Amino acid gypsum retarder is a special admixture for gypsumbased materials with natural amino acids or synthetic amino acids as the core active ingredients. By specifically interacting with the hydration products of gypsum, it delays the setting and hardening rate of gypsum and can also improve the internal structure of gypsum products. It is suitable for various gypsum-based systems such as building gypsum, high-strength gypsum, and desulfurization gypsum. It is both environmentally friendly and highly efficient, and is widely used in the production of gypsum mortar, gypsum blocks, gypsum putty and other products
Physical Properties
Performance | Index |
Appearance | Light yellow or light gray powder |
moisture content% | ≤3 |
Fineness (residue on a 0.315mm square hole sieve/% | ≤5 |
Bulk Density/(g/L) | 700±100 |
Performance
mainly applied in gypsum-based products and can endow the products with the following characteristics
• It has a high retarding efficiency and a low dosage
• It has good alkali resistance and a good retarding effect in the gypsum + calcium hydroxide and gypsum + cement systems
• The dosage has a linear relationship with the setting time of gypsum
• The operable time is long
• Odorless, non-toxic and pollution-free
Application
mainly recommended for application in gypsum-based self-leveling mortar, plastering gypsum, jointing gypsum, gypsum components and gypsum decorative line mortar, etc.
The recommended dosage is 0.05 to 0.3% of the gypsum quantity. The actual dosage should be determined in advance through experiments
Storage
In the sealed original packaging , the storage period is 12 months. If it has exceeded the usage period but no lumps , it can still be used. It must be stored in a cool and dry place. To prevent moisture from seeping in, opened packages should be sealed as soon as possible.
Package
25 kg bag: Multi-layer paper
plastic composite bag (lined with polyethylene film)

