BOMCELL®MEC165(S) Methyl Hydroxyethyl Cellulose MHEC For Tile Adhesive and Cement-Based Renders

BOMCELL® MEC165(S) is a methyl hydroxyethyl cellulose (MHEC) developed by Henan Botai Chemical for cement-based systems requiring superior sag resistance, workability, and water retention. It is specially designed for tile adhesives, EIFS/ETICS mortars, joint fillers, and renders, ensuring light, creamy texture, stable consistency, and excellent adhesion performance even under hot or dry climatic conditions.

This grade combines balanced viscosity (~15,000 mPa·s) with smooth troweling and excellent water-holding capacity, resulting in enhanced durability, flexibility, and workability of dry-mix formulations.

Key Benefits:

Smooth Workability – Provides light and creamy texture for easy application.

Strong Sag Resistance – Prevents tile slippage and ensures stable vertical adhesion.

High Water Retention – Improves cement hydration and open time.

Stable Consistency – Maintains uniform viscosity under various climates.

Enhanced Surface Finish – Ensures a smoother, defect-free mortar surface.

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Product Advantages

  • Optimized for EIFS, tile adhesives, joint mortars, and cement renders.
  • Ensures excellent open time and trowelability for professional results.
  • Provides good cohesion and anti-sag properties in vertical applications.
  • Compatible with Portland cement, polymer powders (RDP), calcium formate, and retarders.
  • Offers stable performance in both hand-applied and machine-spray mortar systems.

Technical Specification

Chemical Basis:Methyl Hydroxyethyl Cellulose (MHEC)
Appearance:White powder
Viscosity:approx 15000mPa.s
PH:5.0-8.5
Particle size(through 80mesh):Min.90%
Moisture content:max.6.0%
Bulk density:200-500g/
*2 % solution; on wet basis; Brookfield ,7#20rpm , 20 °C.
These figures are only intended as a guide and should not be used in preparing specifications

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Product Applications

BOMCELL® MEC165(S) is suitable for various construction formulations, including:

Recommended Dosage:

0.3 – 0.6% by weight of total dry-mix materials.

Need custom formulations or comparative testing?

Contact BOTAI’s technical team for customized formulation support and performance consultation.

 Contact Botai R&D Team

Packaging & Delivery

  • Standard packaging: 25 kg net paper bags or on cIients’ requirement
  • Custom OEM packaging available upon request
  • Minimum Order Quantity (MOQ): 3 metric tons.
  • Typical lead time: 7–15 days after order confirmation
  • Trade terms: FOB / CIF / DDP under Incoterms® 2020

Storage and Shelf life

  • Store in a cool, dry, and well-ventilated place below 25°C.
  • Avoid direct sunlight and high humidity.
  • Shelf life: 24 months from production date when stored in unopened original packaging.

Safety & Compliance

BOMCELL® MEC165(S) is non-toxic, non-flammable, and environmentally safe.
It complies with ISO 9001, EU REACH, and HALAL quality standards.
Refer to the MSDS for detailed safety and handling instructions.

About Henan Botai Chemical Building Materials Co., Ltd.

Established in 2004, Botai Chemical is a certified manufacturer specializing in Redispersible Polymer Powder, Cellulose Ethers (HPMC/HEMC/HEC), Calcium Formate, and Superplasticizers (SMF/PCE). Our products are widely used in dry-mix mortars, paints, oil drilling, feed, and detergent applications.

As a member of China’s Building Materials and Ceramic Industry Associations, Botai is actively involved in R&D and innovation for tile adhesive and repair materials. We operate two advanced R&D centers and hold over 25 patents and 20 registered trademarks.

With ISO 9001, EU REACH, HALAL, and FAMI-QS certifications, Botai ensures consistent quality and sustainable manufacturing. Our annual capacity exceeds 100,000 tons across VINNATE®, VAMCELL®, BOMCELL®, THYLOCELL®, FORCA®, and DEMACSA® product lines.

Our Certificate

Customer Case

Why Choose Us?

Factory established in 2004, backed by 20+ years of manufacturing expertise and over 60,000 m² of modern production facilities

Trusted by customers in 100+ countries and regions, with stable export supply and responsive service

One of China’s leading manufacturers of construction chemical additives, with a total annual capacity exceeding 100,000 tons

Two advanced R&D centers with full in-house laboratories and patented formulation capabilities

Certified quality and production systems: ISO 9001, EU REACH, HALAL, FAMI-QS

25+ patented technologies and 20+ registered trademarks, including VINNATE®, VAMCELL®, BOMCELL®, THYLOCELL® and more

Dedicated QC management and global technical support teams ensuring fast response and reliable service

Strong supply stability with long-term raw material partnerships and automated production lines, ensuring consistent quality and on-time delivery

FAQ

What is the main purpose of MEC165(S)?

It is designed to improve sag resistance, workability, and adhesion in tile adhesives, EIFS, and renders.

How does MEC165(S) improve mortar quality?

It enhances open time, cohesion, and vertical stability while ensuring smooth workability.

Is MEC165(S) compatible with polymer powders (RDP)?

Yes, it is fully compatible with VINNATE® RDP, improving flexibility and adhesion strength.

What is the optimal dosage range?

Typically 0.3–0.6% of total dry-mix weight, depending on formulation.

How should MEC165(S) be stored?

In a cool, dry, and ventilated environment below 25°C to maintain stability.

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