Ethyl methyl cellulose

Ethyl methyl cellulose (CAS 9004-59-5), also known by the food additive designation E465, is a mixed cellulose ether produced by introducing both ethyl and methyl substituents onto the cellulose backbone.

It functions as a rheology modifier, emulsifier, and water-retention agent across food, pharmaceutical, and industrial applications. In food manufacturing, E465 stabilizes emulsions and controls texture in processed products.

This material is essential where consistent viscosity under heat is required. Pharmaceutical tablet and coating formulations use it as a film-former and binder, contributing to controlled release and coating integrity.

In construction mortars and tile adhesives, it improves workability and water retention, extending open time for application. Coatings and textile finishing formulations rely on it to adjust flow behavior and improve substrate adhesion.

Ethyl methyl cellulose is supplied as a white to off-white powder in varying viscosity grades. Higher-viscosity grades are suited to construction and industrial applications, while lower-viscosity grades are preferred in food processing.

Food-grade material is available to E465 specification, while pharmaceutical-grade supply meets USP and Ph. Eur. standards. This ensures compliance with international safety and quality requirements for sensitive applications.

Packaging is typically in multi-wall bags or fiber drums, with bulk quantities available for industrial procurement. Proper storage in a cool, dry environment is recommended to maintain the chemical stability of the product.