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Gypsum Retarder

Leading manufacturer of Gypsum Retarder (CAS 68-04-2). Achieve precision setting time control for gypsum plaster and mortar with zero strength loss. Bulk supply & technical support for wholesalers. Get a quote!


  • CAS No.: 68-04-2(Sodium citrate)

  • Type: Chemical Agent 

  • Appearance: White To Off-White Powder Substance

  • HS Code: 3824999999

  • Model No.: GR-400

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Functions
Specification
Construction

Celix Gypsum Retarder Functions

Master the Setting Time of Your Gypsum Products

Excellent Retarding Effect

Effectively prolong the initial and final setting time of gypsum-based products, facilitating construction operations.

Improve Workability

Improve the fluidity and workability of mortar, making application and leveling smoother.

Improve Surface Quality

Prevent problems such as pulling, peeling, and uneven surface caused by rapid condensation.

Good Compatibility

It is stable when combined with various additives such as HPMC, starch ether, RDP, defoaming agent, etc., and does not affect the performance of the system.

Gypsum Retarder Specification

Celix Gypsum Retarder is designed to deliver precision control over gypsum setting time, allowing manufacturers to accurately adjust the working time from a few minutes to several hours. This flexibility makes it suitable for both manual plastering applications and machine-applied gypsum mortars, ensuring smooth construction and improved productivity. Unlike conventional additives, Celix retarder is formulated to provide minimal strength loss, maintaining the high mechanical strength of hardened gypsum products while extending workability. Produced with high purity and strict quality control, it ensures stable and consistent performance in every batch, helping manufacturers avoid costly production fluctuations. In addition, the product offers excellent compatibility with Celix HPMC, creating a synergistic system that enhances water retention, workability, and overall gypsum mortar performance without negative side effects. This makes Celix gypsum retarder a reliable solution for high-quality gypsum-based building materials.

SpecificationIndex
ExteriorLight yellow powder
Retarding timeMore than 100 minutes
Dosage1 - 3%
pH value7 - 9
Graininess80 mesh 100% pass


For the best performance in gypsum plasters, we recommend using our High Water Retention HPMC alongside this retarder to prevent premature drying.

Gypsum Retarder in Construction

Plaster and Render(Gypsum based)
Self-Leveling Compounds (Gypsum based)
Plaster and Render(Gypsum based)
Plaster and Render(Gypsum based)

Gypsum retarders are frequently incorporated into plaster to regulate its setting time—a parameter that can be tailored according to specific environmental conditions. Beyond controlling setting speed, these retarders also help reduce the risk of cracking, which typically arises when plaster dries too quickly. Additionally, they play a role in enhancing the adhesion of the plaster to its underlying substrate, ensuring a more secure bond.

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Self-Leveling Compounds (Gypsum based)
Self-Leveling Compounds (Gypsum based)

Gypsum retarder can reduce the risk of cracks or an uneven surface. Gypsum retarder improves the fluidity, making your mixture easier to achieve a level surface.Celix retarder gives installer more time to spread and level the compounds before it begins to set.

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FAQ About Gypsum Retarder

How can a gypsum retarder help manufacturers precisely control the setting time?

high-quality gypsum retarder allows manufacturers to accurately adjust the setting time of gypsum mortar from several minutes to several hours, depending on the formulation and dosage. This level of control is essential for different applications such as manual plastering, machine spraying, or large-area construction. With Celix Gypsum Retarder, producers can fine-tune the working time to match production speed and jobsite conditions, ensuring stable and predictable performance.


How to ensure consistent setting time control in large-scale gypsum mortar production?

Consistency is critical in industrial production. Variations in retarder purity or activity can cause unstable setting times and production losses. Celix Gypsum Retarder is produced with high purity and strict batch control, ensuring stable and repeatable performance. It also offers excellent compatibility with Celix HPMC, allowing manufacturers to build a reliable additive system that delivers consistent workability and setting control in every batch.


Will a gypsum retarder reduce the strength of gypsum mortar?

Low-quality retarders may significantly reduce the final strength of gypsum products, which can affect durability and product quality. Celix Gypsum Retarder is specially formulated to deliver extended working time with minimal strength loss, helping manufacturers maintain the mechanical strength and structural stability of gypsum plaster, gypsum mortar, and gypsum-based building materials.


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Celix Cellulose Co., Ltd, is an integrated chemical cellulose manufacturer with in-house R&D, factories, and global sales sites.


Our products include HPMC, HEC, MHEC, VAE RDP, PCE, PVA, Defoamers, PP fibers, HPS, SHP and Gypsum Retarder.

Celix Cellulose Co., Ltd, is an integrated chemical cellulose manufacturer with in-house R&D, factories, and global sales sites.


Our products include HPMC, HEC, MHEC, VAE RDP, PCE, PVA, Defoamers, PP fibers, HPS, SHP and Gypsum Retarder.

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  • +8618330106777
  • info@celixcellulose.com
  • Factory Address: XiuCun West, Jinzhou Economic Development Zone, Shijiazhuang City, Hebei Province, China.
  • HQ Office Address: 1806, Zhongheng Building, Chang'an district, Shijiazhuang, Hebei Province, China.
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