01
EN 12004 C1/C2
Tile Adhesive Systems
Tile Adhesive C1 / C2
Excellent spreadability, adhesion, and open time for both standard and premium ceramic tile installations.
Formula Range
Landu Novastar™
Versatile High‑Performance Grade
Versatile High‑Performance Solution for Cement & Gypsum Systems
Key Features
High Viscosity Range
2000 – 5000 mPa·s
Dual‑System Compatibility
Cement & Gypsum systems
Multi‑Functional Performance
Across diverse applications
Professional‑Grade Consistency
Reliable quality & performance
Landu Novastar™
One Multi‑Functional HPS for
Cement‑Based & Gypsum‑Based
Building Systems
About ST2442
Landu Novastar™ ST2442 is a professional‑grade, multi‑functional construction additive engineered for use in both cement‑ and gypsum‑based formulations. With its high viscosity range (2000 – 5000 mPa·s) and optimized molecular design, ST2442 offers exceptional workability, anti‑sagging strength, and water retention across tile adhesives, machine spray mortars, and plastering systems.
Representing Landu's advanced starch ether engineering, ST2442 combines dual‑system compatibility with professional‑grade stability — making it the ideal choice for manufacturers seeking a single, efficient solution to simplify product portfolios and ensure consistent high quality.
Primary Applications
Landu Novastar™
Dual‑System Mortar Grade
Physical & Chemical Properties
Tested per standard laboratory conditions
| Property | Specification |
|---|---|
| 01 Appearance | White fine powder |
| 02 Viscosity (5% solution) | 2000 – 5000 mPa·s |
| 03 pH (1% solution) | 4.0 – 8.5 |
| 04 Loss on Ignition | ≤ 12 % |
| 05 Moisture Content | ≤ 10 % |
| 06 Particle Size | ≥ 98 % pass 100 mesh |
| 07 Bulk Density | 500 – 900 g/L |
| 08 CAS Number | 9049‑76‑7 |
Quality Standards
Certified & validated
Key Metrics at a Glance
2000–5000
mPa·s Viscosity
4.0–8.5
pH Range
≤ 10%
Moisture
≥ 98%
100 Mesh Pass
CAS Registry Number
9049‑76‑7
Performs equally well in gypsum and cement mortars across a wide pH range of 4 – 8.5.
Premium anti-sagging and rheology control for demanding vertical and overhead applications.
One HPS grade covers tile adhesives, plasters, and spray mortars — simplifying your formulation library.
Smooth spread and controlled flow reduce labor time on site.
Maintains hydration throughout the curing cycle for stronger, more consistent results.
Better tile placement window and superior surface finish quality.
Supports multiple formulations with a single stock SKU, reducing procurement complexity.
Landu Novastar™
Dosage, Mixing & Storage
Recommended Dosage
Percentage of total dry mix weight · 7 application types
Tile Adhesive
% of dry mix
Tile Adhesive
% of dry mix
Machine Spray Mortar
% of dry mix
Gypsum Plaster
% of dry mix
Cement Plaster
% of dry mix
Self‑Leveling Compound
% of dry mix
EIFS / ETICS Systems
% of dry mix
Mixing Instructions
Standard & high‑performance protocols
Blend dry powders
Mix ST2442 evenly with all dry components before adding water.
Add water gradually
Pour water slowly under continuous mechanical mixing.
Mix 3 – 5 minutes
Maintain continuous mixing until a homogeneous consistency is achieved.
Rest 5 – 10 minutes
Allow the mix to stand undisturbed for full hydration of the starch ether.
Re‑mix Briefly
Final StepA short final mix restores full workability before application. The starch ether has now fully hydrated — this step activates its thickening and anti‑sagging performance.
Storage & Handling
Conditions for optimal shelf life
5 – 35 °C
Storage Temperature
Dry & Ventilated
Environment
Avoid Sunlight
Light Exposure
12 Months
Shelf Life (sealed)
Keep bags tightly sealed. Avoid moisture exposure — contact with water before use will cause premature hydration and reduce product performance.
Landu Novastar™
Across Cement & Gypsum Mortars — Five Proven System Categories
Excellent spreadability, adhesion, and open time for both standard and premium ceramic tile installations.
Reliable pumpability and anti-sagging for mechanized application systems on large-scale projects.
Improves workability, cohesion, and surface smoothness for both binder types in a single grade.
Controlled viscosity for smooth flow and minimized shrinkage across floor leveling applications.
Balances flexibility and adhesion for base coats and bonding layers in external insulation systems.
