 ℃ solution 5-60000 Lead (%) ≤0.001 three traits: white or slightly yellow odorless free-flowing powder, 40 mesh sieve rate ≥99%; softening temperature: 135-140 ℃; Apparent density: 0.35-0.61g / ml; Decomposition temperature: 205-210 ℃; slow burning; balance comprising Wen amount: 23 ℃; when 50% rh 6%, 84% when rh 29%. Both soluble in water soluble in cold water, generally insoluble in most organic solvents. PH value of the viscosity in the range of 2-12 smaller, but more than this range, the viscosity decreased. Fourth, important properties: Hydroxyethyl cellulose as a non-ionic surfactant, in addition to a thickening, suspending, adhesive, emulsified, film, dispersion, water and provide protective colloid action, but also has the following Properties: 1, HEO soluble in hot or cold water, hot or boiling does not precipitate, it has a wide range of solubility and viscosity characteristics, and non-thermal gelation; 2, itself a non-ionic with a wide range of Other water-soluble polymers, surfactants, salt coexistence, is an excellent colloid thickener containing a high concentration of the electrolyte; 3, water retention capacity than methyl cellulose doubled, with better regulation of the flow , 4, HEC recognized the dispersion capacity compared with methyl cellulose and hydroxypropyl methyl cellulose dispersion capacity worst, but the strongest protective colloid. Five, and the solution preparation method, a predetermined amount was added to the vessel clean water; 2, was added under stirring at low speed hydroxyethyl cellulose, hydroxyethyl cellulose with stirring until all the mixture was stirred until all the material is completely soaked; 3, hydroxyethyl cellulose and stir until completely dissolved after all the other ingredients, stir together the recipe can be. VI, packaging: paper bag lined with polyethylene bag packaging, 25kg / bag, avoid moisture. Seven Uses: commonly used as a thickening agent, protective agent, binders, stabilizers, and the preparation of an emulsion, gel, ointment, lotion, eye clear, suppositories and tablets additive, also used as a hydrophilic gel , frame materials, making the framework sustained-release formulations, can also be used as a stabilizer effect foods.