Gypsum Retarder SG-52

Prodcuct Overview

Description: SG-52 is a modified amino acid powder retarder for gypsum mortar.

Performance: Strong retarding effect, low dosage can give the required setting time to gypsum mortar, little impact on the final strength of gypsum-based mortar, setting time changes steadily and linearly with increasing dosage, and good compatibility with different types of calcium sulfate cementitious materials.

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What is Gypsum Retarder?

Gypsum Retarder is a specialized admixture designed to control the setting time of gypsum-based products. By moderating the hydration process of calcium sulfate hemihydrate, it ensures a more manageable working time without compromising the final strength or durability of the material.

The use of Gypsum Retarder provides key benefits: extended open time, improved workability, and greater flexibility in applications ranging from plaster and joint compounds to gypsum boards and decorative elements. It helps avoid premature setting, reduces waste, and allows for smoother finishing and shaping.

For projects requiring precise application, complex molds, or large-scale plastering, Gypsum Retarder ensures reliable performance, consistent quality, and enhanced construction efficiency—making it an indispensable additive in gypsum-based systems.

Advantages

The setting time changes linearly with the dosage relatively slowly, and the addition of alkaline substances has little effect on the retarding performance.

Technical Data

Appearance	White to light yellow powder
Bulk density	338g/cm³
Moisture content	≤0.84%
pH value of 20% solution	8.5
Recommended dosage	0.02-0.2%

Applications

Gypsum plaster, gypsum self-leveling, etc. gypsum mortar.

Gypsum Plaster
Gypsum Plaster
Gypsum-Based Self-Leveling

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Factory Strength

Advanced Distributed Control System
R&D Center
Modern Production Facilities
Shandong Plant
Suzhou Plant
Automated Production