Control the Setting. Achieve Better Performance.
CONSTRUCTION CHEMICALS
Gypsum Retarder
MIKEM Gypsum Retarder helps control setting time and extend the working time of gypsum-based formulations, supporting easier mixing, application, leveling, and finishing.
ABOUT MIKEM
Gypsum Retarder Manufacturer
MIKEM is a professional manufacturer of construction chemicals, providing high-quality gypsum retarder with stable performance, strict quality control and reliable supply.
We support customized formulations and technical service to meet different project requirements.
Product Details
| Item | Specification |
| Appearance | Free-flowing white or yellowish powder |
| Bulk Density | 600 – 1000 g/L |
| Moisture Content | ≤ 3% |
| pH Value (10% solution) | 7.0 – 9.0 |
| Solubility | Easily soluble in water |
| OEM Service | Available |
| Free Samples | Available |
| Package | 25 kg/bag, customized packaging available |
HOW IT WORKS
A Longer Working Time With Better Control
Gypsum retarders help control the hydration and crystallization processes of gypsum-based binders, delaying setting and extending the available working time. The specific mechanism and retarding efficiency depend on the chemical composition of the retarder, gypsum type, dosage, and formulation conditions.
01
Initial Mixing
(Gypsum slurry)
02
Retarded Crystallization
(Extended setting time)
03
Controlled Growth
(Forming strong structure)
04
Final Structure
(Higher quality finish)
KEY BENEFITS
More Flexibility for Gypsum Applications
MIKEM Gypsum Retarder helps extend working time and improve application control in gypsum-based systems. When properly selected and dosed, it allows more time for mixing, spreading, and finishing while supporting consistent setting behavior. Performance should be verified according to gypsum type, formulation, and application requirements.
APPLICATIONS
Versatile Use in Gypsum-Based Systems
MIKEM gypsum retarder is widely used in different gypsum products, helping to improve workability, extend setting time and achieve better construction performance.
Gypsum Plaster
Longer open time for easier application and better finish.
Gypsum-Based Self-Leveling
Extended setting time for smoother leveling and improved efficiency.
Gypsum Putty / Joint Compound
Better workability and a more uniform, fine surface.
Gypsum Boards & Prefabricated Products
Helps control setting time in production and improves demolding performance.
APPLICATION COMPARISON
See the Difference in Workability
Without Retarder
With MIKEM Retarder
TECHNICAL SUPPORT
From Formulation to Application
We provide technical support on formulation adjustment, dosage recommendation and application testing to help you achieve the desired setting time and performance in your specific gypsum system.
WHY CHOOSE MIKEM
Built on Manufacturing, Quality and Service
Manufacturing Capability
Modern production facilities and stable supply capacity.
Strict Quality Control
Comprehensive testing and quality assurance system.
Reliable Supply
Consistent quality and on-time delivery.
Technical Support
Professional team for formulation and application assistance.
Frequently Asked Questions
A gypsum retarder is an additive used to slow the setting time of gypsum-based materials. It provides a longer working time for mixing, spreading, leveling, and finishing while helping improve application control.
Gypsum retarder can be used in gypsum plaster, gypsum putty, gypsum-based self-leveling compounds, joint compounds, prefabricated gypsum products, and other gypsum-based dry-mix formulations.
Gypsum retarder delays the hydration and hardening process of gypsum, extending the workable period before the material begins to set. The final setting time depends on the retarder dosage, gypsum type, formulation, temperature, and other additives.
The appropriate dosage varies according to the gypsum formulation and required setting time. A small adjustment can significantly influence working time, so laboratory testing is recommended before determining the final dosage for production.
When the correct grade and dosage are used, gypsum retarder can extend setting time while maintaining good strength and stability. Excessive dosage, however, may affect setting behavior and final performance, so proper formulation testing is important.
Yes. Gypsum retarder can be formulated together with additives such as cellulose ethers, redispersible polymer powder, starch ether, defoamers, and other dry-mix additives. Compatibility should be evaluated according to the complete formulation.
Yes. Different gypsum applications may require different working times. MIKEM can provide product selection and formulation support based on your gypsum type, target setting time, application method, and performance requirements.
Yes. In gypsum-based self-leveling systems, a retarder helps provide sufficient flow and working time, allowing the material to spread and level properly before setting.
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