WheChemical ST 300 is a modified hydroxypropyl starch specifically developed for cementitious and gypsum-based dry-mix formulations where controlled viscosity, improved workability, and enhanced rheological stability are required. As a non-ionic starch ether, ST 300 provides effective thickening and water-retention behavior while maintaining good flow characteristics and easy processing. ST 300 is designed for applications that require moderate viscosity build-up, good suspension stability, and cost-efficient rheology control. It disperses readily in water and contributes to smooth application, reduced segregation, and improved consistency of fresh mortars.
|
Parameter |
Specification |
|
Chemical type |
Modified hydroxypropyl starch |
|
Product form |
Free-flowing powder |
|
Appearance |
White to slightly yellowish powder |
|
Bulk density |
300–600 g/l |
|
Moisture content |
≤ 10 % |
|
pH value (5 % solution) |
7.0 – 10.0 |
|
Hydroxypropyl content |
16.0 – 22.0 % |
|
Viscosity (Brookfield, 5 % solution) |
approx. 200 – 500 mPa·s |
|
Solubility |
Readily soluble in water |
|
Ionic character |
Non-ionic |
|
Compatibility |
Cementitious and gypsum-based systems |
Provides moderate thickening and balanced rheology control for standard dry-mix formulations.
Supports smooth application and better handling during mixing and use.
Helps maintain formulation stability and improves consistency in fresh mortars.
Minimizes material separation and bleeding for more reliable application performance.
Offers an economical alternative for formulations requiring dependable viscosity adjustment.
Do you have any questions or comments about our products? Reach out to our sales team, always ready to help you.
wheChemical is an international supplier of cellulose derivatives and construction chemical additives, serving the global construction materials industry with reliable and performance-oriented solutions.
Our product portfolio includes WHECELL cellulose derivatives, WHEBOND redispersible polymer powders, and WHECHEM specialty additives, designed to enhance the performance of dry-mix mortars, tile adhesives, exterior insulation systems, and self-leveling compounds.
Working in close cooperation with established international manufacturing partners, wheChemical provides access to high-quality materials produced according to modern industrial standards. Our focus is to ensure reliable product availability, consistent quality, and formulation-oriented technical support for customers in the construction chemicals sector.
Whether you are formulating high-performance tile adhesives, developing self-leveling underlayments, or optimizing EIFS systems, wheChemical provides the chemical components needed to achieve reliable workability, water retention, adhesion strength, and long-term durability.
Contact our technical sales team to discuss your specific formulation requirements and request product samples.