Hydroxypropyl Starch Ether · Full Product Line Comparison
Grade Comparison Matrix
5 grades · Viscosity · Ash · Compatibility · Application
| Product | Viscosity (mPa·s) | Ash (%) | System | Best For |
|---|---|---|---|---|
|
ST2442 Featured |
2000 – 5000
|
≤ 12 % |
Cement + Gypsum
|
Multi‑Functional High Performance |
|
ST2109 |
1000 – 5000
|
≤ 10 % |
Cement + Gypsum
|
Machine Spray Specialist |
|
ST1703A |
1500 – 4000
|
≤ 10 % |
Cement + Gypsum
|
Workability Enhanced |
|
ST3411A |
100 – 1000
|
≤ 8 % |
Cement Only
|
C2 Tile Adhesive Premium |
|
ST1506A |
500 – 3500
|
≤ 12 % |
Cement + Gypsum
|
Universal Grade |
Why Choose ST2442
Four reasons it stands apart from the grade matrix
Dual‑System Versatility
One additive covering both gypsum and cement formulations — no need to stock separate grades.
Superior Viscosity & Anti‑Sag
High viscosity range of 2000 – 5000 mPa·s delivers outstanding anti‑sagging efficiency across demanding applications.
Simplified Inventory
Consolidate your additive portfolio. ST2442 replaces multiple single‑system grades, reducing procurement complexity.
Professional Grade, Cost‑Optimized
Achieve professional‑grade performance while optimizing total formulation cost through efficient dosage and dual‑system coverage.
Hydroxypropyl Starch Ether · Application-specific guidance
Tile Adhesives
Combine with RDP and cellulose ether to meet EN 12004 C1/C2 standards.
Machine Spray Mortars
Adjust ST2442 to 0.25 – 0.35 % to balance thixotropy and spray pattern.
Gypsum / Cement Plasters
Improve durability and surface finish with ST2442 at 0.20 – 0.30 %.
EIFS & Self‑Leveling
Enhance adhesion and flow by combining with RDP (2 – 4 %) and cellulose ethers.
Synergistic Additives
ST2442 + HPMC + RDP ensures balanced workability, open time and adhesion across all systems.
Landu Novastar ST2442 · ISO & EN certified
Advanced Technology
Advanced modification and etherification technology for consistent product quality.
Automated QC
Automated quality control for viscosity, pH and dual‑system stability at every batch.
Comprehensive Application Tests
Full application testing for tile adhesive and machine spray mortar systems.
ISO & EN Certified
ISO 9001 / ISO 14001 certified manufacturing and EN 12004 compliance ready.
One hydroxypropyl starch ether grade. Multiple applications covered. Fewer SKUs, leaner operations, stronger margins.
Single SKU serves multiple applications — reduce warehouse footprint and procurement complexity in one move.
Consolidated volume purchasing unlocks better unit pricing and reduces total procurement overhead.
Consistent quality across batches simplifies quality control and formulation management.
Fewer raw material switches mean faster production changeovers and higher operational efficiency.
Our R&D and Application Engineering teams specialize in formulation development across tile adhesives, self-leveling mortars, EIFS, and machine spray plasters — delivering solutions tailored to your exact system requirements.
Hydroxypropyl Starch Ether · 11 questions answered
ST2442 is specifically engineered to perform excellently across diverse applications including tile adhesives (C1/C2), machine spray mortars, gypsum and cement plastering, self-leveling compounds, and EIFS systems. Its optimized viscosity range (2000 – 5000 mPa·s) and dual-system compatibility make it suitable for both cement-based and gypsum-based formulations.
Yes. ST2442 is designed to provide professional-grade performance across multiple applications. Many manufacturers successfully use ST2442 as their primary starch ether across their entire product portfolio, simplifying inventory while maintaining quality standards.
The exact dosage depends on your specific formulation and target performance. Contact our technical team for customized recommendations.
Yes. ST2442 performs excellently in machine spray applications with dosage typically 0.25 – 0.35 %. Its high viscosity range and thixotropic properties provide good pumpability and superior anti-sagging performance.
Yes. ST2442's pH range (4.0 – 8.5) and molecular structure provide excellent compatibility with both cement-based (alkaline) and gypsum-based (weak alkaline) systems.
No. ST2442 is engineered to deliver professional-grade performance across all its target applications. Proper formulation optimization ensures each application meets or exceeds performance requirements.
Yes. Our technical team provides comprehensive formulation support across all ST2442 applications including tile adhesives, machine spray mortars, plastering systems, and specialty mortars.
Contact our technical team to discuss your specific situation.
12 Months
from production date · original unopened packaging · dry, well-ventilated storage
Each grade is engineered for a distinct performance profile — find the one that fits your system.
View All Novastar HPS ProductsLet Landu help you streamline product lines, reduce costs, and enhance performance with our multi-functional ST2442 Hydroxypropyl Starch Ether — one grade, five proven systems.
