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Modified Hydroxyethyl Methyl Cellulose (HEMC) – Premium Thickening & Water Retention Agent

The Modified Hydroxyethyl Methyl Cellulose-Celix Pro Series

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Modified HEMC
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More Cellulose Ethers

Celix Pro Series - Modified HEMC Sepcially for Those Appliactions

Celix Pro Series - Modified HEMC Sepcially for Those Appliactions

Modified Hydroxyethyl Methyl Cellulose, with the appearance of a white to off-white powder substance.


  • Grade: Celix Pro Series

  • CAS No.: 9004-65-3

  • Type: Chemical Auxiliary Agent

  • HS Code: 39123900

  • Viscosity Range: 400-75,000m Pa.s (Brookfield,2% water solution)

Celix Modified HEMC Model List:


* For Tile AdhesiveEM-Pro-AS, EM-Pro-AST

* For Wall Putty: EM-Pro-WP40U, EM-Pro-WP55U

* For Gypsum-Based PlasterEM-Pro-GP40U, EM-Pro-GP55U

* For EIFS/ETICS: EM-Pro-E40U, EM-Pro-E55U

For Latex Painting:  EM-Pro-E55U



For Tile Adhesive: EM-Pro-AS, EM-Pro-AST

Designed for high-performance tile adhesives, these models provide:

  • Excellent tensile strength for strong bonding

  • Superior anti-sagging and anti-slipping 
    properties for vertical applications

  • Optimized extended open time for better
    workability

  • Outstanding suspension ability to ensure uniform
    formulation

For Wall Putty: EM-Pro-WP40U, EM-Pro-WP55U
Engineered for smooth finishing and easy application:

  • Balanced tensile strength for surface durability

  • Good anti-sagging for improved leveling

  • Enhanced workability and suspension for
    a smooth, lump-free finish

  • Stable performance for both hand and
    machine applications

For Gypsum-Based Plaster: EM-Pro-GP40U, EM-Pro-GP55U
Tailored for gypsum systems with:

  • Reliable tensile strength to improve
    cohesion

  • Controlled anti-sagging for thick-layer
    application

  • Proper open time extension for better
    finishing

  • Strong suspension capacity to maintain
    consistency

For EIFS / ETICS: EM-Pro-E40U, EM-Pro-E55U

Ideal for external insulation systems requiring durability and flexibility:

  • High tensile strength for system integrity

  • Excellent anti-sagging in base coat applications

  • Enhanced anti-slipping for secure installation

  • Extended open time for large-area applications

  • Superior suspension for stable and uniform mixes


For Latex Painting: EM-Pro-E55U

  • Excellent suspension to prevent pigment settling and ensure uniform color distribution

  • Optimized viscosity control for smooth brushing, rolling, and spraying

  • Good anti-sagging performance to avoid dripping on vertical surfaces

  • Enhanced workability for easy application and leveling

  • Improved open time for better film formation and touch-up performance

 With Celix Modified HEMC, you can precisely match the right model to your formulation needs—ensuring consistent quality, improved efficiency, and better end-user performance. Contact us for samples, technical support, and customized solutions!


Modified HEMC Buyer's Guide & FAQs

What is the difference between HEMC and modified HEMC?

HEMC is a standard cellulose ether providing thickening, water retention, and stability. Modified HEMC is further surface-treated or chemically adjusted to enhance specific properties such as delayed solubility, improved workability, or better performance in demanding conditions like high temperatures, large-scale mixing, or extended open times.

What is modified HEMC?

Modified HEMC is hydroxyethyl methyl cellulose that undergoes additional processing, such as surface treatment, to improve application performance. This modification enables controlled hydration, easier dispersion in dry-mix systems, and optimized performance in modern construction materials, detergents, and other industries requiring stable and high-performing additives.

What are the functions of modified HEMC?

Modified HEMC improves water retention, workability, and open time in construction mortars and tile adhesives. Its surface treatment allows uniform dispersion, reduced lumping, and enhanced compatibility with other additives, ensuring consistent mixing and reliable performance in diverse construction environments and climate conditions.

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Partner with Celix for Superior Cellulose Ether Solutions!

Celix Cellulose Co., Ltd, is an integrated chemical cellulose manufacturer with in-house R&D, factories, and global sales sites.


Our products include HPMC, HEC, MHEC, VAE RDP, PCE, PVA, Defoamers, PP fibers, HPS, SHP and Gypsum Retarder.

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