Cellulose Ether for Dishwashing Liquid HEC solutions for viscosity control, smooth texture, stable pouring behavior, and storage stability in hand dishwashing liquid and dish soap formulations.

HEC (Hydroxyethyl Cellulose) is the most commonly used cellulose ether in dishwashing liquid. It is used for viscosity control, thickening, smooth texture, and formulation stability. CMC and HPMC may be considered in selected customized or specialty dishwashing systems where specific suspension, rheology, or gel-type performance is required.

HEC improves viscosity, builds product body, creates a smooth liquid texture, supports stable pouring behavior, and helps maintain suspension of opacifiers and pearlizing agents. As a non-ionic polymer, HEC is compatible with a broad range of surfactant systems used in hand dishwashing liquid formulations.

Cellulose ether primarily supports viscosity, texture, suspension stability, and formulation consistency. Cleaning power — including grease removal and soil lifting — depends on the surfactant system, grease-cutting ingredients, water quality, temperature, and washing conditions. Cellulose ether contributes to the user experience and product stability rather than directly to cleaning chemistry.

HEC primarily affects rheology and viscosity rather than foam generation. Foam performance depends on the surfactant system, foam boosters, and co-surfactant selection. However, the rheology profile should be designed to be compatible with foam behavior during consumer use. Compatibility and consumer-use testing are recommended to confirm the overall product experience.

A common reference dosage range is 0.1%–1.2% by weight, depending on product format, viscosity target, surfactant system, salt level, and cellulose ether grade. Hand dishwashing liquid typically uses 0.2%–0.8%, while gel-type dish soaps may require up to 1.2%. Final dosage must be confirmed through viscosity testing and stability evaluation.

Yes, selected cellulose ether grades — particularly HEC — may be used in clear dishwashing liquid systems. However, final clarity depends on the complete formulation system, including surfactant type and concentration, salt level, hydrotropes, solvents, fragrance, polymer grade, and processing conditions. Clarity testing under relevant conditions is recommended.

Viscosity loss during storage may be caused by surfactant incompatibility, elevated salt or electrolyte levels, pH changes over time, temperature fluctuations, fragrance or preservative interactions, poor initial cellulose ether hydration, or use of an unsuitable grade. Systematic storage stability testing under relevant temperature conditions is recommended to identify the root cause.

Lumps or fish eyes typically occur when cellulose ether powder is added too quickly to water, is poorly dispersed before hydration begins, or is not given sufficient hydration time with adequate agitation. The addition method and mixing sequence should be optimized — pre-dispersing the cellulose ether or adding it slowly under agitation before other ingredients can help prevent lump formation.

Start by defining your surfactant system, viscosity target, salt curve, pH range, clarity target, active matter level, fragrance system, storage requirements, and production process. Then contact LANDERCOLL with these parameters — our technical team can recommend suitable HEC, CMC, or selected cellulose ether grades and provide samples for formulation testing.